ADU Building
Services
in Austin, TX
Unlock your property's full potential. Build a backyard cottage, garage apartment, or in-law suite — Austin's ADU rules have never been more homeowner-friendly.
Call (737) 205-2971 — Free ADU ConsultAustin's ADU Builder — Design, Permits & Construction
Austin is one of the most ADU-friendly cities in Texas. The HOME Initiative expanded eligible zones to SF-1, SF-2, and SF-3 and reduced minimum lot sizes to 2,500 sq ft — more Austin homeowners than ever can now build.
We handle the full process: feasibility assessment, architectural design, City of Austin Development Services permitting, construction, and final inspection. Our team navigates Austin's zoning, setbacks, impervious cover limits, and heritage tree protections on your behalf.
ADU projects pair well with our home addition construction and room addition services. Our concrete pouring team handles all foundations, and a finished patio between structures completes the property.
What You Need to Know Before Building
Zoning Eligibility
ADUs now permitted in SF-1, SF-2, and SF-3 zones. Most Austin residential properties now qualify under the HOME Initiative.
Size & Height Limits
Maximum 1,100 sq ft or 15% of lot area (whichever is smaller). Height under 30 feet. Second-story floors cap at 550 sq ft.
Setbacks & Heritage Trees
Detached ADUs require 10 ft from the main home. Austin heritage oak protections require a root zone review — we handle this upfront.
Rental Income Potential
Long-term rentals (30+ days) have zero restrictions. A well-built Austin ADU generates $1,500–$3,000 per month in passive income.
No Parking Required
Austin eliminated off-street parking requirements for ADUs in 2023. More of your lot stays open for living space and landscaping.
2 ADUs Per Lot
The HOME Initiative allows up to two ADUs per residential lot — a major opportunity for investors and homeowners alike.
Official Austin ADU Resource: The City of Austin maintains the official Additional Dwelling Units page on AustinTexas.gov , where homeowners can verify zoning, check permit requirements, and use the “Can I Build an ADU?” property tool before any design work begins.
Austin ADU Construction Costs (2026)
| ADU Type | Description | Estimated Cost |
|---|---|---|
| Garage Conversion | Existing footprint converted to habitable living space | $50,000 – $100,000 |
| Prefab / Modular ADU | Factory-built, delivered and installed on site | $100,000 – $180,000 |
| Standard New Construction | Custom detached backyard cottage | $150,000 – $250,000 |
| High-End Custom ADU | Premium finishes, 2-story, complex site | $250,000 – $400,000+ |
Let's Build Your Austin ADU
Free feasibility consultation — we check your zoning, lot size, and impervious cover before you spend a dollar on design.
(737) 205-2971 — Free Consult