Steep south-west Virginia pasture and hayfields running up to a hardwood ridge with mist in the hollows.
Pulaski County One statewide code, no local amendments

Barndominium Builders in Pulaski & Floyd Counties, VA

Pulaski and Floyd share a county line and almost nothing else. Pulaski is a Valley and Ridge county on I-81, underlain by carbonate bedrock, with a 189-page Unified Development Ordinance, a zoning permit required alongside every building permit, and a rule that an accessory building may not exceed the height of the house it serves. Floyd sits on the Blue Ridge plateau between 2,000 and 3,000 feet, on Precambrian granite, gneiss and schist, and has no zoning ordinance at all: its minimum lot size comes from a Land Division Ordinance re-adopted in November 2025, and its setbacks come off the building department's own permit checklist. The two counties even publish different design criteria, agreeing on wind speed and seismic category and disagreeing on ground snow load and frost depth. Two building departments, two fee schedules fourteen years apart, and one page that keeps them apart.

Pulaski & Floyd Counties at a glance

County
Pulaski County
Cities & counties covered
Pulaski County 33,586 · Floyd County 15,789
Site visits
Site visits across both counties, from Dublin and the I-81 corridor up onto the Floyd plateau

Building conditions in Pulaski & Floyd Counties

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 Pulaski & Floyd Counties , Pulaski County, Virginia : design wind speed 115 mph in Pulaski County; 115 mph 3-second gust in Floyd County. BUILD CONDITIONS PULASKI & FLOYD C…Pulaski CountyONE STATEWIDE CODEDESIGN WIND SPEED115 mph in Pulaski…The 2021 Virginia Residential Code prints Table R301.2 blank with em-dashes and the instructionthat additional criteria shall be established by the local jurisdiction, so these are each…ZONING · PULASKI COUNTY: AGRICULTURAL (A), CO…Pulaski County: 1 acre in Agricultur…Pulaski County's Unified Development Ordinance, adopted 26 October2015 and last amended 27 July 2025, caps principal buildings at 40…WHO ISSUES THE PERMITPulaski County Building Office and P…In Pulaski the two desks sit in the same Community Developmentoffice on the same phone number, and both are involved: a New…
Build conditions for Pulaski & Floyd Counties, drawn from the sourced facts on this page. Every figure above is cited in the quick-facts panel below, with its source and vintage.
Pulaski's design criteria
Pulaski County publishes its own Table R301.2 fill-in on a sheet headed Local Design Criteria for Pulaski County: 25 psf ground snow load, 115 mph three-second gust, seismic design category B, Severe weathering, 24 inch frost depth, Moderate to Heavy termite, Slight to Moderate decay, a 16 degree winter design temperature, ice shield underlayment required, and flood hazards taken from the FEMA map. Those ten rows are the county's, not the state's — the residential code prints the table blank and tells each locality to fill it in.

Pulaski County Building Office, "Information for Designers — Local Design Criteria for Pulaski County" (2025), pulaskicounty.org/documents/building/applications/information-for-designers-2025.pdf

Floyd's design criteria, and where it is printed
Floyd County publishes five rows and no more: ground snow load 30, wind design speed 115 mph three-second gust, Exposure B, seismic design category B, and a frost line depth of 18 inches. The only permit form in the county that reprints them is the Garage and Carport application, under the heading "Prefabricated Structures Must Show" — so a buyer ordering a metal shop building is being handed the five numbers the kit's engineering has to answer to, on the form itself.

Floyd County Department of Inspections, Building Inspections page and Garage/Carport Permit application, floydcova.gov/building-inspections

Floyd County has no zoning ordinance
Floyd County's Land Development Code contains erosion and sediment control, floods, streets and sidewalks, subdivisions and a fee schedule — and no zoning chapter. The county's own ordinance page lists a comprehensive plan, a manufactured home park ordinance, a solid waste ordinance and a land division ordinance, with no zoning ordinance among them. The building department's published list of what it enforces names the building code, the erosion control ordinance, the manufactured home ordinance and the subdivision ordinance, and stops. And the Land Division Ordinance itself, 3,716 lines of it, never uses the word zoning. So in unincorporated Floyd there is no district, no use table, no height limit, no lot coverage cap and no rule about accessory buildings.

