Cost of accessory dwelling unit — Round Rock, TX
Last updated: September 24, 2026
What affects the price
Building an ADU involves several moving parts that shape your total budget. The biggest factor is whether you choose a prefabricated unit or a custom build on-site. Site preparation is also significant; if your land requires extensive grading, utility trenching, or foundation work, costs will climb. Your choice of finishes—like kitchen cabinetry, flooring, and siding materials—also shifts the bottom line. We help you navigate these variables to find a setup that fits your property. Exact pricing confirmed free on the call.
About this service
The total price for an ADU depends on several moving parts, including the square footage, your foundation type, and local labor rates. Choosing high-end finishes or complex site prep will naturally increase the budget, while standard layouts help keep things manageable. Exact pricing confirmed free on the call.
Frequently asked in Round Rock
Can I get an ADU quote in Round Rock?
Are homes with in-law suites common in Round Rock?
Homes with in-law suites, or accessory dwelling units, are increasingly popular in Round Rock. They provide a practical solution for multi-generational families or for adding rental income potential. These additions can significantly boost a property's appeal. We help you connect with pros who can build these spaces.
What are modular ADUs in Round Rock?
Where can I find ADUs near me in Round Rock?
What are the best ADU options for Round Rock?
Are prefab ADUs available in Round Rock?
Are homes with mother-in-law suites available in Round Rock?
Also serving nearby: Georgetown · Austin · Killeen · Temple · New Braunfels
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Round Rock — population 130,406; about 3,439 residents per square mile across 37.9 sq mi. ZIP codes covered include 78664, 78665, 78680, 78681, 78682, 78683.
Neighborhoods served in Round Rock: Cathedral Park, Forest Creek, Sendero, The Meadows, Old Town, Brushy Creek — and every surrounding area.
Areas we serve
Browse by state, then city.