Looking for accessory dwelling unit services in Houston, TX? Call AccessoryDwellingUnit Direct for a contact a provider — no obligation. Licensed adu builders serve Houston and the surrounding area, and you'll get straight answers on timing and what affects the price.

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.

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Frequently asked in Houston

What are the disadvantages of ADUs in Houston?

Potential disadvantages for ADUs in Houston might include ensuring adequate parking on your property, especially in denser areas. You'll also want to consider the impact on your existing yard space and any potential increases in utility costs. Integration with existing city services is usually straightforward. We can help you think it through.

How much does an ADU cost in Houston?

What are the rules for ADUs in Houston?

Houston has relatively straightforward rules for ADUs, generally allowing them as secondary units on lots with single-family homes. Key regulations often involve lot size, setbacks, and ensuring the ADU is subordinate to the main house. Understanding these guidelines is crucial. We can help you navigate them.

Can I build an ADU in my Houston backyard?

Yes, building an ADU in your Houston backyard is a popular option, provided you meet the city's zoning and building code requirements. This usually involves adhering to setback regulations and ensuring the ADU is a secondary dwelling. A site assessment is often the first step to confirm feasibility. We can help arrange that.

What permits are needed for an ADU in Houston?

Are there restrictions on the size of ADUs in Houston?

Houston has regulations regarding the size and placement of ADUs, often related to lot coverage and the primary dwelling's size. Generally, ADUs are intended to be secondary and subordinate to the main house. Specific size limitations can depend on your property's zoning. A quick call can clarify this for you.

Also serving nearby: Pasadena · Pearland · Sugar Land · League City · Conroe

All cities in Texas →

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

Service area details

2,314,157residents

3,612per sq mile

8ZIP codes served

Serving all of Houston — population 2,314,157; about 3,612 residents per square mile across 640.6 sq mi. ZIP codes covered include 77001, 77002, 77003, 77004, 77005, 77006, 77007, 77008.

Neighborhoods served in Houston: The Heights, Midtown, Montrose, Galleria, River Oaks — and every surrounding area.