Unincorporated Marion County, West Virginia appears not to require a general building permit for a home, but covered floodplain development does require a county floodplain permit12. Inside Fairmont, the city issues building permits and enforces its own zoning34. Septic permits and water well permits, in the city or outside it, come from the Marion County Health Department56.
At a glance
- Building permit
- Appears not required for a home in unincorporated Marion County; confirm unusual projects1
- Zoning
- No county program identified; Fairmont has its own zoning code78
- Septic permit
- Site approval and a construction permit are required through the County Health Department910
- Water well
- A County Health Department permit is required6
- Owner-builder
- An owner or occupant may personally perform work without a contractor license1112
- RV or tiny home
- Long-term occupancy rules could not be confirmed; ask the County Commission and Health Department7
- Floodplain development
- County permit required before covered work begins2
Who to call
Septic permits
Marion County Health Department — Environmental Health
On-site sewage site review, construction permits and final inspections for Marion County
Floodplain permits
Marion County Floodplain Office
Floodplain determinations and floodplain development permit applications for Marion County
50 CENTERVIEW DRIVE FAIRMONT WV 26554
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 Marion 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 Marion County, West Virginia?
For an ordinary home in unincorporated Marion County, a general county building permit appears not to be required1. We could not confirm a county order adopting the State Building Code, which has force only in counties and municipalities that adopt it1314. Inside Fairmont, the city administers adopted building codes and issues building permits; its published fee is 2% of job cost with a $60 minimum3. Covered floodplain development requires a county floodplain permit before work begins2. State Fire Marshal plan review, construction inspections, final inspection and occupancy permitting can apply to covered projects, but the office does not have jurisdiction over one-family or two-family dwellings15. Owner-builders should note that West Virginia's contractor-licensing exclusion for a person personally building on land the person owns or leases is not an exemption from any building permit, inspection, zoning or septic permit requirement16.
Who is the Marion County building department, and who issues permits?
Marion County does not identify a general building department for unincorporated residential construction, which is consistent with the county's apparent lack of a general home-building permit requirement1. Inside Fairmont, the Building Inspection and Rental Registration Department administers adopted codes and issues building permits3. The Marion County Health Department handles on-site sewage site review, construction permits and final inspections; its number is 304.366.336017. The Marion County Floodplain Office handles floodplain questions and applications at 50 CENTERVIEW DRIVE FAIRMONT WV 26554, and its number is 304-366-019618. A driveway connecting to a state highway requires a Division of Highways encroachment permit before construction19. County-road driveway requirements could not be confirmed, so ask the County Commission before cutting access onto a county-maintained road.
Does Marion County have zoning?
Unincorporated Marion County appears to have no county zoning program, but we could not confirm an enacted county zoning ordinance or map; ask the County Commission about the parcel7. Fairmont has a zoning ordinance and a hybrid zoning code addressing matters such as setbacks, parking, building heights, materials and architectural features48. Inside Fairmont, new buildings, additions, sheds, porches, driveways and fences all require review and approval by the city's Planning and Development Department20. Fairmont's rules apply inside city limits and do not establish rules for unincorporated land8. No countywide minimum dwelling size, setback, building-height limit, lot-coverage limit or numeric minimum lot size could be confirmed for unincorporated Marion County. State law does not create one uniform numeric lot minimum for every parcel21. Outside municipalities or urban areas, local zoning may not prevent an owner from fully using a tract of any size for a qualifying farm or agricultural operation22.
How do septic and well permits work in Marion County, West Virginia?
A Marion County on-site sewage project starts with a certified installer who performs the percolation test, evaluates the site and submits the application for a new system, modification or repair10. Septic permits are issued by the Marion County Health Department, not by a city building office5. The Health Department sanitarian then evaluates the proposed work, and the department issues a construction permit only after site approval1710. After installation or repair, the certified installer must request a final inspection before covering the system1723. Only about 1.3% of Marion County soils are rated without severe limitations for a conventional drain field, so complete the site evaluation before choosing a house site or closing on land24. Drilling, modifying or abandoning an individual water well requires a local health-department permit, and the Marion County Health Department handles well evaluations, permits and inspections256. The county's reviewed fee information lists a $140 water-well permit fee6.
Can you live in an RV or tiny home on land in Marion County?
Marion County's rules for long-term RV occupancy, temporary private-land camping and tiny-home occupancy could not be confirmed. The apparent absence of county zoning does not by itself answer sanitation, floodplain, utility or municipal-code questions72. Ask the County Commission about land use and the Marion County Health Department about the proposed wastewater arrangement before buying or moving a unit onto the parcel17. A separate rule applies when land is used as a mobile-home park: a site with at least 4 mobile homes used as dwellings needs state and local health-department approval, with the application submitted at least 45 days before agency action is desired26. That mobile-home-park rule does not settle the legality of one RV, one tiny home or one manufactured home on a private parcel26. Municipal rules may also apply inside Fairmont or another city because municipal zoning is separate from county zoning27.
