Unincorporated Grant County, West Virginia has no county zoning, so no county rule sets minimum lot size, setbacks or home size12. Grant County does not publish a clear residential building-permit requirement, though the County Assessor lists building permits among its responsibilities34. Septic and well permits come from the Grant County Health Department, and a septic permit comes before any building permit5.
At a glance
- Building permit
- Countywide residential requirement unconfirmed; ask the Grant County Assessor before work begins34
- Zoning
- No county zoning in unincorporated Grant County; subdivision rules apply when land is divided16
- Septic
- A Grant County Health Department permit is required to install an individual sewage system5
- Private well
- Obtain a local-health-department permit before drilling, modifying or abandoning an individual well7
- Owner-builder
- Personal work by an owner or occupant is exempt from contractor licensure, not from applicable permits or codes8
- RV or tiny home
- No county zoning rule restricts either on unincorporated land; septic permits still apply95
- Subdivision
- Planning Commission approval and a subdivision permit apply to covered divisions of unincorporated land6
Who to call
Building permits
The official county page lists building permits among the Assessor's responsibilities; contact the office to confirm requirements for a project.
5 Highland Avenue Petersburg, WV 26847
Septic permits
Grant County Health Department
Individual onsite sewage and private-water-well permits and environmental-health questions.
739 North Fork Highway Petersburg, WV 26847
Planning & zoning
Central county contact for routing zoning, Planning Commission, subdivision and floodplain questions.
administrator@grantcountywv.org
5 Highland Avenue Petersburg, WV 26847
Contact details are copied from each office’s official page and were checked against it on October 9, 2026.
Off-grid gear
Going off-grid in Grant County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Do you need a building permit in Grant County, West Virginia?
Grant County's countywide residential building-permit requirement could not be confirmed from the official material reviewed3. The official Grant County Assessor page includes building permits in its list of responsibilities, but it does not identify which work needs a permit or state the application process4. Call the Assessor at 304-257-1050 before clearing, excavating, placing a manufactured home or starting construction4. West Virginia's State Building Code has force only in counties and municipalities that adopt it; Grant County's adoption status remains unconfirmed103. State fire inspections generally exclude houses occupied by one or two families, but that exclusion does not answer the county-permit question11. Buildings used primarily for agriculture are exempt from the State Building Code, State Fire Code and adopted county or municipal building codes10.
Who handles Grant County building permits, and how do you reach the office?
Start with the Grant County Assessor, whose official county page lists building permits among the office's responsibilities4. The office is at 5 Highland Avenue, Petersburg, WV 26847, and its phone number is 304-257-10504. Because the published page does not state the permit trigger, fees, required plans or inspection sequence, ask for a project-specific determination before work begins3. For Planning Commission, subdivision or floodplain questions, the Grant County Administrator is the county's central point for constituent information requests12. The Administrator can be reached at 304-257-4422 or administrator@grantcountywv.org at the same courthouse address12. If the parcel is inside an incorporated municipality, also ask that municipality about its own zoning and building rules because municipal rules are distinct from county rules; septic and well permits still come from the Grant County Health Department131415.
Does Grant County have zoning?
Unincorporated Grant County has no county zoning, and the county's own plan says there is no need or desire for zoning in the foreseeable future116. No county rule sets minimum lot size, setbacks, building height or minimum home size on unincorporated land21718. A municipality may still zone land inside its own limits, and we could not confirm which Grant County towns do, so ask the town if a parcel lies inside one15. A separate, confirmed rule applies when land is divided: Grant County's subdivision ordinance governs covered subdivision and conveyance of real estate in unincorporated Grant County and requires a subdivision permit and Planning Commission approval unless an exemption applies6. State law requires locally adopted subdivision ordinances to include lot-size standards, but it creates no single statewide numeric minimum lot size19. A parcel may also carry deed restrictions or easements that are separate from government zoning, so review the recorded title documents before purchase.
How do septic permits and wells work in Grant County?
The Grant County Health Department requires homeowners and installers to obtain a permit before installing an individual sewage system, and the septic permit must be obtained before any building permit is issued5. Call Environmental Services at (304) 257-9768 or visit 739 North Fork Highway, Petersburg, WV 2684713. Ask about site evaluation, system design, installer requirements and inspections because the complete county inspection sequence remains unconfirmed5. Only 2.5% of mapped Grant County soils are rated without severe limitations for a conventional septic drain field, so settle septic feasibility before choosing a house site20. That countywide soil measure does not decide an individual parcel. West Virginia also requires a local-health-department permit before drilling, modifying or abandoning an individual water well, and a licensed well driller must perform the drilling7. In a subdivision using individual onsite sewage, health-department subdivision approval precedes well and sewage installation permits21.