Floyd County Code of Ordinances Part II Land Development Code (Municode client 5339, product 13477); floydcova.gov/code-of-ordinances; floydcova.gov/building-inspections; Floyd County Land Division Ordinance (adopted 18 November 2025)

In Pulaski, the shop may not be taller than the house
Pulaski County's Unified Development Ordinance defines an accessory building as one detached from the principal building, incidental and subordinate to it, and adds that accessory buildings and structures shall not exceed the height of the primary structure. The constraint is height, not floor area: nothing in the district tables caps a shop's square footage against the house's. The same definition says that where an accessory building is attached to the principal building in a substantial manner, by a wall or a roof, it is treated as part of the principal building — which is exactly what a barndominium is.

Pulaski County Unified Development Ordinance, Article 12 Definitions, "Accessory Building or Structure" (amended 27 July 2025)

The 600 square foot line in Pulaski
Pulaski County's Accessory Structure Guide sets the thresholds a shop crosses. A shed of 256 square feet or less needs no building permit but must be anchored at each corner. Between 256 and 600 square feet the structure needs continuous foundation walls or grouted masonry piers on permanent footings at least 12 inches below finished grade. Over 600 square feet it needs continuous foundation walls with a permanent footing or turndown slab at least 24 inches below finished grade — the county's own frost depth — with half inch anchor bolts. Any pre-engineered building must be stamped by a registered design professional, and a zoning permit is required whether or not a building permit is.

Pulaski County Building Department, "Accessory Structure Guide — Sheds, Carports, Garages", pulaskicounty.org/documents/building/resources/accessory-structures.pdf

Karst stops at the county line
The Virginia Speleological Survey table reproduced in a 2003 Virginia Tech study puts Pulaski County in the 40 percent band alongside Augusta, Bath, Montgomery, Rockbridge, Rockingham and Tazewell. Floyd County does not appear on that table in any band, and its own comprehensive plan never uses the words karst, sinkhole, limestone or dolomite once. The soil survey measures the same boundary from the other direction: 62,645 acres of Pulaski County sit on residuum or colluvium weathered from limestone and dolomite, and the identical query over Floyd County returns no acres at all.

Belo, "Natural Hazard Mitigation Planning For Karst Terrains in Virginia", Virginia Tech, May 2003, Table 3.1 (Virginia Speleological Survey, 2003); Floyd County Comprehensive Plan; USDA NRCS Soil Data Access, survey areas VA155 and VA063, queried 2 September 2026

Also worth knowing before you build in Pulaski & Floyd Counties

The two tables disagree, and not in the direction you would guess
Pulaski and Floyd publish the same 115 mph wind speed and the same seismic design category B. They part company on the other two rows that matter to a slab and a footing: Floyd asks for 30 psf of ground snow against Pulaski's 25, and Pulaski asks for a 24 inch frost depth against Floyd's 18. The higher, colder county publishes the shallower footing. Montgomery County next door publishes 30 psf with 110 mph and 24 inches, so there is no neighbour whose numbers can be borrowed for either one.

Pulaski County Information for Designers (2025) and Floyd County Building Inspections page, read side by side 2 September 2026

Where Floyd's minimum lot size actually comes from
Floyd County repealed and re-adopted its Land Division Ordinance on 18 November 2025, effective 1 January 2026, and that ordinance rather than any zoning map carries the numbers. Table 4-2-0 sets 2 acres with 100 feet of road frontage and 175 feet of width at the building setback for a lot served by private water and wastewater, 0.5 acre where one public utility reaches the lot and 0.25 acre where both do. A Large Lot Division needs 25 acres, with one limited access lot per plat allowed at 1 acre if it already holds a dwelling, well and septic and 2 acres otherwise. Any plat is capped at ten new lots including the residual.

Floyd County Land Division Ordinance, effective 1 January 2026, sections 4-0, 4-1 and 4-2 with Table 4-2-0

Floyd's setbacks come off a permit checklist
With no zoning ordinance to set them, Floyd County's setbacks are published by the building department on its own page and repeated on the building permit package: 35 feet from the edge of any roadway, state-maintained or private, 60 feet from the centre of the road, and 5 feet from structures and property lines on residential work. That is the whole of it. There is no separate accessory-structure setback, because there is no ordinance that defines an accessory structure.

Floyd County Department of Inspections, Building Inspections page (SETBACKS) and Building Permit Package checklist, floydcova.gov

Pulaski's districts and lot sizes
Pulaski County zones to three rural districts. Agricultural takes a 1 acre minimum lot, Conservation 2 acres and Rural Residential 0.75 acre; all three cap the principal building at 40 feet and lot coverage at 50 percent, and all three cap an accessory building at 35 feet. Setbacks are 35 front, 20 side and 35 rear in Agricultural and Conservation, and 25, 15 and 35 in Rural Residential, with an accessory building over 256 square feet taking 10 feet at the side and rear. Agricultural structures may break the 40 foot height limit if every setback grows a foot for each foot of extra height.

