A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Lakeway, TX
Building an ADU in Lakeway means working with deed restrictions, HOA covenants, expansive clay soils, and a housing stock dominated by custom homes from the 1970s through 2000s. We’re Fielding ADU Builders, the ADU and room-addition specialist inside the Garrison Partners family. We put the price in writing before work starts, build to code, and stand behind the finished job with a one-year written guarantee. Call (361) 309-9568 to schedule a free estimate.
Why Lakeway Homes Are Different
Lakeway’s housing stock is mostly large, custom-built single-family homes, often on generous lots with masonry or stucco exteriors. Many of those homes have existing detached garages or casitas that were never finished out for living space, and that is where a lot of our work starts. The lot sizes are a real advantage: there’s usually room to place a detached ADU in the back corner without crowding the primary home.
Two conditions shape most Lakeway ADU projects. First, the soils. Lakeway sits on expansive clay that swells when wet and shrinks when dry. That means foundation design matters more than people expect. A slab poured without accounting for moisture-driven movement will crack, and that crack runs through framing, drywall, and tile. We design for it from day one. Second, the climate. Hot, humid summers and occasional freeze events mean your ADU needs properly sized HVAC and real moisture control. Undersized AC in a converted garage will run constantly in August and still leave the space damp. These are the details that separate a unit that holds up for decades from one that starts failing in year two.
Lakeway also has an unusually high number of governing layers. Many single-family lots carry deed restrictions and HOA covenants that shape ADU feasibility, often requiring detached units to match primary home aesthetics while staying under lot coverage limits. We have worked through enough Lakeway covenant reviews to know what triggers pushback before the plans ever go to the city. Getting the design right the first time saves months.
Our Main Lakeway Services
Most Lakeway homeowners call us about one of two projects: converting existing square footage into living space, or building a detached unit from the ground up. Here’s how each works in Lakeway.
Room Addition Contractor in Lakeway
A room addition in Lakeway usually ties into a 1970s-to-2000s custom home, which means matching rooflines, exterior finishes, and floor elevations on a structure that was never square to begin with. We plan the foundation for Lakeway’s clay soil, size the HVAC for the added square footage, and coordinate with any HOA architectural review before permits go in. The written price includes all of that. Room Addition Contractor in Lakeway.
Garage Conversion Contractor in Lakeway
Lakeway has a large number of oversized detached garages that sit half-used. Converting one into a rentable unit or guest suite usually means insulating and sealing the existing slab, running new electrical and plumbing, and adding proper HVAC, all while keeping the exterior consistent with the primary home if an HOA covenant applies. We also check the slab for moisture issues before framing starts. Garage Conversion Contractor in Lakeway.
ADU Builders in Lakeway
A detached ADU on a Lakeway lot typically starts with a setback and coverage review against city rules and any deed restrictions. From there, we match the build method to your budget and lot: prefab from Abodu or Cover where site access and design fit, or conventional construction with James Hardie siding where the HOA requires a specific look. The number on the written quote is the number on the final invoice. ADU Builders in Lakeway.
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 Lakeway
We build conventional and we build prefab, so the brand decision follows the lot and the budget, not the other way around. We work regularly with our brands including Abodu, Cover, and Dvele, and we stock the common trim and siding materials for conventional builds locally so lead times stay short.
Pricing for ADU Company in Lakeway, TX
| Service | Typical range in Lakeway |
|---|---|
| Garage conversion (finished, one-bedroom) | $85,000 – $150,000 |
| Detached ADU (prefab, one-bedroom) | $180,000 – $280,000 |
| Detached ADU (conventional, one-bedroom) | $220,000 – $350,000 |
| Detached ADU (two-bedroom, conventional) | $280,000 – $420,000 |
| Room addition (primary suite, 400 sq ft) | $110,000 – $190,000 |
| Room addition (ground-floor, 600 – 800 sq ft) | $160,000 – $280,000 |
| Casita or pool-house finish-out (with kitchen and bath) | $90,000 – $180,000 |
| Foundation repair or slab prep on expansive clay | $8,000 – $25,000 |
What pushes a Lakeway job toward the top of the range is usually site work: slab prep on expansive clay, longer utility runs from the street on deep lots, or HOA-required exterior finishes that cost more than standard siding. The price we hand you in writing before work starts is the price you pay, and the one-year Garrison Standard guarantee is on the same page.
Neighborhoods We Serve in Lakeway
We work across Lakeway, from the original sections near Lakeway Drive up into the newer hill country lots west of 620. Response time for an estimate visit in Lakeway is typically one to two business days depending on the week.
- The Hills of Lakeway
- Rough Hollow
- Lakeway Highlands
- Yaupon Creek
- Flintrock at Hurst Creek
Service Area – Cities Near Lakeway
Our crews work throughout the Austin metro, so if you’re comparing options in a nearby city, we can help. We serve Austin, TX, Georgetown, TX, Pflugerville, TX, and San Marcos, TX. Scheduling and dispatch run out of our Austin office; the crews on your Lakeway site are local.
Serving Lakeway, TX - Our Local Coverage Area
We’re based in the Lakeway 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 Lakeway
Most estimate visits in Lakeway get scheduled within one to two business days. Call (361) 309-9568 and a live person will set a time that works for you, no callback queue.
It depends on the community’s covenants. Many Lakeway deed restrictions require detached units to match the primary home’s exterior and stay under lot coverage limits, but those same covenants often allow casitas and guest quarters. We review the governing documents before you spend money on plans.
No. The price goes in writing before any work starts, and the number you approve is the number on the final invoice. If Lakeway soil conditions or an HOA review force a change, we put that change in writing for your approval first.
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 Lakeway Customers Say
"Good addition. Electrical inspection delayed a week, which was the county, but the build is great."
- Eva K."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.
