Rolling farmland and mixed hardwood west of Richmond with red clay soil and a wooded creek bottom.
Hanover County One statewide code, no local amendments

Barndominium Builders in Hanover County, VA

Hanover is Richmond's north side and the most conventional good answer in the metro: 91,864 acres in farms, 30.7 percent of the county, and a median farm of 38 acres, which is the deepest supply of working land in the Richmond ring. Past Mechanicsville it turns genuinely rural, and the A-1 Agricultural district asks for ten acres to put a new house on. Two things here are worth more than the acreage. Hanover publishes its own filled-in Table R301.2, which not every locality does, and it has also issued a formal building-official policy about a printed error in the 2021 Virginia Construction Code's snow figures, which almost nobody covers. The county then adds a shrink-swell soils policy of its own that reaches any detached light-frame building over 600 square feet, and a grading rule that puts an engineer or a land surveyor on every residential permit before it issues.

Hanover County at a glance

County
Hanover County
Population
116,423
ZIP codes
23005, 23015, 23047, 23059, 23069, 23111, 23116, 23146, 23192
Site visits
Same week for most of the county
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Building conditions in Hanover County

The building code itself is the same in every Virginia locality, and no county, city or town may amend it. What changes from one to the next is who issues the permit and inspects the work, what that office charges, how the parcel is zoned, and the Table R301.2 design criteria the locality publishes — the 2021 Virginia Residential Code prints that table blank, with the instruction that additional criteria shall be established by the local jurisdiction. Those local numbers are what your drawings have to satisfy.

Build conditions for Hanover County , Virginia : design wind speed 115 mph. BUILD CONDITIONS HANOVER COUNTY, VAHanover CountyONE STATEWIDE CODEDESIGN WIND SPEED115 mphHanover's own published figure, as ultimate design wind speed: the county's Residential Climateand Geographic Data sheet prints V_ult = 115 mph, with topographic effects No, special wind regio…ZONING · A-1 (AGRICULTURAL), AR-6 (AGRICULTUR…10 acres in A-1A-1 asks 10 acres for a new single-family dwelling in a subdivision,with lot width and front yard set by the right-of-way you front: 45…WHO ISSUES THE PERMITHanover County Building InspectionsEstablished 1962 and now over 20 code enforcement professionals, at7516 County Complex Road. Applications go through the eTRAKiT porta…
Build conditions for Hanover County, drawn from the sourced facts on this page. Every figure above is cited in the quick-facts panel below, with its source and vintage.
A snow-load error the county wrote a policy about
Hanover has issued a formal document, 2021 VCC Provisions of ASCE 7, saying the ground snow figures printed in the 2021 Virginia Construction Code are the ASCE 7-16 maps while the state intended ASCE 7-22 throughout. In the county's own words the printed figures "do not reflect the updated snow load maps in ASCE 7-22 and result in underestimations (e.g. ground snow loads 25psf lower when applying ASCE 7-22 load combinations with the snow reduction factor)", and "if the snow loads are determined based on Figures 1608.2(1) and 1608.2(2), the structure may be unsafe." The rule it sets is that a design must sit entirely in one edition: "Designers are not permitted to mix provisions from ASCE 7-16 and ASCE 7-22 in the same project." Hanover is one of three Virginia building departments known to have published formal guidance on this, alongside Prince William, whose version is effective 16 December 2024, and Fairfax. On a wide-span metal roof this is the question to ask a supplier before anything is fabricated: which snow map, and which edition, all the way through.

Hanover County, 2021 VCC Provisions of ASCE 7, hanovercounty.gov/DocumentCenter/View/14904; Prince William County, Ground Snow Load policy effective 16 Dec 2024, pwcva.gov/assets/2024-12/GroundSnowLoad.pdf

Table R301.2, filled in by the county
The 2021 Virginia Residential Code prints Table R301.2 with em-dashes and says the local jurisdiction sets the figures, and Hanover publishes its own: ground snow load 20 psf, ultimate design wind speed 115 mph, topographic effects No, special wind region No, windborne debris zone No, weathering Severe, frost line depth 18 inches, termite Severe, ice barrier underlayment required Yes, air freezing index 228, mean annual temperature 57.7 degrees. Two of those stand out. The termite rating is Severe where most Virginia localities publish Moderate to Heavy, which matters on a building that is mostly slab edge. And the county publishes no seismic design category at all, which is a real answer rather than a missing one. Note also that the printed 20 psf sits alongside the county's own ASCE 7 policy about which snow map the code's figures came from.