Pulaski County Unified Development Ordinance, Article 4 sections 4.3, 4.4 and 4.5 lot standards (amended 27 July 2025)

Pulaski's living quarters rules, live now
Pulaski County's ordinance already handles the shop-with-an-apartment question. Its definition of a single-family detached dwelling says a garage apartment or other accessory dwelling can be attached to the principal dwelling with an approved building permit if the apartment is for the same family unit. A separate accessory dwelling unit is capped at 2,000 heated square feet and at two storeys or the height of the primary structure, whichever is less, with one per lot, placed in the side or rear yard no closer to the frontage road than the house, and meeting the primary structure's setbacks. Virginia's statewide accessory dwelling statute does not commence until 1 July 2027, so Pulaski's own rule is the one that applies today.

Pulaski County Unified Development Ordinance, Article 12 Definitions and section 4.22 A.1 conditional use standards; Va. Code § 15.2-2292.4 (effective 1 July 2027)

What Pulaski's sinkhole rule actually requires
Pulaski County's only codified sinkhole provision is section 7.9 of its erosion and sediment control ordinance. Where stormwater runoff to a sinkhole increases as a result of improvements, a certified professional geologist registered in Virginia must produce a study showing the sinkhole can take the post-development volume and rate, and that report goes in with the erosion and sediment control plan. It also wants a drainage easement for the whole ten-year storm and a vegetated flow path at least 80 feet long to the sinkhole floor. The trigger is a plan, and disturbances under 10,000 square feet are exempt. Nothing in the county requires a geotechnical or geophysical investigation before a foundation permit is issued.

Pulaski County Unified Development Ordinance, Article 7 (Erosion and Sediment Control) sections 7.4, 7.9 and the exemption at item (9)

The county says the excavation cost is unpredictable
Pulaski County's Comprehensive Plan 2030, adopted 16 December 2019, carries a section headed Karst Topography: much of the county is underlain by carbonate bedrock, soil cover is thin, and surface water infiltrates rapidly through sinkholes. It then says the sentence a builder needs — that in karst terrain pinnacle erosion is common, and therefore excavation costs may vary within a relatively small area — and adds that small cave-ins are not uncommon after heavy rain. That is a plan rather than an ordinance, so it guides rather than binds, but it is the county telling you in its own words why the same footing trench can cost differently at two ends of the same slab.

Pulaski County Comprehensive Plan 2030, Land Use chapter, adopted by the Board of Supervisors 16 December 2019

What Floyd sits on instead
Floyd County's own comprehensive plan describes almost the whole county as underlain by Precambrian igneous and metamorphic rock — the granites, gneisses and schists of the Leatherwood granite and the Wissachickon and Lynchburg gneiss formations — and says the rock substrate generally possesses load bearing capacities acceptable for development. It also says the county lacks true aquifers and relies on water-filled fractures: granite and granite gneiss weathered to a sandy soil 75 to 100 feet deep in the northwest, gneisses and schists weathered 25 to 50 feet in the southeast, and a granitic band one to three miles wide weathered less than 25 feet where the rock below has been virtually non-productive. Wells must be cased through the saprolite. During the 1998 to 2002 drought 500 replacement wells were drilled, dispersed across the county rather than clustered.

Floyd County Comprehensive Plan, Chapter 3 (General Physiographic Features, Geology and Minerals, General Hydrologic Features)

Shrink-swell runs the opposite way to the intuition
Measured across the soil survey, the county with the voids under it also has the clay. Map units with a horizon at linear extensibility of 6 percent or more cover 55,153 of Pulaski County's 188,300 mapped acres, 29 percent of it, against 19,085 of Floyd County's 244,000 acres, under 8 percent. That is what carbonate residuum does: the limestone dissolves and the clay left in it stays. Neither county is among the areas Virginia's own geological survey names for expansive soils, but between these two neighbours the difference is nearly fourfold and it is on the side nobody expects.

USDA NRCS Soil Data Access, chorizon linear extensibility by map unit acre, survey areas VA155 and VA063, queried 2 September 2026

Half of each county has rock within a metre
The one row where the two counties agree is the one that decides how a footing trench goes in. Bedrock is mapped within 100 centimetres of the surface on 125,034 acres of Floyd County, 51.2 percent of it, and on 96,293 acres of Pulaski County, 51.1 percent. The reason differs completely: shallow crystalline rock under Floyd, pinnacled carbonate under Pulaski where the depth to rock can change by feet across a slab. The same excavator hits rock on half of either county; only in Pulaski is the depth unpredictable.

