Looking for accessory dwelling unit companies 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

ADU companies provide end-to-end solutions, often integrating design, permitting, and construction under one roof. You need to engage a company when you want a streamlined experience and want to avoid the stress of hiring separate architects and builders. These companies handle the coordination of the entire project, ensuring that every phase of development transitions smoothly while keeping you updated on the progress and budget status of your new unit.

Frequently asked in Gilbert

What are the downsides of building an ADU in Gilbert?

How much does an ADU typically cost in Arizona?

The cost of an ADU in Arizona, including Gilbert, varies widely based on size, materials, and site preparation. Factors like foundation type and utility connections play a big role. Getting a personalized quote is the best way to understand your specific investment.

Are ADUs permitted in Gilbert neighborhoods?

Yes, Gilbert has specific zoning ordinances that allow for accessory dwelling units. These rules often cover lot coverage, setbacks, and parking requirements. The pros we work with are familiar with these regulations and can guide you.

What are the first steps to building an ADU?

Can I get a grant for an ADU in Arizona?

While some states offer ADU grants, specific grant programs can change. It's always worth asking about potential incentives or programs when you speak with the local ADU specialists. We can help you find out what's available locally.

What's the difference between a prefab and custom ADU?

Prefabricated ADUs are built off-site in sections and then assembled on your property, often faster. Custom ADUs are designed and built entirely on-site, offering more flexibility in design. The choice depends on your budget and timeline.

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, Heritage District, Agritopia, Gilbert Heights, Windsor Park — and every surrounding area.