Hanover County Building Inspections, Residential Climate and Geographic Data, hanovercounty.gov/DocumentCenter/View/10671, linked from the department's Helpful Links page at hanovercounty.gov/1324

A soils rule that catches the shop at 600 square feet
Hanover's Shrink-Swell Soils Policy, effective 23 June 2023, applies to all new single-family dwellings, all attached additions, sunrooms and screened porches, and "all detached light frame structures exceeding 600 square feet in area." The Building Inspector's Office does the screening itself, locating the property on the soils map in the Soil Survey of Hanover County, and "any structure that is constructed within a 1,000 feet of severe shrink-swell soils will require the building permit applicant to provide the Building Inspections Department with a site-specific soils investigation prepared by a Certified Soil Scientist or Professional Engineer." If that investigation confirms shrink-swell soils, a sealed footing and foundation plan from a professional engineer has to be in hand before the permit issues. The 600-square-foot line is the one that bites: almost any barndominium shop clears it, habitable space or not. The county takes property enquiries on this at 804-365-6134.

Hanover County Building Inspections, Shrink-Swell Soils Policy - Update, effective 6/23/2023, signed Richard T. Gordon, CBO, hanovercounty.gov/DocumentCenter/View/9248

The Bay Act reaches here, but not across the whole county
Hanover is one of the 29 counties named as Tidewater Virginia in the Chesapeake Bay Preservation Act at Va. Code 62.1-44.15:68, so the Act applies. What it does not do here is blanket the county. Where Chesterfield's ordinance says "the entire County is designated as an RMA", Hanover's section 10-36 draws the Resource Management Area as a band contiguous to the inland boundary of the Resource Protection Area, made of floodplains, highly erodible soils including steep slopes, highly permeable soils and non-tidal wetlands, and where none of those are present it is simply 150 feet wide. The county's own Public Works page proves the practical difference by asking "Not sure if you're in a CBPA? Contact us to check your property's location." In a county-wide designation that question would not arise. Inside a preservation area the consequences are large: a 100-foot buffer along both sides of any water body with perennial flow, a reserve drainfield of capacity at least equal to the primary one on any lot proposed for new construction, nothing impervious built over either field, and any land disturbance over 2,500 square feet, expressly including single-family houses, septic tanks and drainfields, pulled into review.

Hanover County Code secs. 10-35, 10-36, 10-38 and 10-40, Chapter 10 Article II adopted as Ord. No. 02-35 on 17 Dec 2003, amended by Ord. No. 13-10 (12 Feb 2014) and 14-10 (12 Nov 2014); Hanover County Public Works, Septic Pump-Out Requirements, hanovercounty.gov/221

One town, and the two halves are split
Ashland is the only incorporated place in Hanover County. The Census records exactly one incorporated place inside county FIPS 51085, Ashland town at 7,982 people in 2025, against a balance of county of 108,441. The permitting split is not what most people assume. The county's Building Inspector's Office "is responsible for the enforcement of the Virginia Uniform Statewide Building Code (VUSBC) in Hanover County, Virginia and the Town of Ashland, Virginia", and Ashland's own website routes its Building Codes and Inspections menu item straight to the county's page. But Ashland keeps zoning: its own ordinance, its own 2025 zoning map, its own Board of Zoning Appeals, and a no-fee zoning permit that the county warns may be needed for an accessory structure in town even where no building permit is. Ashland also collects its own stormwater fee on any new impervious area of 50 square feet or more. The county even publishes a different fee total inside the town.

U.S. Census Bureau sub-est2025_51.csv (Vintage 2025 subcounty estimates), SUMLEV 157 records for county 085; Hanover County Building Inspections, hanovercounty.gov/211; Town of Ashland Zoning page, ashlandva.gov/262; Hanover County Residential Application Requirements, hanovercounty.gov/302

Ten acres in A-1, or two for family
Hanover's A-1 Agricultural district sets 10 acres as the minimum lot area for a single-family dwelling in a subdivision, with lot width and front yard scaled to the right-of-way: 450 feet of width and a 125-foot front yard on a 160-foot right-of-way, 250 feet and 60 feet on a 50-foot one. Height is capped at 2 to 2.5 storeys or 35 feet, whichever is less. The family homestead route in section 26-31 is the way to a smaller lot: the parent tract keeps at least 10 acres, each homestead lot is at least 2 acres, the grantee must be a defined relative, and the deed has to carry a covenant barring transfer for at least five years. AR-6 is 5 acres. And a lot recorded before the close of business on 9 October 1996 is deemed to satisfy the lot area and dimension rules, so the date on the plat still decides.