Can you live in an RV or tiny home on land in Grant County?
Unincorporated Grant County has no county zoning, so no county rule restricts long-term RV living, temporary camping, tiny homes, accessory dwellings or manufactured homes on a parcel9. Wastewater is the practical limit: homeowners and installers must obtain an onsite-sewage permit from the Grant County Health Department, and a tiny home or RV used as a dwelling still needs a lawful sewage plan513. Off-grid sanitation alternatives such as composting toilets or holding tanks remain unconfirmed; ask Environmental Services what the department will approve before relying on one13. A building permit question may still apply to a permanent structure, so ask the Assessor43. An owner who personally performs construction is exempt from West Virginia contractor licensure, but that exemption does not waive applicable permits, codes, inspections or occupancy requirements8.
Building a home in Grant County: what are the steps?
- Call the Grant County Assessor to learn whether the proposed work needs a building permit and what application materials apply43.
- Confirm the parcel is outside any town limits, since unincorporated Grant County has no county zoning, and ask the Grant County Administrator about subdivision rules and floodplain review121.
- Contact the Grant County Health Department early for septic and well approvals, especially because only 2.5% of mapped soils lack severe conventional drain-field limitations520.
- If the land is being divided, obtain the required Planning Commission approval and subdivision permit before conveying covered lots6.
- Obtain WVDEP construction-stormwater authorization if disturbance reaches 1 acre or is part of a larger common plan22.
- Obtain a free Division of Highways permit before building a new driveway onto a state highway23.
- Complete any required floodplain review before development in a regulated floodplain24.
What should you check before buying land in Grant County?
Confirm a buildable site, not just total acreage. Only 34.9% of Grant County land has a slope of 15% or less, and 77.3% is wooded, so inspect the likely house pad, driveway grade, clearing needs and solar exposure2526. Septic deserves early attention because only 2.5% of mapped soils are rated without severe limitations for a conventional drain field20. Check whether a proposed driveway meets a state highway; a new connection requires a Division of Highways permit23. Ask the county about floodplain permitting because every West Virginia county participates in the federal flood-insurance program and regulates floodplain development24. Verify whether the tract is a lawful existing parcel or needs subdivision approval6. Finally, budget using parcel-specific tax records: the countywide effective property-tax rate is about 0.3%, and the median annual property-tax bill is about $5552728.
Watch-outs
- The Assessor's page mentions building permits but does not say which residential projects require one; call before starting work43.
- A septic permit must be obtained before any building permit is issued in Grant County5.
- Unincorporated Grant County has no county zoning, but covered subdivisions of unincorporated land still require Planning Commission review, and towns may zone their own land16.
- Only 2.5% of mapped county soils are rated without severe limitations for a conventional septic drain field20.
Sources
- Grant County Plan, quoted and re-checked
- Grant County Plan, quoted and re-checked
- 2023 West Virginia State Hazard Mitigation Plan (2026 county census)
- Grant County Assessor (grantcountywv.org)
- Environmental Services: Individual Onsite Sewage and Water Program (2026 county census)
- Grant County Subdivision Ordinance, quoted and re-checked
- Water Wells (West Virginia statewide rule), quoted and re-checked
- West Virginia Code §30-42-6. Necessity for license; exemptions (West Virginia statewide rule), quoted and re-checked
- West Virginia law on county zoning and building authority
- West Virginia Code §15A-11-5, Promulgation of rules and statewide building code (West Virginia statewide rule), quoted and re-checked
- Fire & Life Safety Inspections (West Virginia statewide rule), quoted and re-checked
- Grant County Administrator (grantcountywv.org)
- Grant County Health Department (gcwestvirginia.com)
- West Virginia Code §7-1-3n. Authority of certain counties as to building and housing codes; state building code (West Virginia statewide rule), quoted and re-checked
- West Virginia Code §8A-7-1. Authority for zoning ordinance (West Virginia statewide rule), quoted and re-checked
- Grant County Plan, quoted and re-checked
- Grant County Plan, quoted and re-checked
- Grant County Plan, quoted and re-checked
- West Virginia Code §8A-4-2. Contents of subdivision and land development ordinance. (West Virginia statewide rule), quoted and re-checked
- Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
- Subdivision On-Site Sewage Systems, quoted and re-checked
- Construction Stormwater General Permit (West Virginia statewide rule), quoted and re-checked
- Encroachment Permits (West Virginia statewide rule), quoted and re-checked
- Floodplain Permits (West Virginia statewide rule), quoted and re-checked
- Share of land at 15% slope or less: Bolthole Index county data
- Wooded share of land: Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
Written October 9, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.