Last updated: September 24, 2026
What affects the price
Building an ADU involves several moving parts that shape your total investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.
About this service
ADUs are secondary homes on a single-family lot that provide independent living facilities. You might consider an ADU if you want to increase your property value or provide housing for family. These units are versatile and can be detached or attached to the main house. Exact pricing confirmed free on the call.
Frequently asked in Richardson
What's the cost of an accessory dwelling unit in Richardson, TX?
What ADU services are available for Richardson residents?
What's involved in ADU building in Richardson?
Can I find an accessory dwelling unit for rent in Richardson?
What's the process for an ADU estimate in Richardson?
What are common accessory dwelling unit permit requirements in Richardson?
Where can I find accessory dwelling unit builders in Richardson?
Also serving nearby: Plano · Garland · Allen · Carrollton · Dallas
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Richardson — population 117,435; about 4,111 residents per square mile across 28.6 sq mi. ZIP codes covered include 75080, 75081, 75082, 75083, 75085.
Neighborhoods served in Richardson: Telecom Corridor, Breckenridge, Canyon Creek, Galatas, Heights of Richardson — and every surrounding area.
Areas we serve
Browse by state, then city.