Hanover County Code secs. 26-24, 26-26, 26-27, 26-29, 26-31 and 26-39, Chapter 26 as adopted by Ord. No. 12-08 sec. 3 on 9 Jan 2013 and amended through Ord. No. 26-05 (27 May 2026)

Also worth knowing before you build in Hanover County

You cannot build the shop first and live in it
Section 26-246 is the sentence that decides the sequence on a Hanover build: "Except for buildings accessory to a farm, no accessory building shall be constructed upon a zoning lot for more than six (6) months prior to beginning construction of the main building and no accessory building shall be used for more than six (6) months unless the main building on the zoning lot is also being used or unless the main building is under construction. No accessory building, on a farm or otherwise, shall be used for dwelling except in accord with the specific provisions of this Ordinance." The six-month clock runs whether or not anyone moves in. The classic farm buildings, named in the ordinance as barns, stables, sheds, tool rooms, shops, bins, tanks and silos, sit outside that rule, but only as an accessory use on a farm of ten acres or more.

Hanover County Code secs. 26-19 and 26-246

No size cap on the shop, outside the floodplain
Nothing in Hanover's zoning ordinance caps an accessory building's floor area in the agricultural districts, so a shop may be larger than the house. The only accessory-size limit in the whole chapter sits in the Flood Hazard Overlay District, adopted as Ord. No. 24-02 on 22 May 2024, where an accessory structure is defined as non-residential and "accessory structures are not to exceed 600 square feet", with no variance available above that. What does constrain a shop elsewhere is placement rather than size: an accessory building in a rear yard may not occupy more than 30 percent of the required rear yard and must stand at least 5 feet from the rear line and 3 feet from a side line, no accessory building may project beyond a required yard line along a street, and there may never be more than one main building on a zoning lot.

Hanover County Code secs. 26-235.3, 26-238 and 26-247

An engineer or surveyor on every residential permit
Hanover re-enacted its erosion and stormwater article as Ord. No. 24-11 on 22 January 2025, and section 10-7 attaches to the building permit rather than to the floodplain. No building permit issues "until the effect of the one-hundred year (100-year) storm on the proposed building has been calculated by a licensed professional engineer or land surveyor", none issues for a lowest finished floor less than one foot above the 100-year flood elevation, and every residential building permit application must carry a grading plan showing existing and proposed grading, 100-year flood elevations, lowest finished floor and erosion controls, "prepared by a licensed professional engineer or land surveyor", plus the name of the responsible land disturber. The county's own plot-plan checklist then wants 2-foot contours, a minimum 6-inch fall within 10 feet of the structure, positive drainage offsite at 1 percent, and driveway culverts of at least 15 inches sized for the 10-year storm with computations attached.

Hanover County Code sec. 10-7, adopted as Ord. No. 24-11 sec. 1 on 22 Jan 2025; Hanover County Public Works DPW Form 201, Land Disturbance Permit Application: Single Family Residence, revised September 2020, hanovercounty.gov/DocumentCenter/View/164

Living quarters in a second building are a special exception
One building holding both the home and the shop is simply a single-family detached dwelling, permitted by right in A-1, AR-6 and RC. Put living quarters into a second building and Hanover has two named things, neither of them a right. A guest house is living quarters in a detached accessory building for temporary guests, which the ordinance defines as not more than 90 days in a calendar year, with no separate meter and no renting, leasing or selling as a separate dwelling. An accessory housing unit needs a special exception in A-1 and is capped hard: one per lot, no more than 25 percent of the main building's living area, no more than two bedrooms, two extra off-street parking spaces, the owner living on the property, and a term of three years renewable in three-year periods for a family member or two years for a certified medical hardship. On expiry it may no longer be occupied permanently but may be used as a guest house. Separately, an August 2025 ordinance now regulates secondary kitchens: same level as the main kitchen, no separate electric or water meter, no separate living area or second dwelling unit, and no physical barriers between the kitchen and the rest of the house.

Hanover County Code secs. 26-6 (definitions), 26-18, 26-19, 26-21, 26-280 and 26-300.2, the last adopted as Ord. No. 25-12 sec. 6 on 27 Aug 2025

What the soil survey actually maps here
The state's geological survey names the Mesozoic basins around Culpeper, Farmville, Danville and Richmond as Virginia's most likely expansive-soil ground, and the Taylorsville basin under Hanover is not among them for a reason the state's own report gives: it is mostly covered by Cretaceous and younger Coastal Plain sediments and is exposed only in its southern part. So the useful answer comes from the soil survey rather than the geology. USDA maps 119 soil units across 303,100 acres in Hanover, of which about 15,700 acres, roughly five percent of the county, carry a major component in the high linear-extensibility band. The extreme is Iredell at 17 percent, in the Orange-Iredell and Iredell-Orange complexes, and its official series description calls it a Vertic Hapludalf formed from diabase, diorite and gabbro, very slowly permeable, with clay content of 40 to 85 percent and "common slickensides and pressure faces". Triassic residuum does show up, in the Creedmoor and Mayodan soils, but the county's worst shrink-swell is the mafic rock, not the basin. Five percent of the county is a small number until you notice the policy reaches 1,000 feet beyond it.

