Cost to build accessory dwelling unit — Lubbock, 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

When calculating the budget for a secondary unit, consider the costs for architectural design, permits, materials, and labor. Custom designs and high-end interior finishes will push your budget higher, while standardized layouts can keep costs more predictable. Exact pricing confirmed free on the call.

Frequently asked in Lubbock

Also serving nearby: Midland · Amarillo · Odessa · Abilene · San Angelo

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More on this: HUD ADU resources — ADU policy and financing research.

Service area details

Serving all of Lubbock — population 266,878; about 1,879 residents per square mile across 142.0 sq mi. ZIP codes covered include 79401, 79402, 79403, 79404, 79406, 79407, 79408, 79409.

Neighborhoods served in Lubbock: Tech Terrace, South Plains, Downtown Lubbock, North Lubbock, West Lubbock — and every surrounding area.