Best accessory dwelling unit — Tempe, AZ | AccessoryDwellingUnit Solutions

Looking for best accessory dwelling unit in Tempe, AZ? Call AccessoryDwellingUnit Solutions 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 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 right ADU for your property is one that balances your functional needs with the existing architecture of your main home. A great unit maximizes natural light, offers a smart floor plan, and stays within your budget. Whether you need a home office, a rental space, or housing for family, the best unit is built to last and integrates well with your yard. Exact pricing confirmed free on the call.

Frequently asked in Tempe

What are the disadvantages of ADUs in Tempe?

Potential disadvantages include the permitting process, ensuring adequate utility hookups, and understanding how an ADU might affect your property taxes. Some homeowners also consider the construction timeline and any impact on their existing yard space. Discussing these with local experts is recommended.

How much does an ADU cost in Arizona?

The cost of an ADU in Arizona, and specifically in Tempe, varies based on size, design, and site conditions. Factors like foundation work, roofing materials, and interior finishes significantly influence the final price. A personalized quote from a local contractor is the best way to get an accurate estimate.

What are the rules for ADUs in Arizona?

Arizona has state laws that encourage ADUs, but cities like Tempe will have their own specific requirements. These can include rules on setbacks, lot coverage, and parking. The pros you connect with will be knowledgeable about Tempe's specific ordinances.

Is an ADU allowed in Maryland?

ADU regulations are state and city-specific, so what's allowed in Maryland would differ from Arizona. Each jurisdiction has its own rules. To find out about ADUs in Maryland, you'd need to research their local planning and zoning departments.

What are the rules for ADU in California?

California's ADU laws aim to simplify construction, but cities like Los Angeles or San Francisco might have unique local rules. These can relate to parking requirements, maximum unit size, and setbacks. Always confirm with local ADU specialists for the most accurate information.

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, The Lakes, Tempe Gardens — and every surrounding area.