USDA-NRCS Soil Data Access, SSURGO survey area VA085 Hanover County, sdmdataaccess.nrcs.usda.gov; NRCS Official Series Description, IREDELL, soilseries.sc.egov.usda.gov/OSD_Docs/I/IREDELL.html; Virginia Energy Open File Report 2013-01, Energy Resource Potential of the Mesozoic Basins in Virginia; Virginia Energy, Expansive Soils, energy.virginia.gov/geology/ExpansiveSoils.shtml

Steep ground and wet ground, both mapped
Hanover is not flat Coastal Plain all the way. The soil survey maps roughly 12,400 acres in units whose major component runs to 25 to 45 percent slope and about 5,700 acres reaching 45 to 65 percent, mostly the Nevarc-Remlik complexes on the river bluffs. That is well past the 33.3 percent gradient Roanoke County's Office of Building Safety publishes as the point at which the code it enforces wants an engineered site study and foundation plan, so it is a question worth putting to the building official before a foundation is drawn. At the other extreme, about 35,900 acres, roughly 12 percent of the mapped county, carry a dominant flooding frequency of frequent or occasional, and the single largest map unit in Hanover is 18,440 acres of nearly level Fluvaquents. That is the ground the county's 100-year storm calculation exists for.

USDA-NRCS Soil Data Access, SSURGO survey area VA085; Roanoke County Office of Building Safety guidance on slopes above 33.3 percent, as recorded in research/statewide/soils-karst-and-slopes.md

Published fees, and a lower total inside Ashland
The Board of Supervisors set the current building permit fees by resolution dated 12 September 2025 under the authority of Ordinance 05-08. A new one- or two-family dwelling is $525.00; additions, alterations, sheds, garages and other similar residential structures are a flat $99.75; electrical, mechanical and plumbing permits for a dwelling are $99.75 each; the application and processing fee is $21.00 and plan review is 20 percent of the building permit fee. Starting work before the permit is approved adds an investigative fee of $89.25. The totals the county publishes at the counter are $713.50 for a dwelling, $723.50 for a townhouse or duplex on county water and sewer, and $535.50 for a dwelling in the Town of Ashland, where the town collects its own stormwater fee separately.

Hanover County Board of Supervisors, Resolution - Building Permit Fees, dated 12 September 2025, hanovercounty.gov/DocumentCenter/View/1313; Hanover County Building Inspections, Apply for Permit, hanovercounty.gov/1219

Two working days, or bring your own inspector
Hanover's Third-Party Inspection Policy, effective 16 March 2019 and updated 26 March 2026, publishes a service standard most counties do not: "If Hanover Building Inspections is unable to perform a requested inspection within two working days of the scheduled date, the applicant may obtain a third-party inspection without prior approval." Residential footing and poured-wall inspections may be done by a third party without prior approval in any case. The inspector must be a Registered Design Professional licensed in Virginia, work under one's direct supervision, or be with an approved agency, and the report has to carry the design professional's seal and reach the county within 48 hours.

Hanover Building Inspections, Third-Party Inspection Policy, effective 16 March 2019, updated 3/26/2026, hanovercounty.gov/DocumentCenter/View/3274

The Hanover ZIP is mostly not in Hanover
ZIP 23069 carries the post-office name Hanover and sits on the county building department's own mailing address, and only 41.7 percent of its land area is inside Hanover County. About 35.4 percent is King William County across the Pamunkey and 22.9 percent is Caroline, each with its own building official, its own zoning ordinance and its own Table R301.2 figures. It is not the only one that strays: 23059 at Glen Allen is 59.3 percent Hanover and 38.9 percent Henrico, 23146 at Rockville is 78.4 percent Hanover and 21.6 percent Goochland, and 23015 at Beaverdam spreads across Spotsylvania, Caroline and Louisa. Mechanicsville's 23111 and 23116 and Ashland's 23005 are wholly inside the county. The parcel decides, never the postal address.

