Building permits, zoning and septic rules in Montague County, Texas

Unincorporated Montague County, Texas does not require a general residential building permit¹. A home, cabin, barn or shop still needs any applicable septic and floodplain approvals; the absence of a general building permit does not waive those requirements^5,7. Texas exempts qualifying owner-performed electrical, plumbing, and air-conditioning or refrigeration work on the owner's own residence or homestead from the relevant state trade-license requirements, but the exemption does not cover every construction trade¹⁰.

Montague County does not run a general building-permit program for an ordinary home in an unincorporated area¹. Inside Bowie, city building codes and city zoning apply within the city's jurisdiction^3,11. Septic authority does not move to the city: the Montague County Sewage Inspector handles septic permits countywide as TCEQ's authorized local agent^1,4. For a floodplain development permit, submit the application to the local Floodplain Administrator; because the county does not publish a separate contact, start with the Montague County Judge's office^5,12. Floodplain applications and final plats carry a minimum $275 engineering-review fee, which can increase if more work is needed⁵. A driveway connecting to a state highway requires a TxDOT driveway permit using Form 1058¹³.

Unincorporated Montague County has no county zoning ordinance¹. Bowie sets its own zoning inside city limits, with district regulations that must be checked for the proposed use³. Bowie's Board of Adjustment and Appeals handles interpretations and relief relating to city zoning ordinances¹⁴. Bowie's Planning and Zoning Commission makes recommendations on rezoning, platting and subdivision within the city and its extraterritorial jurisdiction; that role does not establish countywide zoning¹⁵. Bowie has adopted the 2018 International Residential Code and other international codes, plus the 2017 National Electrical Code¹¹. Septic permits remain with the Montague County Sewage Inspector countywide⁴.

Montague County itself, not the state, permits on-site sewage facilities (OSSFs): the county's Sewage Inspector reviews applications as TCEQ's authorized local agent^1,4. Off-grid sanitation is not permit-free: an OSSF needs approved paperwork, a site and soil evaluation, an approved design, a plat or survey, the permit fee and inspection before coverup⁷. The county sets a minimum lot size for a system serving a single-family residence: 1 acre with public water, or 2 acres with a private well⁷. A conventional system permit costs $410, and an aerobic system permit costs $510; aerobic systems also need a maintenance-provider contract and a notarized affidavit filed with the County Clerk⁷. Any change to the structure, system components or ownership may require a new permit⁷. Only 14.7% of Montague County's soils are rated free of severe limits for a conventional drain field, so budget for the evaluation early¹⁶.

Unincorporated Montague County has no county zoning rule restricting RVs, tiny homes, accessory dwellings or temporary camping on an owner's lot, or setting minimum home size, setbacks, lot coverage or building height⁹. A separate Montague County rule covers manufactured-home rental communities with 2 or more spaces rented or leased for under 60 months without a purchase option; that rule does not establish restrictions for a single manufactured home on its owner's lot¹⁷. An off-grid OSSF still requires county-approved paperwork, evaluation, design, fees and inspection before coverup⁷. Development in a mapped Special Flood Hazard Area also needs a county floodplain permit⁵.

1. Establish whether the parcel is unincorporated or inside Bowie, where city zoning and adopted building codes apply^1,3,11.
2. Confirm the OSSF minimum lot size: 1 acre with public water or 2 acres with a private well per single-family residence⁷.
3. Arrange a site and soil evaluation and apply through the Montague County Sewage Inspector before installing septic components^1,7.
4. Obtain a county Floodplain Development Permit before development in a mapped Special Flood Hazard Area⁵.
5. Before dividing unincorporated land, ask the County Judge's Office about subdivision compliance and whether the conditional agricultural plat exemption applies^6,8,12.
6. Obtain a TxDOT driveway permit for access to a state highway¹³.

Septic soils deserve early attention: only 14.7% of Montague County's land is free of severe limitations for a conventional drain field, and the county's 1-or-2-acre OSSF minimum can rule out very small parcels^7,16. Water matters too: annual precipitation runs about 35.7 inches, with severe drought in 23.8% of years¹⁶. Check FEMA flood maps before buying because development in a mapped Special Flood Hazard Area needs a county Floodplain Development Permit⁵. Montague County regulates unincorporated subdivisions, including surveys, water, wastewater, drainage, roads and emergency access⁶. Texas exempts a qualifying agricultural, farm, ranch, wildlife-management or timber-production division outside municipal limits from county platting if no part is laid out for public use; platting requirements return when the qualifying primary use ends⁸. The exemption does not waive septic, floodplain, roadway or applicable municipal/ETJ requirements⁸. For property inside Bowie, account for municipal zoning and adopted city building codes, while arranging any septic permit with the Montague County Sewage Inspector^3,4,11. Property tax runs about 1.0% effectively, with a median bill near $1,802 a year, against a typical home value around $256,517¹⁶.