Accessory dwelling unit services — Tempe, AZ | AccessoryDwellingUnit Services

Looking for accessory dwelling unit services 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 services cover the end-to-end process of adding a secondary home to your property. This includes initial zoning checks, architectural design, permit filing, and final construction. You need these services when you want to create a separate living space for family, guests, or as a rental unit, but don’t want to manage the complex legal and structural requirements on your own.

Frequently asked in Tempe

What are the disadvantages of ADUs in Tempe?

Potential disadvantages might include the upfront construction costs and the impact on your property's existing yard space. You should also consider any potential increase in utility bills. A local pro can help you weigh these factors for your specific Tempe property.

How much does an ADU cost in Arizona?

What are the rules for ADUs in Tempe?

Tempe has specific zoning ordinances that govern Accessory Dwelling Units, covering aspects like lot coverage, setbacks, and parking requirements. Compliance with these local rules is crucial for a successful project. A local specialist can clarify these details for you.

Is an ADU allowed in Tempe?

What's involved in building an ADU in Tempe?

Building an ADU involves design, obtaining permits from the City of Tempe, site preparation, and the construction itself. This includes foundation, framing, roofing, and interior finishes. The pros will manage the entire construction process to ensure it meets Tempe's building codes.

Can I get advice on ADU design for my Tempe home?

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, ASU Area, South Tempe, North Tempe, Tempe Village — and every surrounding area.