U.S. Census Bureau 2020 ZCTA-to-county relationship file, tab20_zcta520_county20_natl.txt, www2.census.gov

Suburban north, farmed everywhere else
Hanover covers 467.61 square miles at 249 people to the square mile and grew 5.6 percent between 2020 and 2025, from 110,211 to 116,423. But 30.7 percent of its land is still in farms: 91,864 acres across 512 farms, average 179 acres, median 38 acres, with 318 farms under 50 acres and 18,259 acres of woodland inside farm boundaries. That is the deepest working-land supply in the Richmond ring, well ahead of Goochland's 40,711 acres, and it is why Richmond city pages route here. The suburban half is Mechanicsville, at 39,482 people the largest unincorporated concentration in the county, and several of the county's own zoning rules turn on whether a parcel is inside or outside the suburban service area drawn in the comprehensive plan.

U.S. Census Bureau Vintage 2025 population estimates and 2025 county Gazetteer file (GEOID 51085); USDA 2022 Census of Agriculture county table; Hanover County Code secs. 26-19, 26-21 and 6-16

The lowest radon band, and the state disagrees with it
EPA's county radon table puts Hanover in Zone 3, the lowest predicted band, under 2 picocuries per litre, alongside most of the counties east of I-95. The Virginia Department of Health publishes a page headed known inaccuracies on the EPA Virginia risk map, and it names Hanover directly: the low-risk I-95 counties bordering high-risk jurisdictions to their west, it says, should be moderate risk, and high radon results have been found in every Virginia county including all those designated low risk. The code only lets a locality adopt the radon-resistant construction appendix in Zone 1, so Hanover cannot require it. A passive sub-slab stack is cheap while the slab is still a drawing and expensive afterwards, which is the whole argument for deciding it early.

EPA radon zone county table; Virginia Department of Health, EPA Radon Risk Map for Virginia, last updated 15 May 2024, vdh.virginia.gov; both as recorded in research/statewide/design-criteria-and-climate.md

The clay that needs an engineer also sizes the drainfield
Virginia sizes a septic drainfield at 150 gallons a day per bedroom under 12VAC5-610-670 Table 5.1, with no living-area band and no row at all for a shop, a garage or a barn however large. And 12VAC5-610-490 assigns the design rate from soil texture rather than from a pit test, so clay lands in Texture Group IV at 91 minutes per inch or slower, past the 45-minute trigger for a mandatory reserve area and within reach of the 120-minute ceiling. Iredell, Hanover's worst shrink-swell soil, is described by USDA as very slowly permeable with 40 to 85 percent clay in its upper subsoil. Inside a Chesapeake Bay preservation area the reserve field jumps to 100 percent of the primary and nothing impervious may be built over either. The Health Department issues the permit, not the county, and Hanover publishes 804-365-4313 for well and septic questions.

12VAC5-610-490, 12VAC5-610-670 Table 5.1 and 12VAC5-610-710; Hanover County Code sec. 10-38(5); NRCS Official Series Description, IREDELL; Hanover County Building Inspections, Apply for Permit, hanovercounty.gov/1219

An excavator grading a compacted building pad on a cleared lot, with survey stakes and a drainage swale visible.
Below the slab

The expensive surprises are in the ground, not the building

What moves a Virginia budget is usually below grade, and it is soil rather than rock. Five localities already treat a soil answer as a condition of the permit rather than a recommendation — Fauquier, Chesterfield, Isle of Wight, Madison and Culpeper each require a soil report, an engineered foundation design, or both before the footings are approved. Chesterfield asks for one on every new house with no opt-out, on its own published reasoning that small amounts of shrink-swell soil may turn up anywhere in the county. Virginia Energy puts the same point bluntly: standard homeowner's insurance does not cover damage from expansive or compressive soils. Along the Interstate 81 corridor the question changes shape entirely — Virginia Energy counts twenty-seven Virginia counties in the karst zone that follows that road, where what matters is what is under the slab rather than what the slab sits in, and karst does not stay west of the Blue Ridge: Loudoun County publishes karst terrain of its own, on the other side of it. The same ground then sizes the septic system, because 12VAC5-610 works from bedrooms and soil texture — 150 gallons a day per bedroom, with no row in the table for a shop, a garage or a barn at all, and clay assigned to the slowest texture group at 91 minutes per inch or worse, past the 45 minutes per inch that makes a reserve drainfield mandatory. The soil that needs a foundation engineer multiplies the drainfield. So the site work, the foundation and the drainfield get resolved together rather than one at a time. We price the dirt before we price the building.

What we build in Hanover County

All nine services are available in Hanover County. What a build costs depends far more on the parcel than on square footage, so we price against your land rather than publishing a rate card.

