On this page 6
§ 02
When a permit is required
Permit triggers and exempt work for Colorado County
Development permits are required for construction in unincorporated Colorado County. OSSF permits are required for all septic installation or repairs. The county also regulates floodplain development and subdivision-related development. No countywide general building permit program for every residential or commercial structure was found.
Note: Public records do not support assuming permit-free status for all construction. Instead, they support narrower county controls centered on development permits, floodplain compliance, OSSF, subdivision review, and related county road or drainage regulation.
Required documents
- County development permit application (owner-completed)
- Proof of ownership (deed first page or current property tax receipt)
- Proposed construction details
- Location details
- Floodplain materials if applicable
- OSSF application and design materials if septic work required
- Site evaluation and soil assessment for OSSF
- Affidavit and maintenance contract for aerobic OSSF systems
- Building code
- No countywide adopted building code and general building-permit enforcement program for all unincorporated construction was established. County regulates floodplain, development, subdivision, and OSSF instead.
- Permit validity
- Green permit valid for one year to start construction. OSSF permits valid for one year from issuance.
- Owner-builder
- County forms require the property owner to fill out and sign the development permit and OSSF applications.
- Contractor requirements
- OSSF site evaluators, sanitarians, engineers, and installers must be appropriately licensed where their work is required.
§ 03
Application process
Application → plan check → issuance → inspection → final
- 01 Determine which county approval actually applies. County controls support development/911 addressing permits, floodplain review, OSSF permits, subdivision review, and county road or drainage controls rather than general building permits.
- 02 For a residential or commercial development permit, the property owner completes the county development permit application and provides proof of ownership such as the first page of the deed or a current property tax receipt.
- 03 If floodplain conditions apply, provide any additional floodplain materials required by the county.
- 04 Pay the county permit fee. Residential development permit: $30.00; commercial development permit: $350.00; 911 sign: $10.00; mailed sign: additional $10.00.
- 05 After the county receives completed paperwork and payment, it begins processing the 911 address and/or development permit. The county will issue a confirmation letter for the 911 address and a green permit plaque or sign for development that must remain visible from the road during construction.
- 06 If the project needs an OSSF permit, the landowner must complete the OSSF application, pay the OSSF fee ($250.00 residential; $350.00 commercial), obtain soil and site evaluation work from appropriately licensed professionals, submit design materials, and wait for county approval before construction begins.
- 07 For OSSF work, the installer must request final inspection before covering the system. The county will issue a final permit to operate after successful inspection.
§ 04
Fee schedule
Colorado County building permit fees
Fee type
Amount
01
Minimum permit fee
$30.00 (residential development) or $350.00 (commercial development)
02
Plan check fee
No separate plan-check fee identified. Commercial projects may require engineering review and drainage review costs paid directly to the engineering firm if such review is required.
03
Permit fee formula
Flat fees: Residential development permit $30.00; Commercial development permit $350.00; 911 sign $10.00; mailed sign additional $10.00; OSSF permitting $250.00 residential or $350.00 commercial.
Fees change periodically. Confirm at the official fee schedule ↗ before budgeting.
§ 05
Required inspections
Scheduling and sequence
How to schedule
- For OSSF: installer must notify county permit office and request final inspection. Contact: 979-732-2435 (phone)
- Scheduling deadline
- For OSSF work, final inspection must be completed before system is covered.
Typical sequence: For OSSF: application, fee payment, soil and site evaluation, design approval, permit to construct, installation, final inspection before cover, then final permit to operate after successful inspection. For development and floodplain permits, no city-style staged building inspection program was described.
§ 06
Frequently asked
Common questions about unincorporated Colorado County permits
01 Do I need a building permit in unincorporated Colorado County, TX? ▸
Development permits are required for construction in unincorporated Colorado County. OSSF permits are required for all septic installation or repairs. The county also regulates floodplain development and subdivision-related development. No countywide general building permit program for every residential or commercial structure was found.
02 How much does a building permit cost in unincorporated Colorado County, TX? ▸
Building permit fees in unincorporated Colorado County, TX are set by the local building department and vary by project type and valuation. The minimum permit fee is $30.00 (residential development) or $350.00 (commercial development). Fees are calculated as: Flat fees: Residential development permit $30.00; Commercial development permit $350.00; 911 sign $10.00; mailed sign additional $10.00; OSSF permitting $250.00 residential or $350.00 commercial.. Plan check fee: No separate plan-check fee identified. Commercial projects may require engineering review and drainage review costs paid directly to the engineering firm if such review is required..
03 How do I apply for a building permit in unincorporated Colorado County, TX? ▸
To apply for a building permit in unincorporated Colorado County, TX, follow these steps: 1. Determine which county approval actually applies. County controls support development/911 addressing permits, floodplain review, OSSF permits, subdivision review, and county road or drainage controls rather than general building permits. 2. For a residential or commercial development permit, the property owner completes the county development permit application and provides proof of ownership such as the first page of the deed or a current property tax receipt. 3. If floodplain conditions apply, provide any additional floodplain materials required by the county. 4. Pay the county permit fee. Residential development permit: $30.00; commercial development permit: $350.00; 911 sign: $10.00; mailed sign: additional $10.00. 5. After the county receives completed paperwork and payment, it begins processing the 911 address and/or development permit. The county will issue a confirmation letter for the 911 address and a green permit plaque or sign for development that must remain visible from the road during construction. 6. If the project needs an OSSF permit, the landowner must complete the OSSF application, pay the OSSF fee ($250.00 residential; $350.00 commercial), obtain soil and site evaluation work from appropriately licensed professionals, submit design materials, and wait for county approval before construction begins. 7. For OSSF work, the installer must request final inspection before covering the system. The county will issue a final permit to operate after successful inspection.
04 How do I schedule a building inspection in unincorporated Colorado County, TX? ▸
Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in unincorporated Colorado County, TX via: For OSSF: installer must notify county permit office and request final inspection. Contact: 979-732-2435. For OSSF work, final inspection must be completed before system is covered..
last verified April 2026
source Colorado County Floodplain Management / 9-1-1 Rural Addressing and Colorado County On-Site Sewage Facility (OSSF) ↗
entry id permits/texas/colorado/unincorporated
Educational reference. Permit rules and fees change — confirm current requirements directly with Colorado County Floodplain Management / 9-1-1 Rural Addressing and Colorado County On-Site Sewage Facility (OSSF) before applying. Jaspector is not legal advice.