Austin ADU Builders
Austin's ADU scene is anchored by specialist firms — some building ADUs since 2005 — with a strong rental-income and multigenerational focus. Projects commonly span $119K–$450K depending on type and finishes.
3 builders based in the Austin 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 Austin 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.