Custom Plans

Barndominium floor plans drawn to your parcel and to the design criteria your own Virginia locality publishes, not to a generic national spec.

Barndominium Kits

Engineered barndominium shell packages delivered to your Virginia land, drawn to the criteria your own building department fills in.

Turnkey Builds

Start to finish barndominium construction: permits, site work, shell and full interior finish, under one contract and one schedule.

See all nine services

What a build looks like

Three stages every Hanover County project passes through, from a raw parcel to a finished home. Site work first, because that is where the budget is decided.

Aerial view of an undeveloped rural lot with cleared grass, a oak and hickory treeline with a few loblolly pines, and a pale gravel access track.
Stage one

The parcel

Zoning, setbacks, flood zone and utility access get checked before anything is drawn.

An excavator grading a compacted building pad on a cleared lot, with survey stakes and a drainage swale visible.
Stage two

Pad and permit

Clearing, grading and a compacted pad, while the submittal works through whichever office issues the permit where you are building.

A finished barndominium at dusk with warm interior lighting glowing through its large windows.
Stage three

Frame to finish

Shell erected and dried in, then systems, insulation and interior finish through to CO.

Those are the rules where you are building in Hanover County. Tell us what you want to build and we will draw it to them.

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Where we build around Hanover County

Hanover County and the rural land around it. The buildable acreage for a project this size usually sits outside the city limits, which is frequently what changes who issues your permit.

The Hanover County service area, including the rural acreage outside the built-up edge, which is where the parcels big enough for a build like this usually sit. The map marks the territory we build in. It is not a branch location, and there is no office at this pin.

Keep reading

The questions that usually come next once you know what Hanover County allows.

Barndominium Cost Guide

Sourced per-square-foot ranges by tier and by size, with a calculator built on the same figures.

Read it

Is It Legal in Virginia?

Classification, zoning, the HOA gate, and why "nonresidential farm building" does not cover a home.

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How Long Does It Take?

Census build-duration data, and what actually sets the permit clock where you are building.

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Nearby areas we build in

Others we cover nearby. One may be a county, another an independent city that belongs to no county at all, and another a town inside a county — so the office that issues the permit, the fees it charges, the zoning and the design criteria each locality publishes can all differ from one card to the next.

Richmond

Richmond
Goochland County

Goochland County
Louisa County

Louisa County
New Kent County

New Kent County

Building in Hanover County: common questions

9 questions we get asked most often about building in Hanover County. If yours is not on the list, ask it directly.

