Anyone building inside St. Marys, West Virginia city limits needs a city building permit first1, and the city has its own zoning code with districts2. Septic tanks, privies and cesspools are prohibited inside the city except where the sewer article allows them3. Outside city limits in Pleasants County, the rules differ; see the Pleasants County page.
At a glance
- Building permit
- Required from the city before building, altering or adding to a building1
- Zoning
- City zoning code with districts2
- Septic
- Septic tanks and privies prohibited in the city, subject to exceptions; public sewer connection required where a sewer abuts the property34
- Wells
- Well permit required statewide, obtained jointly by driller and owner5
- Owner-builder
- State contractor-license exemption for owners; it does not waive building permits6
Who to call
Building permits
City of St. Marys Building/Permitting (City Manager)
City building permit applications, reviewed by the City Manager
Septic permits
Mid-Ohio Valley Health Department, Pleasants County Office
Onsite sewage (septic) permits and inspections for Pleasants County
605 Cherry Street, St. Marys, WV 26170
Contact details are copied from each office’s official page and were checked against it on October 15, 2026.
Off-grid gear
Going off-grid in St. Marys 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 St. Marys, WV?
Yes. St. Marys city code says no one may construct, alter or add to any building without first getting a permit from the city1. The City of St. Marys says anyone looking to build within the city limits must first apply for a building permit7.
The fee is $20.00 for the first $10,000 of the project plus $1.00 for every $1,000 over that7. The application is reviewed by the City Manager, and work must wait until the permit is approved7. Call the City Manager at (304) 684-2401 with questions7.
Who issues building permits in St. Marys, and what stays with Pleasants County?
Inside St. Marys, the city issues building permits1. The Pleasants County floodplain office is separate: floodplain development permits run through the local county, town or city floodplain permit officer, so a lot near water may need a second approval8.
For land outside the city, use the Pleasants County page; the city's rules do not apply there. West Virginia has no statewide building code requirement, and a community that adopts a building code must use the State Building Code9. Whether St. Marys has adopted it, and who inspects, we could not confirm; ask City Hall.
Does St. Marys have zoning, and what does it mean for RVs, tiny homes and lot size?
St. Marys has a Planning and Zoning Code with a chapter on zoning regulations and an article on districts2. A West Virginia municipality's zoning ordinance covers its entire jurisdiction10.
We could not confirm the district rules for lot size, setbacks, minimum dwelling size, RV or tiny-home occupancy, or manufactured homes. Ask City Hall which district a parcel is in before you buy. West Virginia law allows at least one accessory dwelling unit by right on a lot with a single-family dwelling inside a municipality, subject to the statutory definition11; confirm with the city how that applies to a given lot.
How do septic permits work inside St. Marys?
Inside city limits, no one may build or maintain a privy, privy vault, septic tank or cesspool for human waste, except as Article 935 of the city code allows3. Owners of occupied buildings that abut a street or right of way with a public sanitary sewer must connect at their own expense within 30 days after official notice4. A property annexed into the city without a sewer connection is exempt unless the City Manager finds it a nuisance or hazard4.
In Pleasants County generally, septic permits come from the Mid-Ohio Valley Health Department, which serves six counties12, and the state requires a written permit before any sewage system is installed13. Who issues septic permits for an unsewered lot inside the city we could not confirm; call the health department's Pleasants County office at 304-684-246114.
Building a home in St. Marys: the steps, in order
- Ask City Hall for the zoning district of the parcel and whether your use is allowed there2.
- Check whether the lot touches a public sewer; if so, plan to connect4.
- If the lot is near water, ask about floodplain development approval8.
- Apply to the City Manager for the building permit and pay the fee7.
- If you will drill a water well, a permit is required, obtained jointly by the driller and owner, with an application at least 15 days before drilling5.
- A new driveway onto a state highway needs a state permit, free from any Division of Highways office15.
What to check before you buy in St. Marys
Owners who personally do construction on their own structure are exempt from contractor licensing, but the exemption does not waive building permit or code requirements6. Contractors working in the city also need a city business license7.
A subdivision of land inside the city requires Planning Commission approval before recording16. Pleasants County's effective property tax rate is 0.6%17, and the median property tax bill is $752 a year18. These figures are county-level.
Watch-outs
- We could not confirm the zoning district rules (lot size, setbacks, RV and tiny-home occupancy), so ask St. Marys City Hall at (304) 684-2401 before buying7.
- We could not confirm who issues septic permits for unsewered lots inside city limits; the city prohibits septic tanks except as its sewer article allows3.
- Building-code adoption and certificates of occupancy inside the city were not confirmed; ask the City Manager7.
Sources
- Article 1705 Building Permits (St. Marys), quoted and re-checked
- Saint Marys, WV Laws (St. Marys), quoted and re-checked
- codelibrary.amlegal.com (St. Marys), quoted and re-checked
- 935.01 Connection to Sanitary Sewer Required (St. Marys), quoted and re-checked
- 64CSR19 Water Well Regulations (St. Marys), quoted and re-checked
- West Virginia Code §30-42-6. Necessity for license; exemptions (West Virginia statewide rule), quoted and re-checked
- City of St. Marys Building/Permitting (City Manager) (stmarys.wv.gov)
- Floodplain Permits (West Virginia statewide rule), quoted and re-checked
- 2023 West Virginia State Hazard Mitigation Plan (West Virginia statewide rule), quoted and re-checked
- West Virginia Code §§8A-7-1 and 8A-7-2 (West Virginia statewide rule), quoted and re-checked
- West Virginia Code §8-42-1. Definitions (West Virginia statewide rule), quoted and re-checked
- movhd.com, quoted and re-checked
- West Virginia Code §16-1-9 (West Virginia statewide rule), quoted and re-checked
- Mid-Ohio Valley Health Department, Pleasants County Office (movhd.com)
- Encroachment Permits (West Virginia statewide rule), quoted and re-checked
- 1311.01 Approval Required Prior to Recordation (St. Marys), quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
Written October 15, 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.