USDA NRCS Soil Data Access, muaggatt minimum depth to bedrock by map unit acre, survey areas VA063 and VA155, queried 2 September 2026

No acre in either county rates well for a drainfield
Against the NRCS septic tank absorption field interpretation, zero acres in either county rate Not limited. Floyd County has 174,915 acres Very limited against 28,568 Somewhat limited; Pulaski County has 143,913 against 15,227. The dominant limitations are slope and shallow bedrock in both — 130,457 acres of Floyd and 100,280 of Pulaski are limited by slopes of 8 percent or more. Where they split is percolation: 47,496 acres of Pulaski are limited by slow percolation in the 24 to 72 inch band against 7,820 acres of Floyd, six times as much, which is the carbonate clay again. Virginia sizes a drainfield at 150 gallons per day per bedroom with no row for a shop, garage or barn at all, and the Health Department issues the permit.

USDA NRCS Soil Data Access, interpretation "ENG - Septic Tank Absorption Fields", survey areas VA063 and VA155, queried 2 September 2026; 12VAC5-610-670 Table 5.1; Va. Code § 32.1-163.5

Two towns with land-use power, and one with 458 people
Pulaski County's planning office states that the incorporated towns of Pulaski and Dublin administer their own land use ordinances and should be consulted for development inside town limits, and the Town of Pulaski goes further and runs its own building department, where one officer is both the certified building official and the zoning administrator. Together those two towns hold 11,459 of the county's 33,586 people. Floyd County is the mirror image: its only incorporated town has 458 residents, 97 percent of the county's 15,789 people live outside it, and Floyd County itself issues the building permit inside the town, with the town reviewing the application against its own zoning ordinance first.

Census Bureau Vintage 2025 subcounty estimates (sub-est2025_51.csv); pulaskicounty.org/planning-zoning.html; pulaskitown.org Building & Occupancy Permit Information; Town of Floyd letter to the Floyd County Building Inspector published on floydcova.gov/building-inspections

The land, counted
The 2022 Census of Agriculture puts 100,913 acres of Floyd County in farms, 41.4 percent of its land, spread across 668 farm operations with a median size of 71 acres and 252 of them operating under 50 acres. Pulaski County has 74,264 acres in farms, 36.3 percent, across 390 operations with a median of 80 acres and 144 under 50. Floyd runs 71 percent more farm operations than Pulaski on a county only 19 percent larger, at 41 people per square mile against Pulaski's 105. Floyd grew 2.1 percent between 2020 and 2025 while Pulaski fell 0.7 percent.

USDA 2022 Census of Agriculture, county profiles for Floyd and Pulaski Counties; Census Bureau Vintage 2025 population estimates; 2025 Census Gazetteer land areas

Two fee schedules, fourteen years apart
Floyd County charges 30 cents a square foot with a 150 dollar minimum on new residential work, on a schedule effective 1 July 2022 whose covered list names a workshop outright, and exempts a non-livable detached building under 256 square feet. Pulaski County charges 16 cents a square foot plus 50 dollars per trade on a schedule adopted 22 September 2008, routes an accessory structure over 150 square feet through a miscellaneous permit at 30 dollars for the first thousand dollars of value plus 5 dollars per additional thousand, and adds a 25 dollar zoning permit. Both add the 2 percent state levy. Neither county levies an impact fee, a proffer or a capacity charge.

Floyd County Department of Inspections Rates, effective 07-01-22; Pulaski County Building Permit Fee Schedule, adopted 9-22-08, with the zoning fees block

The farm building exemption, on the counties' own forms
Both counties hand out a farm structure affidavit, and Floyd's quotes the definition in full: a farm building or structure means one not used for residential purposes, located where farming operations take place. Floyd's form is notarised and warns that a false affidavit is a violation of the building code carrying a fine up to 2,500 dollars. Floyd also charges a farm permit fee with a 100 dollar minimum, so the exemption is from the code, not from telling the county. A building anyone is going to live in fails the first words of the definition, in both counties, on paper the counties print themselves.

