Engineering Excellence in Central Texas ADU Construction
Georgetown ADU Builders is dedicated to precision structural engineering, local municipal code compliance, and sustainable residential design for accessory dwelling units across Central Texas.
Our Core Engineering Philosophy
Building an accessory dwelling unit in Georgetown or Williamson County requires far more than basic residential framing. Central Texas features complex geological conditions, including expansive Vertisol black clay soils, shallow karst limestone bedrock, and extreme summer heat profiles.
Our engineering-first approach ensures every ADU features a monolithic post-tension concrete slab or stem-wall foundation designed to withstand soil movement without cracking interior drywall or causing door frames to bind.
4 Pillars of Construction Quality
1. Post-Tension Slabs
Monolithic concrete foundation pours engineered with high-tensile steel cables floating safely over Vertisol clay soil layers.
2. Thermal Barrier Envelope
Closed-cell spray foam insulation, radiant barrier roof decking, and Low-E glass assemblies tailored for 100°F+ Texas heat spikes.
3. Acoustic Isolation
STC 55+ party wall assemblies using staggered studs, mineral wool insulation, and sound-dampening channels on attached suites.
4. 100% Code Compliance
First-pass building permit clearance with the City of Georgetown Planning Department and Williamson County ESD.
Dedicated to Universal Design & Accessibility
We specialize in universal ADA accessibility features for Sun City and Georgetown seniors. Our floor plans integrate zero-step entry thresholds, 36-inch wide doorways, curbless roll-in showers, and caregiver suite layouts that enable independent aging-in-place.
Start with a lot assessment.
Setbacks, soil and the utility runs decide what can be built before anyone draws a plan. That is the visit worth booking first.
Call (737) 240-4005Mon - Sat: 7:00 AM - 7:00 PM
Request Your Free ADU Site Assessment
Tell us the property and what you want to build. We assess the lot and come back
to you.
Engineered for Central Texas Geology & Thermal Demands
Building lasting accessory dwelling units requires more than standard framing practices. Central Texas Vertisol black clay soils experience continuous shrink-swell movement throughout rain and drought cycles. Without specialized foundation design, unreinforced concrete slabs crack and warp over time.
Post-Tension Foundation Slabs
Monolithic concrete pours integrated with high-tensile steel cables engineered to float above expansive clay.
Thermal Envelope Security
Closed-cell spray foam, radiant barrier decking, and Low-E window assemblies built for 100°F+ summer heat spikes.
Verified ADU Construction Benchmark
- ASTM C109 Concrete Standard: High-compression strength verified on every foundation pour.
- Acoustic Isolation (STC 55+): Sound-dampening channels and staggered studs on attached suites.
- High-SEER2 Heat Pumps: Multi-zone ductless mini-split HVAC climate control.
- 100% City Code Pass Rate: Full compliance with IRC 2021 and Georgetown Unified Development Code (UDC).