Accessory dwelling unit contractor — Tempe, AZ

Looking for accessory dwelling unit contractor in Tempe, AZ? Call AccessoryDwellingUnit Pros for a contact a provider — no obligation. Licensed adu builders serve Tempe 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

A contractor manages the trades, materials, and timeline required to complete your backyard home. You need a contractor when you have design plans ready or need a lead to coordinate electricians, plumbers, and carpenters to get the structure move-in ready. They act as your project manager, ensuring that the work is finished on schedule and adheres to the building plans filed with your local municipality. Their role is essential for keeping the construction phase organized and safe.

Frequently asked in Tempe

What are the disadvantages of ADUs?

Potential disadvantages include the upfront construction costs, the impact on your existing yard space, and potential privacy issues. You should also consider how an ADU might affect your property taxes or insurance. The pros can help you weigh these factors.

How much does an ADU cost in Massachusetts?

This question is about Massachusetts, but ADU costs in Tempe, Arizona, depend on many local factors. Size, materials, and site complexity significantly influence the price. For an accurate cost, you need a custom quote from a Tempe contractor.

What are the rules for ADUs in California?

Is an ADU allowed in Maryland?

We are focused on Tempe, Arizona. ADU allowance and regulations are determined by local city ordinances. The pros serving Tempe can provide precise information on the rules applicable to your specific location within the city.

Grant programs for ADUs are often state or locally specific and their availability can change. It's best to ask the contractors in Tempe directly if they are aware of any current programs that might apply to your ADU project. They can help explore options.

What are the rules for ADUs in California?

California has laws to simplify ADU construction, but in Tempe, Arizona, local rules prevail. The pros understand these city-specific requirements, including zoning, setbacks, and permitting processes, ensuring your project is compliant with all regulations.

Also serving nearby: Chandler · Gilbert · Mesa · Phoenix · Glendale

All cities in Arizona →

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

Service area details

189,834residents

4,748per sq mile

8ZIP codes served

Serving all of Tempe — population 189,834; about 4,748 residents per square mile across 40.0 sq mi. ZIP codes covered include 85280, 85281, 85282, 85283, 85284, 85285, 85287, 85288.

Neighborhoods served in Tempe: Downtown Tempe, University District, Maple-Ash, Clark Park, Shady Park — and every surrounding area.