Adu Services in Tempe, AZ | AccessoryDwellingUnit Experts

Looking for adu services in Tempe, AZ? Call AccessoryDwellingUnit Experts 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 major project, and the final bill depends on a few key things. Site prep is a big factor; if your land is sloped or needs extensive utility connections, costs go up. The materials you choose—from siding to kitchen finishes—also change the math significantly. Whether you’re building a detached unit or converting an existing garage shifts the permit requirements and structural work needed. We provide exact pricing confirmed free on the call.

About this service

ADU services are the professional steps required to transform your backyard or garage into a functional living space. This process involves design consultations, structural engineering, and utility connections. You should look into these services if you are ready to increase your property value or need extra living space for relatives. We focus on making sure your project meets all safety codes and neighborhood regulations while fitting the specific design style of your main home.

Frequently asked in Tempe

What are the disadvantages of ADUs in Tempe?

The primary disadvantages often involve the initial construction investment and the time commitment for planning and building. You should also consider how an ADU might impact your existing yard space and the overall aesthetics of your property. Discussing these factors with knowledgeable professionals is recommended.

How much does an ADU cost in Arizona?

What are the rules for ADUs in Arizona?

Arizona has state legislation that supports ADU development, but Tempe has its own local zoning codes and design standards. These rules typically cover aspects like maximum dwelling size, setbacks, and parking provisions. Ensuring your plans meet both state and local requirements is crucial for approval. Local specialists can provide clarity.

Is an ADU allowed in Tempe?

Yes, accessory dwelling units are permitted in Tempe, provided they meet the city's established zoning and building regulations. These regulations address factors such as lot coverage, height restrictions, and architectural compatibility. It's important to review the city's guidelines or consult with an ADU expert to confirm your project's eligibility. They can help ensure compliance.

While there might not be a comparable large grant in Tempe, it’s worth inquiring about any available local or state incentives during your consultation. Professionals can often guide you toward potential financial assistance resources.

Can I build an ADU on my lot 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 District, Tempe Gardens, Shady Palms, Broadmoor — and every surrounding area.