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How big does my lot have to be to build a barndominium in Hanover County?
In the A-1 Agricultural district, ten acres for a new single-family dwelling created through subdivision. That is twice Chesterfield's agricultural minimum and it is the single most important number to check before you make an offer. The other dimensions scale with the road you front: a lot on a 160-foot right-of-way needs 450 feet of width and a 125-foot front yard, while one on a 50-foot right-of-way needs 250 feet of width and a 60-foot front yard. Side setbacks are 25 feet minimum and 50 feet aggregate, and the rear yard is 30 or 40 feet. Height is capped at two to two and a half storeys or 35 feet, whichever is less. There are two routes to something smaller. AR-6, the agricultural residential district, is five acres, though a parcel has to be at least four acres to be considered for AR-6 zoning at all and the number of lots is tiered by parcel size. And the family homestead provision lets a parent tract of at least ten acres throw off homestead lots of at least two acres for a defined list of relatives, with a covenant barring transfer for five years recorded on the deed. Finally, check the plat date: a lot recorded before the close of business on 9 October 1996 is deemed to comply with the lot area and dimension rules as long as it meets the yard, setback and access requirements in force when you apply.
Can the shop be bigger than the house, and can I build it first?
Bigger, yes. Nothing in Hanover's zoning ordinance caps the floor area of an accessory building in the agricultural districts, so a shop can be larger than the living space. The one exception is the Flood Hazard Overlay District, where an accessory structure is limited to 600 square feet and no variance is available above that, so a parcel inside the mapped flood hazard area is a completely different problem. What does constrain a shop is placement: an accessory building in a rear yard may not take more than 30 percent of the required rear yard, must stand at least five feet from the rear line and three feet from a side line, and may not project beyond a required yard line along a street. First, no. Section 26-246 says that except for buildings accessory to a farm, an accessory building may not be constructed more than six months before construction of the main building begins, and may not be used for more than six months unless the main building is in use or under construction. The same section adds that no accessory building, on a farm or otherwise, may be used as a dwelling except as the ordinance specifically provides. So the familiar plan of putting up the shop, living in the corner of it and finishing the house later does not work here. The farm exception is real but narrow: the ordinance's farm accessory buildings, which it lists as barns, stables, sheds, tool rooms, shops, bins, tanks and silos, are a permitted accessory use in A-1 only on a farm of ten acres or more.
What are the design numbers I have to build to, and what is the snow-load issue?
The county sets them, not the state. The 2021 Virginia Residential Code prints Table R301.2 blank and leaves the figures to the locality, and Hanover publishes its own sheet: ground snow load 20 psf, ultimate design wind speed 115 mph, topographic effects No, special wind region No, windborne debris zone No, weathering Severe, frost line depth 18 inches, termite Severe, ice barrier underlayment required Yes, air freezing index 228 and mean annual temperature 57.7 degrees. It publishes no seismic design category, which is an answer rather than a gap. Two of those deserve a second look. Termite Severe is a heavier rating than most Virginia localities publish and it drives sill plate treatment and slab-edge detailing on a building that is nearly all slab edge. And the snow figure sits inside a live complication that Hanover itself has written about. The county has issued a document called 2021 VCC Provisions of ASCE 7 saying the snow figures printed in the 2021 code are the ASCE 7-16 maps while the state intended ASCE 7-22, that the mismatch can understate ground snow by around 25 psf when 7-16 figures are fed into 7-22 load combinations, and that a structure designed that way may be unsafe. Its rule is that designers may not mix the two editions in one project. Prince William County and Fairfax County have published materially the same guidance. On a wide-span metal roof that is a concrete question to put to whoever engineers your building: which snow map, which ASCE edition, and is it the same edition all the way through the load path.
Will I need a soil report before Hanover will issue my permit?
Possibly, and the trigger is unusual, so it is worth understanding exactly. Hanover's Shrink-Swell Soils Policy took effect on 23 June 2023 and covers all new single-family dwellings, all attached additions, sunrooms and screened porches, and all detached light-frame structures over 600 square feet. That last category is what catches a barndominium shop, and it does not matter whether the shop contains habitable space. The county does the first screen itself: staff locate your property on the soils map in the Soil Survey of Hanover County, and if the structure will be built within 1,000 feet of severe shrink-swell soils, you have to supply a site-specific soils investigation by a certified soil scientist or a professional engineer. If that investigation confirms shrink-swell soils on the site, a sealed footing and foundation plan from an engineer has to be in the county's hands before the permit issues. Below 600 square feet, or on ground the soil survey does not flag, no engineered footing is required. This is a narrower test than Chesterfield's, which demands a bored, sealed report on every new house county-wide, but the 1,000-foot radius makes it reach considerably further than the flagged soils themselves. Hanover publishes a number for checking a specific property before you buy: 804-365-6134.
Does the Chesapeake Bay Act affect my land in Hanover?
It might, and unlike some neighbouring counties the honest answer is that it depends on where the parcel sits. Hanover is on the statutory Tidewater Virginia list at Va. Code 62.1-44.15:68, so the Act applies to the county, but Hanover has not designated its whole territory a Resource Management Area the way Chesterfield has. Its ordinance draws the RMA as a band contiguous to the inland edge of the Resource Protection Area, made up of floodplains, highly erodible soils including steep slopes, highly permeable soils and non-tidal wetlands, and where none of those are present it is simply 150 feet wide. The county's own Public Works page invites you to phone and ask whether your property is in a preservation area at all, which tells you plainly that many are not. If your parcel is in one, three things follow. A 100-foot vegetated buffer runs along both sides of any water body with perennial flow, which means a 200-foot corridor across the land, and a new dwelling is not among the uses the ordinance allows inside it. Any land disturbance over 2,500 square feet, which the ordinance says expressly includes single-family houses, septic tanks and drainfields, goes through review. And every lot proposed for new construction must carry a reserve drainfield of capacity at least equal to the primary one, with no impervious surface built over either. There are narrow buffer-encroachment routes for lots recorded before 1 October 1989 and between then and 31 December 2003, and neither ever reaches into the seaward 50 feet of the buffer. Note that Hanover's second date is 31 December 2003, which is not the date some other Virginia counties use.
