Building permits, zoning and land rules in Milam County, Texas

Unincorporated Milam County does not require a general residential building permit¹. An owner may therefore build the owner's own home without seeking an exemption from a general county building permit⁴. That answer does not eliminate targeted approvals: Milam County's current Development Permit application includes structural development and says work may not start before a Development Permit is issued¹. The non-subdivision application fee is $50¹. One- and two-family dwellings do not need a separate Fire Marshal permit, while covered commercial, public and larger multifamily buildings follow the county fire-code process⁴. Development in a mapped flood hazard area also requires floodplain review and any applicable engineering support¹.

Milam County Planning and Development is the first stop for targeted development, floodplain, subdivision and county-road access questions; the office is at 102 South Fannin St. in Cameron and can be reached at 254-627-1760¹⁰. The Development Permit application asks for the street address, appraisal-district ID, lot number, legal description, and distance and direction to the nearest intersecting road for unincorporated property¹. The county may issue a targeted permit after finding that the proposal conforms to the applicable county order and the fee is paid¹. Unincorporated land divisions require plat approval unless a listed exemption applies⁷. A driveway connecting to a state highway instead goes through TxDOT using Form 1058, and work on the right of way waits for the executed permit and advance notice to TxDOT¹¹.

Milam County has no zoning authority over unincorporated land, so it sets no county zoning districts, minimum dwelling size, general setbacks, lot coverage or building-height limits there^1,5. County floodplain, subdivision, septic, fire-code, access and targeted development rules still apply where their conditions are met^1,7,12. Municipal rules are different: the City of Cameron publishes its own zoning-change, special-use and zoning-map materials³. Ask the relevant city about land inside municipal limits or a regulated municipal area³. Subdivision lots designed for an on-site sewage facility must contain at least 2 acres, a septic-related lot standard rather than general zoning⁷. A qualifying division used primarily for agriculture, farming, ranching, wildlife management or timber production can be exempt from plat approval, but the platting requirements return if the qualifying use ends⁷.

The Milam County Health Department is the countywide permitting and inspection authority for on-site sewage facilities². The office is at 908 N Crockett, Suite B in Cameron and can be reached at 254-697-7039¹³. Milam County requires a permit for a system being constructed, altered, extended or repaired, and work cannot begin until the county issues an Authorization to Construct². Although Texas minimum rules describe a narrow 10-acre exemption and an emergency-repair exception, the county application says all such work in Milam County must be permitted; confirm the county requirement with the Health Department rather than relying on the state exception^2,12. After a successful inspection, the owner receives a Notice of Approval; each necessary re-inspection costs $100². Only 14.5% of county soils are rated without severe limitations for a conventional drain field, so make the site evaluation an early feasibility check¹⁴.

Milam County has no county zoning restriction on temporary camping, accessory dwellings or manufactured-home occupancy on unincorporated land, because the county has adopted no zoning ordinance⁵. That zoning answer does not override sanitation, floodplain, access, deed or development requirements that apply to a parcel or project^1,2. Outside city limits, a privately operated tract designed for two or more RVs used for dwelling or sleeping is regulated as an RV park and needs an approved Development Plan before construction⁶. Within a regulated lodging or RV development, a tiny house on wheels is treated as an RV and a tiny house on a foundation as a lodging unit⁶. A lodging or RV development designed for more than two units, RVs or tiny houses is regulated as a subdivision, and the Commissioners Court must approve its Development Plan before construction begins⁶. Permanent structures need county Development Permits, and county staff may inspect the development's infrastructure during construction⁶. Ask Planning and Development whether a proposed multi-unit layout falls within those rules¹⁰.

1. Ask Milam County Planning and Development to confirm that the parcel is unincorporated and identify targeted development, floodplain or subdivision approvals^1,10.

1. Submit the county Development Permit application before covered structural work begins; the non-subdivision application fee is $50¹.

1. Arrange the septic site evaluation and obtain the county's Authorization to Construct before septic work starts^2,13.

1. If using a private well, obtain POSGCD approval before drilling; a non-exempt well also needs drilling and operating permits^8,9.

1. Resolve access: a covered development off a county road needs a county driveway permit, while state-highway access requires TxDOT's executed permit^6,11.

1. Submit any flood-elevation or engineering material required for mapped flood-hazard development¹.

1. Build to the targeted approvals and obtain the successful septic inspection; covered fire-code buildings follow a separate inspection process^2,4.

Start with septic feasibility because only 14.5% of Milam County soils are rated without severe limits for a conventional drain field, and subdivision lots designed for an OSSF must contain at least 2 acres^7,14. Check subdivision status before closing: unincorporated land divisions generally require plat approval unless an exemption applies, and a qualifying agricultural exemption ends if the tract stops serving the qualifying use⁷. Check the flood map and access because mapped flood-hazard development needs county review and a new or changed state-highway driveway needs TxDOT approval^1,11. Every Milam County well is within the Post Oak Savannah Groundwater Conservation District: an exempt household or livestock well needs registration and approval before drilling, while a non-exempt well needs drilling and operating permits^8,9. Milam County receives about 38 inches of precipitation annually, while severe drought occurs in about 20.4% of years¹⁴.