Affordable accessory dwelling unit — Tempe, AZ

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

Affordability in ADUs usually comes down to smart design choices, like using standardized floor plans or choosing efficient building materials that reduce labor time. You need this approach if you want to add living space for family or rental income without overextending your finances. We help you prioritize the features that matter most to keep costs manageable while maintaining high quality. Exact pricing confirmed free on the call.

Frequently asked 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

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: Maple-Ash Historic District, University District, The Lakes, Estrella, Broadmor — and every surrounding area.