San Antonio ADU Builders
San Antonio has a distinctive casita culture — from backyard studios starting around $29K to fully managed ADU programs covering assessment, permit-ready designs, financing, and the licensed build.
5 builders based in the San Antonio area
Cost basics
Detached ADU projects commonly run $150,000–$400,000+ depending on size and finishes; garage conversions cost less. Builders focused on the San Antonio area can give project-specific pricing — several publish real example budgets on their profiles.
Permit basics
State law requires by-right approval of compliant ADUs in most cases, but local rules (setbacks, height, parking, historic districts) vary. Confirm requirements with your city's planning department before finalizing a design — or ask a local design-build firm, which handles permitting as part of the project.