Who issues my permit if I build in Ashland?
Hanover County does, and this is the sort of thing worth checking rather than assuming, because in Virginia a town may or may not run its own building department. Ashland does not. The county states in its own words that its Building Inspector's Office enforces the Virginia Uniform Statewide Building Code in Hanover County and in the Town of Ashland, and Ashland's own website sends its Building Codes and Inspections menu item straight through to the county's page. Zoning is the other half and it stays with the town. Ashland has its own zoning ordinance, its own 2025 zoning map, its own residential districts and its own Board of Zoning Appeals, and it issues a no-fee zoning permit that the county specifically warns may be required for an accessory structure in town even where the structure is exempt from a building permit. Ashland also runs its own stormwater programme and collects its own fee on any new impervious area of 50 square feet or more, which reaches decks, patios, walkways and accessory buildings, not just houses. The county even publishes a different permit total for a dwelling inside the town, $535.50 against $713.50 elsewhere in the county. Ashland is the only incorporated town in Hanover, so everywhere else in the county the answer is the county on both counts.
What does a permit cost and what has to be in the application?
The Board of Supervisors sets building permit fees by resolution, and the current one is dated 12 September 2025. A new one- or two-family dwelling is $525.00. Additions, alterations, sheds, garages and other similar residential structures are a flat $99.75, which is notably simple compared with the valuation-based schedules some counties use. Electrical, mechanical and plumbing permits for a dwelling are $99.75 each, the application and processing fee is $21.00, and plan review is 20 percent of the building permit fee. Starting work before the permit is approved adds an investigative fee of $89.25. The totals the county publishes at the counter are $713.50 for a dwelling, $723.50 for a townhouse or duplex on county water and sewer, and $535.50 for a dwelling in Ashland. On the application itself, expect a plans set, a plot plan with every setback dimensioned, and a completed land disturbance permit application for a single-family residence. If the house is on a well or septic, either file the Health Department application with it or write the existing health permit number on the form. A contractor supplies a copy of a valid Virginia contractor licence, and anyone not required by law to hold one supplies a written statement supported by an affidavit on the county's exemption form. The county will not accept an application if the subdivision or new section has not been recorded, and it will not accept an incomplete one. Paper plans are limited to 11 by 17 printed to scale; anything larger goes in electronically. Once the house is finished, a single-family dwelling needs a residential energy certificate posted at the heating equipment and a blower door test result.
Why does Hanover want an engineer or a surveyor before it will issue the permit?
Because of section 10-7 of the county code, re-enacted in January 2025, and it catches every residential permit rather than only the ones near water. No building permit issues until the effect of the 100-year storm on the proposed building has been calculated by a professional engineer or a land surveyor, and none issues at all for a building whose lowest finished floor would sit less than one foot above the 100-year flood elevation. Every residential building permit application has to include a grading plan showing existing topography, proposed grading, 100-year flood elevations, the lowest finished floor elevation and erosion controls, and that plan has to be prepared by an engineer or a land surveyor. You also have to name a responsible land disturber. The county's plot-plan checklist goes further: two-foot contours within disturbed areas, a demonstrated minimum fall of six inches within ten feet of the structure, positive drainage offsite at a minimum one percent grade, and driveway culverts of at least fifteen inches sized for the ten-year storm with the sizing computations attached. The reason it applies everywhere becomes obvious from the soil survey: about twelve percent of the mapped county floods frequently or occasionally, and the single largest soil map unit in Hanover is 18,440 acres of nearly level floodplain. Budget the survey and the grading plan from the beginning; it is not an optional refinement here.
Can I put an apartment or a second unit in the shop for family?
Only through a specific and quite tightly drawn route. If the living space and the shop are under one roof, you simply have a single-family detached dwelling, which is permitted by right in A-1, AR-6 and RC, and there is no size limit on the shop half. If you want living quarters in a second building on a lot that already has a house, Hanover recognises two things. A guest house is living quarters in a detached accessory building for temporary guests of the people in the main house, and the ordinance defines temporary as not more than ninety days in a calendar year, with no separate utility meter and no renting, leasing or selling it as a separate dwelling. An accessory housing unit is the real second unit, and in the agricultural district it needs a special exception rather than being available by right. Its limits are firm: one per lot, no more than 25 percent of the main building's finished living area, no more than two bedrooms, two additional off-street parking spaces, external access in a side or rear yard, and the owner has to live on the property. The permission is also time-limited. For a family member it runs three years and is renewable in three-year periods; for a certified medical hardship it runs two years and renews in two-year periods. When it expires, the unit may no longer be occupied permanently, though it may continue as a guest house. One more thing worth knowing if you are planning a kitchenette: an ordinance adopted in August 2025 now regulates secondary kitchens, requiring them on the same level as the main kitchen, on the same meters, with no separate living area or second dwelling unit created and no physical barriers between the kitchen and the rest of the house.

Building in Hanover County?

Start with the plan. Tell us what you want to build and we will draw it, then confirm which office issues the permit for your parcel, what it will let you put there, and what wind load it has to meet. That conversation costs nothing.

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