Cost to build accessory dwelling unit — McAllen, TX
Last updated: September 24, 2026
What affects the price
Building an ADU involves variables that shift your total investment. The footprint size and complexity of the architectural design are primary factors. Are you planning a detached unit that requires new utility trenching, or is this a garage conversion that uses existing plumbing? Site accessibility, soil conditions, and your choice of finishes—like luxury flooring versus standard options—also play significant roles. Permitting fees vary widely depending on your local municipality and current zoning requirements. Exact pricing confirmed free on the call.
About this service
The expense of building an ADU varies based on site preparation, whether you need to run new sewer or electrical lines, and the level of interior customization you choose. Larger custom builds naturally require more materials and labor than simpler conversions. We provide exact pricing confirmed free on the call.
Frequently asked in McAllen
Are there accessory dwelling unit grants in McAllen?
What's involved in ADU construction in McAllen, Texas?
How much does an accessory dwelling unit cost in McAllen?
Can I get an ADU estimate for my McAllen property?
What financing options are available for accessory dwelling units?
What are homes with mother-in-law suites like in McAllen?
Where can I find an accessory dwelling unit near me in McAllen?
Also serving nearby: Edinburg · Mesquite · Brownsville · Laredo · Corpus Christi
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of McAllen — population 146,593; about 2,351 residents per square mile across 62.3 sq mi. ZIP codes covered include 78501, 78502, 78503, 78504, 78505.
Neighborhoods served in McAllen: North McAllen, South McAllen, Downtown McAllen, Palm Village, Bentsen Palm Village — and every surrounding area.
Areas we serve
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