ADU Permit Submission Checklist in San Antonio, Texas
Everything you need to apply for a adu permit in San Antonio, Texas — documents, fees, steps, and a downloadable submission packet.
Key Facts
- Permit required
- Yes
- Submission method
- Online
- Typical fee range
- $4,500 – $13,200
- Review time
- Varies by jurisdiction
- Inspections
- 7 inspections required
ADU Permit Checklist
San Antonio — 6 required, 0 optional
Forms & Applications(1)
Plans & Diagrams(4)
Supporting Documents(1)
This checklist is for reference only. Requirements may change — always verify with San Antonio before submission.
Avoid rejections — generate a submission-ready packet
Get a personalized ADU permit packet for San Antonio, Texas — tailored to your project details.
- Required forms: Building Permit Application, and more
- Pre-filled templates: Permit Cover Sheet
- Fee breakdown: $1,500–$8,000 estimated total
- Step-by-step San Antonio Development Services Department portal submission guide
- Inspection prep checklist (7 items)
- Personalized for your specific project details
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Required Documents
San Antonio requires the following documents for this permit application.
Building Permit Application
Completed City of San Antonio building permit application with project description and property information
Architectural Plans
Complete architectural drawings signed by a licensed Texas architect or engineer, including floor plans, elevations, sections, and construction specifications
Site Plan
Site plan showing lot boundaries, building footprint, setbacks, parking areas, utilities, and property access
Zoning Verification Letter
Zoning verification letter from San Antonio Development Services confirming current zoning and ADU eligibility
Structural Engineering Plans
Structural calculations and engineering design by a licensed professional engineer for foundation and structural system design
Utility Connection Plans
Plans showing water, sewer, electrical, and gas connections with separate metering information for ADU
Permit Process
Follow these steps to submit your permit application through San Antonio Development Services Department.
- 1
Zoning Review
Request zoning verification letter to confirm ADU eligibility under San Antonio land development code. Note: Texas has no statewide ADU law; local code controls.
You'll need: Zoning Verification Letter
- 2
Submit Permit Application
Submit complete building permit application with architectural, structural, and utility plans to Development Services
You'll need: Building Permit Application, Architectural Plans, Site Plan, Structural Engineering Plans, Utility Connection Plans
- 3
Plan Review
Development Services, Fire, and Building divisions review plans for compliance with San Antonio Land Development Code and building standards
- 4
Respond to Plan Review
Address any comments from plan review and resubmit revised plans if required
- 5
Pay Permit Fees
Pay calculated permit fees based on valuation and square footage
- 6
Construction Phase Inspections
Schedule and pass required inspections: foundation, framing, electrical rough-in, plumbing rough-in, mechanical, and final
- 7
Final Inspection and Certificate of Occupancy
Pass final inspection and receive Certificate of Occupancy from Building Inspection Division
Fees and Timeline
Fee Breakdown
| Fee | Range | Confidence |
|---|---|---|
| ADU Permit Fee | $3,000 – $8,000 | Verified |
| Plan Review Fee | $1,500 – $5,200 | Verified |
Inspections Required
Foundation and footings inspection
Foundation and footings inspection
Framing and structural member inspection
Framing and structural member inspection
Electrical rough-in and separate service panel inspection
Electrical rough-in and separate service panel inspection
Plumbing rough-in and fixture inspection
Plumbing rough-in and fixture inspection
Mechanical systems and HVAC installation inspection
Mechanical systems and HVAC installation inspection
Fire separation wall and egress inspection (if applicable)
Fire separation wall and egress inspection (if applicable)
Final inspection for Code compliance and occupancy approval
Final inspection for Code compliance and occupancy approval
Authority Sources
Data on this page is sourced from official records published by the permitting authority. Always verify requirements directly before submitting.
Verified February 15, 2026
Verified February 15, 2026
Verified February 15, 2026
Verified February 15, 2026
Frequently Asked Questions
- Do I need a adu permit in San Antonio?
- Yes. San Antonio requires a adu permit for this type of project. Submitting without a permit may result in fines, required removal, or complications when selling your property.
- How long does adu permit approval take in San Antonio?
- Processing times in San Antonio vary depending on project complexity and current review volume. The process involves 7 steps. Contact San Antonio Development Services for current timelines.
- What documents are required for a adu permit in San Antonio?
- San Antonio requires 6 documents including Building Permit Application, Architectural Plans, Site Plan, Zoning Verification Letter, and others. See the full list above for details.
- What happens if I build without a adu permit in San Antonio?
- Building without a permit in San Antonio can result in stop-work orders, fines, required removal of work, difficulty selling your property, and insurance complications. It is strongly recommended to obtain proper permits before starting work.
- Can PermitMagic help prepare my adu permit submission in San Antonio?
- Yes. PermitMagic generates a submission-ready packet tailored to San Antonio's requirements, including a document checklist, workflow steps, and authority references. Start a permit plan to get your personalized packet.
- How much does a adu permit cost in San Antonio?
- ADU permit fees in San Antonio typically range from $4,500 to $13,200, depending on project scope. Fees may include building permit, plan review, and technology surcharges. Verify current fees with San Antonio.
Related Permits
Other permits in San Antonio
ADU permits in nearby cities
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