Accessory dwelling unit permit cost — Gilbert, AZ

Looking for accessory dwelling unit permit cost in Gilbert, AZ? Call AccessoryDwellingUnit Pros 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 is a custom project, so costs vary based on your specific choices. Site conditions are the biggest factor; if your land requires significant grading, utility extensions, or foundation work, those expenses add up quickly. Choosing high-end finishes, custom cabinetry, or complex roof lines will also push the budget higher compared to a standard design. Prefabricated units often offer predictable costs, while custom site-built structures allow for more flexibility but can be harder to estimate upfront. Exact pricing confirmed free on the call.

About this service

Permit fees are paid to your local municipality and fluctuate based on the specific city or county where your property is located. These costs cover plan reviews, impact fees, and safety inspections required to make your new space legal and compliant. Because every jurisdiction has a different fee structure, the final amount depends on your specific town’s regulations. We help you estimate these during the planning phase. Exact pricing confirmed free on the call.

Frequently asked in Gilbert

What are the disadvantages of ADUs?

Some disadvantages include potential zoning restrictions depending on your specific location in Gilbert, and the upfront investment required for construction. You'll also want to consider how it might impact your existing property's privacy. However, the benefits often outweigh these concerns for many homeowners.

How much does an ADU cost in Arizona?

The cost for an ADU in Arizona varies based on size, materials, and site conditions. Factors like foundation type and whether you need to connect to existing utilities in Gilbert will influence the final price. A personalized quote will give you the most accurate estimate for your specific project.

What are the rules for ADUs in Arizona?

Is an ADU allowed in Gilbert?

Yes, Gilbert generally allows accessory dwelling units. There are specific guidelines and requirements that must be met, which can include lot size and zoning. We can help you navigate these specific rules for your Gilbert property.

What is the permit cost for an ADU?

Permit costs for an ADU can range depending on the complexity of your project and the specific fees set by the city of Gilbert. These fees cover plan review and inspections to ensure compliance with building codes. A detailed quote will break down these potential costs.

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, Finley Farms, Windhaven, Windsor, Stonegate — and every surrounding area.