







A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable Garage Conversion Contractor Across Brushy Creek
A garage conversion in Brushy Creek typically runs $85 – $160 per square foot, so a standard two-car conversion into a studio or one-bedroom suite lands between $34,000 and $70,000 before permit fees. Most projects take four to eight weeks once the permit is approved. We schedule a free on-site walkthrough within a few days of your call, and the written price comes before any work starts. Call (361) 309-9568 to get your estimate scheduled.
We work in Brushy Creek every week. The homes here follow a pattern: 1990s and 2000s builds on 0.2 to 0.5 acre lots, brick or stone veneer, HOA covenants that most owners never read past the first page. Those covenants matter. Texas state law now overrides many deed restrictions that once banned ADUs, so a garage conversion is often legal even when the subdivision’s original rules said otherwise. But the HOA design review still applies, and skipping it causes real problems. We know how Brushy Creek’s review process works because we have been through it in Sendero Springs, Cat Hollow, and the Greenshores area. That local knowledge keeps your project moving instead of stalled at a stop-work order.
Why Fielding ADU Austin Is Brushy Creek’s Preferred Garage Conversion Contractor Company

We are the Garage Conversion Contractor team inside Fielding ADU Austin, part of the Garrison Partners family that has built to The Garrison Standard since 2006. Brushy Creek homeowners call us because we put the price in writing before any work begins, and the number on day one is the number on the final invoice. No change orders, no surprise line items at the door.
Reed Calloway leads our crew. Reed has walked more Brushy Creek lots than he can count, and he will tell you the same thing every time: the soil here shifts. Expansive clay expands when wet and contracts in the dry heat. Your existing garage slab was poured for a garage, not a bedroom. That slab decision alone separates a conversion that lasts from one that cracks drywall within the first year. Reed Calloway checks it before anything gets framed.
Every crew member is background-checked and arrives in uniform. You will know who is on your property. And when you call (361) 309-9568, a live person answers, day or night.
Garage Conversion Permit in Brushy Creek
A garage conversion permit in Brushy Creek is the county-issued approval that allows you to legally change a garage from vehicle storage to conditioned living space. The permit cost typically runs $1,200 – $2,800 depending on the scope of electrical, plumbing, and structural work. We pull the permit ourselves as the general contractor, so you are not chasing paperwork at the county office.
The Brushy Creek review process has its own rhythm. Because much of the area sits in unincorporated Williamson County, permitting routes through the county rather than a city building department. That often means a faster turnaround than older Austin neighborhoods, roughly three to six weeks for standard residential conversions. HOA architectural review runs parallel, and that is where homeowners get surprised. Many subdivisions still require design approval even though state law permits the conversion.
HOA Review and Design Requirements
Your HOA cannot ban your garage conversion outright if state law allows it, but they can still require the new exterior to match the primary home. That means matching brick or stone veneer, window style, and entry door trim. In Sendero Springs, our crew converted an attached two-car garage into a 420-square-foot rental suite. The homeowner was surprised Texas law had nullified the original deed restriction, but their HOA still required the new exterior entry door and windows to match the home’s Austin stone and brick. We handled the design submission and the build. The photo package for the HOA took an afternoon, not a permit cycle.
Slab and Foundation Checks
Before we frame a single wall, we test the existing slab for movement. Brushy Creek’s expansive clay soils can shift a slab by a fraction of an inch every season, and over twenty years that adds up. A slab that has moved means corner cracks in the new drywall, doors that bind, and a floor that slopes. We upgrade the slab with a moisture barrier where needed, and we do it before framing, not after the drywall goes up.
Garage Conversion to Living Space in Brushy Creek