Floyd County Application for a Farm Building (Farm Permit) and Department of Inspections Rates; Pulaski County Farm Structure Affidavit, pulaskicounty.org/documents/building/applications/farm-structure-affidavit.pdf; Va. Code § 36-97

Neither county is a Bay Act locality, and the water explains it
The Chesapeake Bay Preservation Act reaches a closed statutory list of 29 counties and 17 cities, and neither Pulaski nor Floyd is on it — nor is any county next to them. The reason is which way the water runs: the New River drains north and west to the Ohio, and Floyd County's own plan puts it in a sentence, that the county sits atop the Blue Ridge plateau and thus all water flows out. So there is no 100 foot resource protection area buffer, no 2,500 square foot land disturbance trigger, no five-year pump-out and no Bay Act reserve drainfield here. What does apply is each county's own erosion and sediment control ordinance, which Floyd triggers at 10,000 square feet of disturbance.

Va. Code § 62.1-44.15:68; Floyd County Comprehensive Plan; Floyd County Building Inspections page; Pulaski County Unified Development Ordinance Article 7

Radon: a zone difference with no rule attached
Pulaski County is in the highest predicted radon zone and Floyd County is in the middle one, and neither difference changes what a builder must do. Pulaski publishes a document headed 2021 Residential New Construction Radon Requirements, but its text is the state code's own Appendix AF, which begins by saying where radon-resistant construction is required — it presupposes a trigger rather than creating one, and the county's development ordinance contains no radon provision at all. Radon-resistant construction is not required in either county. Appendix AF is still worth reading by anyone who wants to do it voluntarily: testing after the air-tightness test, on the lowest occupied floor, over at least 48 hours with the windows shut for 12 hours beforehand.

Pulaski County Building Office, "2021 Residential New Construction Radon Requirements" (2021 VRC Appendix AF text), pulaskicounty.org; Pulaski County Unified Development Ordinance; EPA/VDH county radon zones

Mountain ridge regulation exists in Virginia law, and neither county uses it
Virginia lets a locality regulate the height and location of tall buildings on a protected mountain ridge, defined as one at 2,000 feet or more that also stands 500 feet or more above an adjacent valley floor. Pulaski County's development ordinance contains no mountain ridge provision anywhere in its 189 pages. Floyd County's comprehensive plan lists the power among tools available to it and notes the ordinance would be designed as an overlay superimposed on a preexisting base zone — and Floyd has no base zoning to superimpose one on. Neither county has adopted anything under it, which matters on a plateau that generally runs between 2,000 and 3,000 feet with Buffalo Mountain at 3,961.

Va. Code § 15.2-2295.1; Pulaski County Unified Development Ordinance (searched in full); Floyd County Comprehensive Plan, planning tools chapter

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 a build looks like

Three stages every Pulaski & Floyd Counties 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 Pulaski & Floyd Counties. Tell us what you want to build and we will draw it to them.

Where we build around Pulaski & Floyd Counties

Pulaski 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 Pulaski & Floyd Counties 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.

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.

Building in Pulaski & Floyd Counties: common questions

7 questions we get asked most often about building in Pulaski & Floyd Counties. If yours is not on the list, ask it directly.

