AZ · City hub

Phoenix — modular, container,
and tiny homes in Arizona.

Phoenix is the country's fastest-growing ADU permit market. The 2023 Arizona statewide ADU legislation (HB 2720) preempted municipal bans, and Phoenix, Tempe, and Mesa have all rewritten their zoning to comply.

What the market looks like

Phoenix in 2026.

Arizona's HB 2720, effective January 2025, requires cities with populations over 75,000 to permit at least one ADU on all single-family lots. Phoenix has moved fastest — the city's 2024 zoning update allows detached ADUs up to 1,000 sq ft on lots of 5,000 sq ft or larger. Extreme summer heat drives builder specs: SEER-16+ split HVAC, high-albedo roofing, and R-30 wall assemblies are standard on modular sets. HUD Small-Area FMR covers all Maricopa County ZIPs. Modular and expandable-container products are the most common ADU form-factor here because factory-controlled envelopes handle the heat load more predictably than site-built.

Guides

Guides for Phoenix.

Guide

11 design tips for tiny homes in Phoenix

How to spec envelopes, glazing, and HVAC so a tiny or modular unit performs through 115°F summers.

Read → Guide

Why expandable container homes fit Phoenix ADUs

The form factor that shows up most in permitted Phoenix ADU builds, and why builders keep specifying it.

Read → Guide

Tiny homes for sale in Phoenix — 2026

Current inventory, price bands, and the communities that legally host tiny living around the Valley.

Read → Guide

Arizona backyard size benchmarks — 2026

What Maricopa County lot sizes mean for detached ADU siting under the new state framework.

Read →

Find a builder

Verified builders in Arizona.

ADU match

Find a verified ADU builder in Arizona.

License-verified, bond-verified, complaint-record-checked. One match within 24 hours. Free for buyers.

Get matched → Directory

Top modular home builders in Arizona — 2026.

The ranked builder directory PERCH publishes for Arizona, with product classes, code paths, and price bands.

Read the directory →

Financing

Financing paths in Arizona.

  • Arizona Industrial Development Authority (AzIDA) HOME+PLUS program offers down-payment assistance for owner-occupied ADUs and primary residences.
  • FHA 203(k) and Fannie Mae HomeStyle renovation loans are the most common path for financing detached ADUs on existing Phoenix single-family lots.
  • USDA Section 502 loans are available in Pinal and rural Maricopa tracts outside the Phoenix metro core.
  • Freddie Mac CHOICEHome and Fannie Mae MH Advantage products finance HUD-code manufactured and modular units on permanent foundations at conventional rates.
  • Solar-plus-storage add-ons are typically financed through separate PACE or Sunrun/Tesla financing structures to preserve loan-to-value on the primary mortgage.

Authoritative sources

HUD Arizona HomeownershipArizona Industrial Development Authority (AzIDA)City of Phoenix Planning & Development

Ready to move

Ready to buy or list in Phoenix?

Buyer

Take the Find Yours quiz.

Answer six questions and PERCH matches you to the housing typology — modular, manufactured, tiny, ADU, or container — that fits Phoenix and your budget.

Start the quiz → Seller / Investor

See what your Arizona home could earn.

Run a live PERCH Yield check on your ZIP. Gross rental yield calculated from HUD FY2025 FMR against Zillow ZHVI, sourced and cited on the page.

Run Yield →