Accessory dwelling unit companies — Tempe, AZ | AccessoryDwellingUnit Services

Looking for accessory dwelling unit companies in Tempe, AZ? Call AccessoryDwellingUnit Services 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 investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.

About this service

These companies provide comprehensive support for homeowners, often pairing design experts with construction crews to handle the entire project under one roof. They are helpful when you want to avoid hiring separate architects and builders. You should look into these companies when you want a streamlined experience and a single point of accountability for your backyard project from start to finish.

Frequently asked in Tempe

What are the disadvantages of ADUs in Tempe?

Disadvantages can include the initial construction costs and the need to comply with Tempe's specific building codes and zoning ordinances. You'll also want to consider any potential impact on your existing yard or parking. However, the long-term benefits often make it a worthwhile investment.

How much does an ADU cost in Arizona?

What are the rules for ADUs in Arizona?

Arizona has laws that encourage ADUs, but cities like Tempe also have their own specific regulations. These often cover aspects like maximum size, setbacks from property lines, and parking requirements. Working with local ADU specialists ensures your project adheres to all relevant rules.

Is ADU allowed in Maryland?

Yes, ADUs are permitted in Maryland, but the rules differ significantly by county and city. Anyone considering an ADU in Maryland would need to consult their local planning and zoning department. Local ADU professionals in Maryland are the best source for specific guidance.

While California has had grant programs, it's advisable to check with your local Tempe authorities or ADU builders about any available incentives or financing options in your area.

How do I find ADU companies in Tempe?

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 Neighborhood, The Lakes, Warner Ranch, Hudson Park — and every surrounding area.