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Get your free estimateADU Company in Brushy Creek, TX
Fielding ADU Builders handles accessory dwelling units, garage conversions, and room additions across Brushy Creek, TX, where the work is shaped by one consistent reality: homes built between 1990 and 2010 on lots large enough to build on, but rarely without an HOA attached. Our crews work with the existing brick and stone veneer exteriors common here, match the rooflines and setbacks the HOA will ask about, and plan foundations around the expansive clay soils that move under Brushy Creek homes. Call (361) 309-9568 to talk through your lot before you commit to anything.
Why Brushy Creek Homes Are Different

Brushy Creek is not a dense urban grid. It’s a spread of 1990s and 2000s subdivisions where lots run 0.2 to 0.5 acres, and that changes what an ADU or addition looks like. The room is there. The constraints are too.
The homes themselves are mostly brick or stone veneer over wood frame, which matters when we tie a new roofline into the existing one or match coursing on an addition. Backyards are generous enough for a detached ADU, but mature trees frequently sit exactly where a homeowner first pictures the structure going. We plan around the trees rather than remove them where we can, because Brushy Creek HOAs often protect them and because a shaded ADU costs less to cool in a Texas July.
The climate is the other driver. Hot, humid summers mean an ADU without a properly sized HVAC system becomes a storage shed by June. The occasional winter freeze and the heavy rain events we get in this part of the state mean drainage and insulation details can’t be skipped. And the underlying clay soil expands and contracts enough to crack a slab that wasn’t engineered for it. These are the things that separate a Brushy Creek build from an identical floor plan somewhere else.
Deed restrictions in many Brushy Creek subdivisions originally prohibited ADUs outright. Recent state law has overridden some of those prohibitions, which is why we’re now hearing from homeowners who had written the idea off years ago. What the new laws don’t remove is the HOA approval process itself. Most Brushy Creek HOAs still require design review, and many expect the ADU to match the primary home’s exterior. We’ve handled that process enough times to know what gets a vote and what stalls.
Our Main Brushy Creek Services
The three jobs homeowners in Brushy Creek call us about most are room additions, garage conversions, and detached or attached ADUs. Each has its own page that goes deeper into local conditions, but here’s a quick routing to the right place.
Room Addition Contractor in Brushy Creek
A room addition in Brushy Creek usually means tying into a brick or stone veneer exterior and matching the existing roof pitch so the addition doesn’t read as an afterthought. Because many of these homes were built in the 1990s and 2000s, framing depths and insulation levels vary, and we account for that before we open the wall. Setbacks on 0.2 to 0.5 acre lots are workable, but mature trees and existing utility runs often shape where the addition can land. Room Addition Contractor in Brushy Creek

Garage Conversion Contractor in Brushy Creek
Garage conversions in Brushy Creek carry a particular wrinkle: the HOA. Some subdivisions still restrict converting a garage that faces the street, while others are now silent on it. We help homeowners determine what applies before committing. Beyond the approval question, the work itself is about HVAC, insulation, and making sure the converted space doesn’t feel like a garage with drywall. Attached garages built in this era often need floor leveling before finish work. Garage Conversion Contractor in Brushy Creek

ADU Builders in Brushy Creek
A detached ADU on a Brushy Creek lot is a different equation than anywhere else in the metro. You’re working with expansive clay soil, a mature tree canopy, setback lines that HOAs watch, and a primary home whose brick or stone exterior the HOA may expect the ADU to echo. We build conventional ADUs with James Hardie siding where that fits the aesthetic, and we work with prefab platforms like Abodu and Cover when the lot and budget point that direction. ADU Builders in Brushy Creek

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 Brushy Creek
We work with the systems homeowners in Brushy Creek are already researching: Abodu and Cover for prefab ADUs, James Hardie siding for conventional builds, and Tuff Shed-style structures where the budget calls for a simpler footprint. See our brands for the full list and how we match each one to a lot.
Pricing for ADU Company in Brushy Creek, TX
| Service | Typical range in Brushy Creek |
|---|---|
| Detached ADU (prefab, turnkey) | $180,000 – $350,000 |
| Detached ADU (conventional build) | $225,000 – $400,000 |
| Attached ADU / junior ADU | $120,000 – $250,000 |
| Garage conversion (full living unit) | $95,000 – $185,000 |
| Room addition (400 – 800 sq ft) | $110,000 – $220,000 |
| Primary suite addition | $130,000 – $240,000 |
| Second-story addition | $180,000 – $320,000 |
| Plumbing rough-in for ADU | $8,000 – $18,000 |
| Electrical rough-in for ADU | $7,000 – $16,000 |
| HVAC system for ADU | $6,000 – $14,000 |
| Foundation (slab, engineered for clay soil) | $12,000 – $28,000 |
Brushy Creek pricing runs higher than a flat-lot build elsewhere because of the clay-soil foundation work, HOA design requirements, and tree-preservation adjustments that come up on nearly every job. That’s why the written price matters as much as it does here: the number you approve before we start is the number on your final invoice.
Neighborhoods We Serve in Brushy Creek
We work all through the Brushy Creek area, including the subdivisions most callers know by name. Response for an estimate visit is typically within a few business days depending on our schedule.
- Brushy Creek North
- Brushy Creek South
- Cat Hollow
- Pepper Rock
- Ranch at Brushy Creek
Service Area – Cities Near Brushy Creek
Brushy Creek sits at the edge of several markets we cover regularly. If you’re just outside the neighborhood boundaries, we also work in Austin, TX, Georgetown, TX, Pflugerville, TX, and San Marcos, TX. Call us and we’ll tell you straight whether your address is in our service area.
Serving Brushy Creek, TX - Our Local Coverage Area
We’re based in the Brushy Creek 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 Brushy Creek

We schedule estimate visits across Brushy Creek on a rolling basis and can typically get to your lot within a few business days. Call (361) 309-9568 and a live person will set a window that actually works for you. No voicemail, no callback queue.
We prepare the documentation your HOA needs, including exterior finishes, site plans, and setback calculations. The approval itself comes from the HOA board, not from us, but we’ve been through enough Brushy Creek design reviews to know what gets flagged. Call (361) 309-9568 to walk through your specific subdivision’s rules.
Almost always yes. The expansive clay soils common to Brushy Creek shift with moisture changes, and a standard slab can crack without an engineered design that accounts for that movement. We include that engineering in every ADU and room addition we price, so it’s never a surprise change order later.
Call Fielding ADU Austin at (361) 309-9568 for a free estimate on your Brushy Creek project. Written price upfront, permitted work, and a one-year written guarantee on everything we build.
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 Brushy Creek Customers Say
"Room addition over the back patio. Framing is square, windows are tight, and the roofline matches."
- Danny L."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.