What are the steps to build a home in Marion County, West Virginia?
- Confirm whether the parcel is inside Fairmont or another municipality before relying on Marion County's apparent lack of a general home-building permit13.
- For unincorporated land, ask the County Commission to confirm that no recorded building-code order or parcel-specific land-use rule applies.
- Have a certified installer evaluate the septic site and submit the on-site sewage application to the Marion County Health Department10.
- Obtain Health Department site approval and the septic construction permit28 before installation, then arrange the final inspection before covering the system1723.
- Obtain a local health-department permit before drilling, modifying or abandoning an individual water well25.
- Ask the Floodplain Office whether the site is regulated; applications must be filed in writing, in duplicate, on county forms, and fees are set by the Floodplain Administrator182930.
- Obtain a Division of Highways encroachment permit before building a driveway connection to a state highway19.
- If land disturbance reaches 1 acre or is part of a larger common plan, obtain state construction-stormwater authorization31.
What should you check before buying land in Marion County?
Start with buildability: only about 24% of Marion County land has a slope of 15% or less, about 82.8% is wooded, and only about 1.3% of soils avoid severe conventional drain-field limitations323324. Those constraints make a septic evaluation, surveyed access and a realistic grading plan more important than the county's apparent lack of general zoning. Ask the Floodplain Office for a parcel-specific determination because covered floodplain development needs a permit before work begins182. Annual precipitation averages about 46.2 inches, so inspect drainage, stream crossings and wet-weather access34. Farmland value averages about $3,858 per acre, while the typical home value is about $171,7363536. The effective property-tax rate is about 0.6%, and the median annual property-tax bill is about $9893738. A state-highway entrance requires Division of Highways approval before construction19.
Watch-outs
- Marion County appears not to require a general home-building permit in unincorporated areas, but no county adoption order or explicit permit statement was confirmed; ask the County Commission about unusual work113.
- A floodplain permit is required before covered development begins; the Floodplain Administrator sets the fee, and starting first can double the specified fee230.
- Only about 1.3% of Marion County soils are rated without severe limitations for a conventional septic drain field, so test the exact homesite before purchase24.
- Long-term RV and tiny-home occupancy rules could not be confirmed; ask the County Commission and the Health Department before relying on either use717.
- West Virginia's owner-builder contractor-licensing exclusion does not waive building permits, septic permits or zoning approval where they apply16.
Sources
- Marion County WV (official county government) (2026 county census)
- Marion County WV Floodplain Ordinance, quoted and re-checked
- Building Inspection & Rental Registration, quoted and re-checked
- Planning & Development, quoted and re-checked
- Sewage/Septic Systems, quoted and re-checked
- Inspections, quoted and re-checked
- Marion County WV (official county government) (2026 county census)
- Zoning Code, quoted and re-checked
- Sewage/Septic Systems (2026 county census)
- Sewage/Septic Systems, quoted and re-checked
- West Virginia Code §30-42-3. Definitions (2026 county census)
- West Virginia Code §30-42-6. Necessity for license; exemptions (West Virginia statewide rule), quoted and re-checked
- West Virginia Code §15A-11-5, Promulgation of rules and statewide building code (West Virginia statewide rule), quoted and re-checked
- 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
- FAQ, quoted and re-checked
- West Virginia Code §30-42-3. Definitions, quoted and re-checked
- Marion County Health Department — Environmental Health (marionlhdwv.org)
- Marion County Floodplain Office (marioncountywv.com)
- Encroachment Permits (West Virginia statewide rule), quoted and re-checked
- Planning & Development, 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
- West Virginia Code §8A-7-10. Effect of enacted zoning ordinance., quoted and re-checked
- Sewage/Septic Systems, 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
- Water Wells (West Virginia statewide rule), quoted and re-checked
- Manufactured Home Communities, quoted and re-checked
- West Virginia Code §8A-7-1. Authority for zoning ordinance (West Virginia statewide rule), quoted and re-checked
- Sewage/Septic Systems | Environmental | Marion County WV Health Department, quoted and re-checked
- Marion County WV Floodplain Ordinance, quoted and re-checked
- Marion County WV Floodplain Ordinance, quoted and re-checked
- Construction Stormwater General Permit (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
- Annual precipitation: Bolthole Index county data
- Farmland value per acre (USDA census): Bolthole Index county data
- Typical home value (Zillow): 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.