Baylor County, TX — 2026 Building Permit Guide

On this page 5

§ 01

Permit authority

Baylor County (primarily OSSF and Floodplain Administration)

Street address

Baylor County Courthouse, 109 N Washington, Seymour, TX 76380

Phone

940-889-3553 (main); 817-723-5398 (OSSF); 940-256-0908 (floodplain)

claycountyossf@gmail.com

Coverage

Unincorporated areas of Baylor County. The county does not publish a general countywide building permit program; verified controls are limited to OSSF/septic permitting and floodplain administration.

Online portal

TCEQ OARS (Authorized Agents Registry)

Website

Department website

Additional resources

§ 02

When a permit is required

Permit triggers and exempt work for Baylor County

No public evidence found of a general unincorporated-county building permit program. Verified permit controls are narrower: OSSF permits are generally required before construction, installation, repair, extension, or alteration of an on-site sewage facility unless an exemption applies under state rules. Floodplain permitting/approval should be confirmed for work in flood hazard areas.

Scope of work

Permit?

Under TCEQ state law, OSSF permits may be exempt under the "10 acre rule" if all rule conditions are met.

Exempt

Emergency repairs do not require an OSSF permit if reported to the permitting authority in writing within 72 hours after repairs begin.

Exempt

Exempt Under TCEQ state law, OSSF permits may be exempt under the "10 acre rule" if all rule conditions are met.
Exempt Emergency repairs do not require an OSSF permit if reported to the permitting authority in writing within 72 hours after repairs begin.

Note: No public Baylor County exempt-work list for a general building permit program exists because no public countywide general building permit program was located.

Owner-builder: TCEQ states OSSF work may be performed directly by the homeowner when it is the homeowner's single-family residence, subject to state OSSF requirements and local authority rules.
Contractor requirements: TCEQ states OSSF installers must be licensed or registered by TCEQ.

Source: Baylor County (primarily OSSF and Floodplain Administration) ↗

§ 03

Application process

Application → plan check → issuance → inspection → final

01

Verify that the parcel is in unincorporated Baylor County and not within City of Seymour limits.
02

For OSSF/septic projects, verify whether the tract falls in the Millers Creek Reservoir service area, as that area is handled by North Central MWA instead of Baylor County.
03

For an OSSF/septic project, contact the Baylor County Authorized Agent listed in TCEQ OARS.
04

Obtain a site evaluation and prepare planning materials as required by TCEQ OSSF rules and the local authorized agent.
05

Submit the OSSF permit application to the authorized agent and obtain authorization before installation, repair, extension, or alteration.
06

For development in mapped flood hazard areas, contact the county floodplain administrator before work.

Source: Baylor County (primarily OSSF and Floodplain Administration) ↗

§ 04

Required inspections

Scheduling and sequence

Inspection hours: Baylor County OSSF Authorized Agent: Monday through Friday, 8:00 AM to 5:00 PM

Typical sequence: TCEQ OSSF guidance indicates local authorized agents inspect OSSF installations for compliance.

Source: Baylor County (primarily OSSF and Floodplain Administration) ↗

§ 05

Frequently asked

Common questions about unincorporated Baylor County permits

01 Do I need a building permit in unincorporated Baylor County, TX? ▸

02 How do I apply for a building permit in unincorporated Baylor County, TX? ▸

To apply for a building permit in unincorporated Baylor County, TX, follow these steps: 1. Verify that the parcel is in unincorporated Baylor County and not within City of Seymour limits. 2. For OSSF/septic projects, verify whether the tract falls in the Millers Creek Reservoir service area, as that area is handled by North Central MWA instead of Baylor County. 3. For an OSSF/septic project, contact the Baylor County Authorized Agent listed in TCEQ OARS. 4. Obtain a site evaluation and prepare planning materials as required by TCEQ OSSF rules and the local authorized agent. 5. Submit the OSSF permit application to the authorized agent and obtain authorization before installation, repair, extension, or alteration. 6. For development in mapped flood hazard areas, contact the county floodplain administrator before work.

03 What work is exempt from building permits in unincorporated Baylor County, TX? ▸

Not all construction work requires a permit in unincorporated Baylor County, TX. The following work is generally exempt: Under TCEQ state law, OSSF permits may be exempt under the "10 acre rule" if all rule conditions are met.; Emergency repairs do not require an OSSF permit if reported to the permitting authority in writing within 72 hours after repairs begin.. Note: No public Baylor County exempt-work list for a general building permit program exists because no public countywide general building permit program was located. When in doubt, confirm with the local building department before starting work.

last verified April 2026 source Baylor County (primarily OSSF and Floodplain Administration) ↗ entry id permits/texas/baylor/unincorporated

Report a correction

Educational reference. Permit rules and fees change — confirm current requirements directly with Baylor County (primarily OSSF and Floodplain Administration) before applying. Jaspector is not legal advice.

Unincorporated Baylor County