Does Floyd County really have no zoning?
It has none. Floyd County's Land Development Code covers erosion and sediment control, floods, streets, subdivisions and a fee schedule, and contains no zoning chapter; the county's ordinance page lists no zoning ordinance; the building department's own published list of what it enforces names the building code, the erosion control ordinance, the manufactured home ordinance and the subdivision ordinance and nothing else; and the Land Division Ordinance never uses the word. In practice that means there is no district to be in, no use table to fit into, no height limit, no lot coverage cap and no rule about how a shop compares to a house. What still applies is the statewide building code, which is the same in every locality in Virginia, the Land Division Ordinance if you are creating the parcel, the three setbacks the building department publishes, the Health Department for well and septic, and the erosion and flood ordinances. The Town of Floyd is the exception: it has its own zoning ordinance, and the county routes town applications to the town for review before issuing the permit.
In Pulaski County, can the shop be bigger than the house?
Bigger in floor area, yes; taller, no. The Unified Development Ordinance's definition of an accessory building says accessory buildings and structures shall not exceed the height of the primary structure, and the district tables cap accessory buildings at 35 feet against 40 for the principal building. Nothing in those tables limits an accessory building's square footage against the house's. There is a 600 square foot figure in the ordinance, but it lives in the floodplain article's own definitions and applies to appurtenant structures in the special flood hazard area, not to accessory buildings generally. And the definition has a second half that matters more for a barndominium: where an accessory building is attached to the principal building in a substantial manner, by a wall or a roof, it is treated as part of the principal building rather than as an accessory at all.
Which numbers do I give a kit supplier for a building in each county?
Different ones, and this is the part where borrowing a neighbour's figures goes wrong. Pulaski County publishes 25 psf ground snow, 115 mph three-second gust, seismic design category B and a 24 inch frost depth, along with Severe weathering, a 16 degree winter design temperature and ice shield underlayment required. Floyd County publishes 30 ground snow load, 115 mph three-second gust, Exposure B, seismic design category B and an 18 inch frost line, and publishes no weathering, termite, decay or ice shield row at all. So the wind and seismic figures are the same across the county line and the snow load and frost depth are not. Montgomery County next door publishes 30 psf with 110 mph, which fits neither. Virginia's residential code prints that whole table blank with the instruction that each locality fills it in, so there is no state figure to fall back on and no map to read one off.
Who issues the permit if I build inside one of the towns?
It depends which town. The Town of Pulaski runs its own building department at 42 1st Street NW, where the same officer is both the certified building official and the zoning administrator, with its own fee schedule and its own portal, and it wants zoning approval of a site plan showing setbacks before it will take a building application. The Town of Dublin administers its own zoning ordinance and lists a building department in its own navigation but publishes nothing under that heading, so ring the Town Office before assuming either way. The Town of Floyd has its own zoning ordinance but not its own inspector: Floyd County issues the building permit inside the town limits, with the town reviewing the application against its zoning first. Everywhere outside those three town lines, the county building office is the one. Google's summaries tend to tell Virginians that permits are handled at the county level, and across these two counties that is right three times out of four and wrong the fourth.
How much does the karst under Pulaski County actually affect my foundation?
Legally, less than you would think; practically, it is the reason to spend money on a site investigation nobody is going to require. Pulaski's only codified sinkhole rule sits in the erosion and sediment control ordinance: where improvements increase stormwater runoff into a sinkhole, a professional geologist registered in Virginia has to certify the sinkhole can take the extra volume, and that report goes in with the erosion and sediment plan. It is triggered by a plan, and disturbances under 10,000 square feet are exempt. Nothing anywhere in the county requires a geotechnical or geophysical study before a foundation permit. What the county does say, in its comprehensive plan, is that pinnacle erosion is common in karst terrain and therefore excavation costs may vary within a relatively small area, and that small cave-ins are not uncommon after heavy rain. Half the county has bedrock mapped within a metre of the surface, and in carbonate ground that depth can change by feet across the width of a slab. Floyd County, twenty miles east, has none of this: no carbonate parent material at all in the soil survey, and rock its own plan describes as generally having load bearing capacities acceptable for development.
What will the drainfield do to my plan?
More than the foundation will, in both counties. Against the NRCS septic interpretation, not one acre in either county rates Not limited: 174,915 acres of Floyd and 143,913 acres of Pulaski rate Very limited. Slope and shallow bedrock are the dominant limits in both, and Pulaski adds slow percolation on 47,496 acres against Floyd's 7,820. Virginia sizes a drainfield at 150 gallons per day per bedroom, with no living-area band and no row for a shop, garage or barn at all, so a fourth bedroom costs drainfield area and a 3,000 square foot workshop does not. Clay lands in the slowest texture group, which pushes past the reserve-drainfield trigger. The Health Department issues the permit, not the private soil evaluator, and it has fifteen working days on a single-lot application before the permit is deemed approved. In Floyd, the Land Division Ordinance also requires a plat to be stamped with a note that no lot on it has been approved for a private wastewater system unless soil percolation testing has been done and approved — so on a newly divided parcel the drainfield question is settled on the plat, before anyone talks about a slab.
Which of the two counties has land, and what does it cost me in travel?
Both do, and they are different markets. Floyd County has 100,913 acres in farms, 41.4 percent of its land, across 668 farm operations with a median size of 71 acres and 252 operating under 50 acres, at 41 people per square mile, and it grew 2.1 percent between 2020 and 2025. Pulaski County has 74,264 acres in farms across 390 operations with a median of 80 acres, at 105 people per square mile, and shrank 0.7 percent. So Floyd has more small holdings changing hands on a county only slightly larger, and Pulaski has an interstate, two towns and Claytor Lake. Both sit in the Blacksburg-Christiansburg-Radford metro with Montgomery and Giles, which is where the demand comes from: Blacksburg town is 45,104 people around a university with essentially nothing to buy inside it. Pulaski is down I-81 from Christiansburg and Floyd is up the mountain on Route 8, and the drive is about half an hour either way.

Building in Pulaski & Floyd Counties?

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.