Accessory dwelling unit construction cost

Looking for accessory dwelling unit construction cost in Gilbert, AZ? Call AccessoryDwellingUnit Direct for a contact a provider — no obligation. Licensed adu builders serve Gilbert 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.

About this service

The amount you spend depends on the size of the unit, whether you are building from scratch or converting an existing structure, and the quality of your finish materials. Foundations, utility connections, and local labor rates also play a significant role. We provide exact pricing confirmed free on the call.

Frequently asked in Gilbert

What are the disadvantages of ADUs in Arizona?

Potential disadvantages in Arizona might include navigating specific city zoning ordinances, which can vary even within Gilbert. Permitting processes can also take time, and construction costs are a significant factor. However, the benefits of increased property value and rental income often outweigh these concerns for many homeowners.

How much does an ADU cost in Arizona?

The cost of an ADU in Arizona can vary widely based on size, materials, and complexity. Factors like foundation type, plumbing, and electrical work all play a role. It's best to get a personalized quote from a local pro who understands these variables in the Gilbert area. They can give you a clear picture of what to expect.

What are the rules for ADUs in Arizona?

Is an ADU allowed in Gilbert?

Yes, ADUs are generally allowed in Gilbert, Arizona, provided they meet the city's zoning and building requirements. These rules often address size, placement, and whether they can be attached or detached. Understanding these specifics is key, and that's where our local pros can help.

What's involved in ADU construction in Gilbert?

Also serving nearby: Chandler · Mesa · Tempe · Phoenix · Scottsdale

All cities in Arizona →

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

Service area details

275,411residents

4,011per sq mile

7ZIP codes served

Serving all of Gilbert — population 275,411; about 4,011 residents per square mile across 68.7 sq mi. ZIP codes covered include 85233, 85234, 85295, 85296, 85297, 85298, 85299.

Neighborhoods served in Gilbert: Power Ranch, Windham, Windsor Park, Alta Mesa, Springfield — and every surrounding area.