Accessory dwelling unit construction cost

Looking for accessory dwelling unit construction cost in Gilbert, AZ? Call AccessoryDwellingUnit Solutions 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 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

The cost of building an ADU depends on your choice of materials, the square footage, and whether you are doing a garage conversion or a new detached build. Site access and utility upgrades also play a big role in the final bill. Exact pricing confirmed free on the call.

Frequently asked in Gilbert

What are the disadvantages of ADUs in Gilbert?

Potential disadvantages can include increased utility costs and potential impacts on your existing yard space. You'll also want to consider how it affects your property taxes. Understanding these factors upfront is key. Call us for advice specific to your Gilbert property.

How much does an ADU cost in Arizona?

What are the rules for ADUs in Gilbert?

Gilbert has specific ordinances regarding ADU size, setbacks, and lot coverage. It's crucial to understand these before starting. Building codes must also be met for safety and permitting. We can point you towards the right information and pros who know the local rules.

Is an ADU allowed in Arizona?

Generally, Arizona law supports ADUs, but local city ordinances, like those in Gilbert, dictate specific requirements. These rules ensure ADUs integrate well into neighborhoods. Ensuring compliance is paramount. We work with pros who understand these regulations.

That specific grant is for California and doesn't apply directly to Arizona. However, there might be other local or state incentives you could explore. We can help you understand potential funding avenues relevant to Gilbert projects.

What are the rules for 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, Windsor Park, Meadow Vista, Gilbert Heights, Stonegate — and every surrounding area.