Deck Addition Permit Requirements — San Antonio, TX
Yes, a residential deck building permit is required in San Antonio when the deck exceeds 300 square feet in area or is more than 30 inches above grade at any point.
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What affects your permit requirement
Typical requirements
- Fee basis
- Residential Deck Building Permit (Carports and Decks): $160.00
Application subject to a processing fee and 6% surcharge of total permit fee. If the deck includes electrical, mechanical, or plumbing work, separate trade permit fees apply per the same fee schedule.[fee schedule]- Department
- City of San Antonio Development Services Department (DSD)(210) 207-1111https://www.sa.gov/Directory/Departments/DSD/BuildSA/Portal
These figures reflect typical jurisdiction data. Fees and timelines change. Run a free search on your exact address for jurisdiction-confirmed requirements before you bid or apply.
Frequently asked questions
Do I need a permit for a deck addition in San Antonio?
Yes, a permit is required if your deck exceeds 300 square feet or is more than 30 inches above grade at any point. You apply online through the BuildSA Customer Portal, selecting 'Accessory Structures and Additions' then 'Deck' for uncovered or 'Covered Patio' for covered decks.
How much does a residential deck permit cost in San Antonio?
The flat fee for a deck permit is $160.00, as stated in the FY2026 City of San Antonio fee schedule effective October 2025. This fee is subject to a processing fee and 6% surcharge on the total permit fee.
What if my deck includes electrical or plumbing?
Electrical, plumbing, or mechanical work requires separate permits applied by state-licensed trade contractors with active City of San Antonio registrations. These separate trade permits have their own fees per the fee schedule.
Where do I apply for a deck permit in San Antonio?
Apply online via the BuildSA Customer Portal at https://www.sa.gov/Directory/Departments/DSD/BuildSA/Portal. This is the primary entry point for residential deck permits in the City of San Antonio Development Services Department.
Could my deck be in a flood zone requiring additional permits?
If your parcel falls within or adjacent to a Special Flood Hazard Area per FEMA, a separate Floodplain Development Permit from San Antonio's Storm Water Management division may be required. Verify your flood zone status at https://www.sanantonio.gov/PublicWorks/StormWater or call (210) 207-0121.