Garage conversion to living space in Brushy Creek is the process of turning an attached or detached garage into a conditioned room: a bedroom, home office, rental suite, or in-law apartment. Typical Brushy Creek projects range from $34,000 for a basic studio conversion to $85,000 or more for a full one-bedroom ADU with a kitchen and bath. The permit, the slab work, the insulation, and the HVAC all factor in.
One thing we see often in Brushy Creek is the builder-grade garage that was never insulated. The walls may be bare studs behind drywall, or insulated with R-13 batts that do not hold up in a Texas summer. Converting that space means adding proper insulation, air sealing, and a dedicated HVAC solution. A single window unit will not handle a Brushy Creek August, and under-sized cooling leaves the space damp and prone to mold.
Attached Garage to Bedroom or Suite
Attached garage conversions are the most common request in Brushy Creek because the foundation and roof already exist. The work involves raising the floor to match the house, adding insulation and drywall, running electrical, and installing a mini-split or extending the existing HVAC. The payoff is a bedroom or rental suite without adding a new foundation, which is the most expensive part of any addition.
Detached Garage Conversion and Garage ADU
Detached conversions cost more per square foot because the structure needs its own electrical subpanel, plumbing run, and often a separate HVAC system. On Brushy Creek’s larger lots, a detached garage can become a full ADU with its own entrance and small kitchen. Placement matters: setbacks and mature trees on Brushy Creek lots often dictate where the conversion can grow, and we design to those constraints from the first walkthrough.
Trusted Brands We Service in Brushy Creek
We work with the brands Brushy Creek homeowners are already researching. For prefab and modular garage ADUs, we install and finish Abodu and Cover units. For conventional builds, we frame and side with James Hardie products because they hold up to Brushy Creek’s humidity and occasional freeze cycles better than lower-grade fiber cement. Dvele is another modular option we have worked with for high-efficiency conversions. We keep materials sourced locally where possible, which shortens lead times for Brushy Creek projects, especially when an HOA requires a matching Hardie plank or brick veneer.
Common Garage Conversion Contractor Problems We See in Brushy Creek Homes
- Skipping the HOA architectural review. Many Brushy Creek subdivisions still require design approval, and an unapproved conversion can trigger a stop-work order or fines. We have seen neighbors report violations, and the cure costs more than the review would have.
- Reusing the existing slab without testing it. Expansive clay under Brushy Creek homes shifts with moisture. A slab that moved before the conversion will crack the new framing within a year, and drywall cracks show up fast.
- Under-sizing the HVAC. A window unit or a small ductless head will not control humidity in a converted Brushy Creek garage. The space feels damp, smells musty, and mold risk climbs. We size the system for the room’s actual load.
- Voiding the original builder warranty. If your home is still under a structural warranty, unauthorised work on the garage slab or foundation can void it. We work to avoid that, which means doing the right permits and the right engineering from the start.
Pricing for Garage Conversion Contractor in Brushy Creek, TX
A basic attached garage conversion to a finished room in Brushy Creek runs $34,000 – $50,000. A full one-bedroom garage ADU with kitchen and bath runs $55,000 – $85,000. Detached conversions add $10,000 – $20,000 because of the separate electrical and plumbing runs. Permit fees add $1,200 – $2,800. The three variables that move the price most: the slab condition, the HVAC route, and the HOA’s exterior finish requirements. We give you a written line-item price before any work starts, and that number does not move unless you change the scope. Call (361) 309-9568 for a free estimate. That estimate is free, and the price goes in writing.
We Also Serve Cities Near Brushy Creek
Fielding ADU Austin is a Garage Conversion Contractor in Brushy Creek serving the wider metro. We also work in Austin, Georgetown, Pflugerville, and San Marcos. If you are just outside Brushy Creek, call and ask; we likely already have a crew close by.
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 Garage Conversion Contractor in Brushy Creek
Yes, your HOA can still require design approval even though state law generally overrides deed restrictions that ban ADUs outright. The HOA controls aesthetics, not legality. We prepare the design review package for you, including elevation drawings and finish samples that match your home’s brick or stone veneer. Call (361) 309-9568 and we will tell you what your specific subdivision will ask for.
The biggest mistake is starting work without checking both the HOA review process and the slab condition. An unapproved conversion can be stopped mid-project, and a cracked or moving slab will undermine everything built on top of it. We test the slab before framing and submit the HOA package before the first permit goes in. Get the free estimate at (361) 309-9568.
It can, if the work touches the foundation, structural walls, or roof framing without proper permits and engineering. That is why we pull the GC permit ourselves and follow the county’s structural requirements. Done correctly, a permitted conversion does not void the warranty on unaffected areas. We will review your specific warranty terms before we finalize the scope.
The garage door and opener are usually worth replacing with an insulated wall and a proper entry door. Builder-grade drywall and bare-concrete floors are typically replaced or covered during the conversion. The existing roof trusses and concrete walls are usually fine to keep if they are in good shape and the slab tests stable. We will walk the space and tell you what is worth the money and what is not. The estimate is free; call (361) 309-9568.
A standard garage conversion permit in Brushy Creek, which routes through Williamson County for much of the area, typically takes three to six weeks. That is often faster than older Austin neighborhoods where city review queues run longer. HOA design review runs parallel and usually adds one to three weeks. We handle both timelines so one does not stall the other. Call (361) 309-9568 for a project-specific schedule.
Written by Reed Calloway, Owner at Fielding ADU Austin, serving Brushy Creek and the surrounding metro.




