A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Austin, TX
Fielding ADU Austin builds accessory dwelling units, garage conversions, and room additions across the city, on lots where the rules change from one street to the next. Austin’s housing stock runs from 1920s bungalows in Hyde Park to 1990s tract homes in Circle C, and the city’s zoning overlays mean no two ADU projects face the same permit path. We put a written price in front of you before any work starts, and every job is covered by The Garrison Standard’s 365-day written guarantee. Call (361) 309-9568 to talk through what your lot allows.
Why Austin Homes Are Different
Central Austin is full of pre-1950s bungalows on deep lots, which sounds ideal for an ADU until you hit the city’s McMansion Ordinance and compatibility standards. That ordinance limits how much of a lot can be covered and how large a structure can be relative to its neighbors, and it applies to a surprising number of ADU projects. In East Austin, the 2006 granny flat pilot program left a legacy of lots with alley access and no required off-street parking, which changes the site plan math entirely. Out in newer subdivisions like Steiner Ranch or Avery Ranch, the bigger obstacle is usually the HOA covenant, not the city, and many HOAs still prohibit detached ADUs outright.
Then there’s the climate. Austin summers push past 100 degrees for weeks at a time, and the city’s energy code now requires cool roofs and high-efficiency HVAC on new ADUs. Creek corridors along Shoal Creek, Waller Creek, and Onion Creek put some lots in floodplain zones, which triggers elevation certificates and additional review. A contractor who only builds in the suburbs is not prepared for what an Austin permit reviewer will ask about. We are.
Our Main Austin Services
Three services account for most of what Austin homeowners ask us about. Each has its own dedicated Austin page with local pricing, permit details, and project timelines.
Room Addition Contractor in Austin
Room additions in Austin usually mean bumping out on a 1950s ranch in Allandale or adding a second-story primary suite in Mueller, where the lot lines are tight and the compatibility standards bite. We handle the structural drawings, the foundation work, and the city’s energy code requirements for the new conditioned space. Before any work starts, you get a line-item price in writing, and the final invoice matches it. Reed Calloway runs the Austin crew, and he walks the site before we quote. Room Addition Contractor in Austin
Garage Conversion Contractor in Austin
Garage conversions are the fastest ADU path in Austin, especially in East Austin neighborhoods where the granny flat pilot waived parking requirements and the alley access makes a converted garage feel like a standalone cottage. The work involves insulating the slab and walls to meet the city’s energy code, running new electrical, and often replacing the garage door with a wall and windows. Permits matter here; an unpermitted conversion will surface at resale. Garage Conversion Contractor in Austin
ADU Builders in Austin
Detached ADUs in Austin range from factory-built units on a slab to stick-built cottages with James Hardie siding, and the right choice depends on your lot’s setbacks, your HOA, and your budget. We work with prefab platforms including Abodu and Cover, plus conventional construction, and we know which method clears Austin’s permit process without weeks of back-and-forth. The Garrison Code applies either way: show up on time, price in writing, build by the book, leave it clean, stand behind it for a year. ADU Builders in Austin
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Austin
We service and install units from Abodu, Cover, and Dvele. For conventional builds, we spec James Hardie siding and Tuff Shed-style structures. Parts and panels for these platforms are ordered to the job site, and we coordinate delivery windows to match your permit approval date. See our brands for the full platform list.
Pricing for ADU Company in Austin, TX
| Service | Typical range in Austin |
|---|---|
| Detached ADU (prefab, 400 – 600 sq ft) | $180,000 – $260,000 |
| Detached ADU (conventional build) | $250,000 – $400,000 |
| Garage conversion (attached, 1 bed) | $90,000 – $150,000 |
| Garage conversion (attached, 2 bed) | $130,000 – $200,000 |
| Room addition (primary suite bump-out) | $120,000 – $180,000 |
| Room addition (second-story, 400 – 600 sq ft) | $200,000 – $320,000 |
| Site work & foundation (slab, ADU) | $15,000 – $35,000 |
| Permit fees & drawings (Austin, ADU) | $6,000 – $18,000 |
| Utility connections & trenching | $8,000 – $25,000 |
| Floodplain compliance (if applicable) | $10,000 – $40,000 |
What pushes a price up in Austin is usually the lot: tight setbacks that require a variance, HOA design review that forces material changes, or a floodplain determination that adds elevation work. When we quote, the number you approve is the number on the final invoice, with no change orders unless you change the scope.
Neighborhoods We Serve in Austin
Our Austin crews work from Hyde Park to South Congress to the far northwest suburbs. Response time for a site visit anywhere in the Austin metro is typically one to three business days, depending on current project load.
- Hyde Park
- Allandale
- East Austin
- Mueller
- Circle C Ranch
Service Area – Cities Near Austin
Beyond Austin, we serve Pflugerville, TX, Manor, TX, Buda, TX, and Hutto, TX, where the permit offices and HOA rules follow a different playbook than Austin’s. If you are on the edge of the metro, call and we’ll tell you straight whether we handle your area.
Serving Austin, TX - Our Local Coverage Area
We’re based in the Austin area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About ADU Company in Austin
Yes. We pull every permit through the City of Austin’s Development Services Department, including McMansion Ordinance review, energy code compliance, and floodplain determinations when they apply. No work starts unpermitted, and we pass every inspection before we hand over the keys.
A garage conversion typically runs three to six months from permit submission to final inspection. A detached ADU usually runs six to twelve months, depending on site work and whether a variance is required. We give you a written timeline with the written price, and we hold to it. Call (361) 309-9568 for a project-specific answer.
Some will. Central Austin neighborhoods built before the 1990s often have no HOA at all, while newer subdivisions like Steiner Ranch or Avery Ranch frequently have covenants that prohibit detached ADUs. We review your HOA’s governing documents during the estimate and tell you before you spend a dollar whether the project is viable.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Austin Customers Say
"Honest feedback on what the lot could fit. Told me up front what would fit on the lot and what the setbacks would allow."
- Rita C."Built a detached ADU behind our house. The builder is a veteran and runs the site like a platoon: schedule posted, crew on time, everything labeled. Finished within a few days of the date."
- Ken W."Good addition. Electrical inspection delayed a week, which was the county, but the build is great."
- Eva K.
