Accessory dwelling unit companies — Tempe, AZ

Looking for accessory dwelling unit companies 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.

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Frequently asked in Tempe

What are the disadvantages of ADUs?

Potential disadvantages of ADUs include the upfront construction costs, which can be substantial. You may also experience a reduction in your existing yard space or a change in privacy. It's also important to consider any potential increase in property taxes after the ADU is built. Discuss these with a professional during your consultation.

How much does an ADU cost in Massachusetts?

This page is about ADUs in Tempe, Arizona, not Massachusetts. ADU costs vary significantly based on location, size, and the materials used. Site preparation and utility connections are also major factors. For an accurate cost estimate in Tempe, you'll need to get a personalized quote from a local pro.

What are the rules for ADUs in California?

California has its own specific regulations for ADUs, which do not apply to Tempe, Arizona. Each state and city has unique requirements regarding zoning, setbacks, and permitting processes. It is crucial to work with local experts in Tempe to ensure your project complies with all applicable rules.

Is ADU allowed in Maryland?

Accessory Dwelling Unit regulations vary widely by location. This page focuses on ADUs in Tempe, Arizona. If you are interested in ADU legality in Maryland, you will need to research the specific ordinances for that state and its municipalities. We concentrate on Arizona projects.

What are the rules for ADU in California?

California's ADU laws are designed to facilitate construction, but local jurisdictions still have some oversight. This information is not relevant to Tempe, Arizona. For projects in Tempe, you must understand Arizona state laws and any specific city ordinances that apply. A local expert can provide the necessary clarity.

This grant information is specific to California and does not apply to projects in Tempe, Arizona. Funding opportunities for ADUs can vary significantly by region and program. When you call, ask the pros if they are aware of any current grants or financing options that might be available for your Arizona project. They can offer guidance.

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, Tempe West, South Tempe, Papago Park — and every surrounding area.