Az-Adu

Accessory Dwelling Unit Builders Serving the Greater Phoenix Valley

AzADU is a licensed general contractor (ROC 351233) specializing in the design and construction of accessory dwelling units (ADUs) throughout the Greater Phoenix Valley. From backyard casitas to detached guest houses and in-law suites, they manage every phase of the project — from the initial site visit through to the final walk-through. Their mission is to help Arizona homeowners expand their lifestyle, accommodate family, and grow their property value through thoughtfully crafted ADU construction.

The team behind AzADU brings together decades of combined experience in Arizona housing, real estate, and residential development. Pat Moroney has been active in the single-family residential housing sector since 1982, with notable roles at DR Horton, Meritage, Standard Pacific, and New Home Company, as well as 16 years of service with the Home Builders Association of Central Arizona. Tom Mulhern has maintained an active presence in Arizona real estate since 1984, with a background spanning residential and commercial investment, brokerage, and property management. Luke Bevans holds a KB-2 Dual Residential and Small Commercial Contractors License and serves as the Qualifying Party for AZ-ADU Builders, LLC, with over 15 years of experience and oversight of more than 500 successful property flips in Maricopa County.

ADU Floor Plans Pre-Approved for the City of Phoenix

AzADU offers a curated collection of modern ADU floor plans that are pre-approved for the City of Phoenix, allowing homeowners to bypass lengthy architectural review periods and move directly into the permitting process. Their most popular plans include:

1. The Chameleon — A 400 sq ft studio unit ideal for short-term rentals, professional home offices, or additional recreational space.
2. The Bisbee — A 480 sq ft one-bedroom, one-bathroom unit designed for fully independent living, suitable for family members, guests, or long-term tenants.
3. The Camelback — A 756 sq ft one-bedroom, one-bathroom unit combining elevated architectural style with expanded living areas.

Each of these plans is permit-ready for the City of Phoenix, giving homeowners a faster path to groundbreaking. AzADU also builds backyard casitas suited as private guest retreats or pool houses, detached ADUs designed for premium rental income, multigenerational living spaces that function as mother-in-law suites, and modern home offices positioned steps from the main residence.

Their process is structured into four clear phases:

1. Discovery & Site Visit (Weeks 1–2): An introductory call followed by an on-site evaluation of utility connections and zoning eligibility, concluding with a comprehensive project proposal.
2. Permitting & Approvals (Months 1–3): Using pre-approved designs, they submit plans and manage all interactions with the Planning & Development Department.
3. Groundbreaking & Construction (Months 4–7): As the general contractor, they oversee all subcontractors and manage everything from foundation to desert-rated finishes.
4. Final Inspection & Move-In (Month 8): They coordinate the city's final inspections, secure the Certificate of Occupancy, and hand over the keys.

Navigating Arizona's ADU Laws: HB 2720 and HB 2928

Arizona's regulatory landscape for ADU construction changed significantly with the passage of HB 2720, known as the "Casita Bill," which removed many of the zoning barriers that previously made it difficult to build a guest house or backyard cottage. Building on this, HB 2928 expanded these rights statewide. As of January 1, 2026, these "by-right" laws are fully integrated into local city and county codes across Arizona.

Under the current framework, homeowners with single-family zoned lots are generally permitted to build at least one attached and one detached ADU without requiring special zoning variances. Key provisions include:

1. By-Right Development: No special zoning permission or neighbor approval required.
2. Full Rental Rights: Units can be rented to anyone — no familial occupancy requirement.
3. Full Kitchens Permitted: Explicitly allowed for all lot sizes under the new legislation.
4. No Extra Parking Mandates: Additional off-street parking is not required in most urban areas.
5. Standardized Sizes: Most lots allow units up to 1,000 sq ft or 75% of the primary home's size, whichever is smaller.

While state law has cleared the path, local utility and safety codes still apply. AzADU specializes in navigating these remaining technical requirements, ensuring every build is fully compliant with 2026 Arizona building codes. Their deep roots in Phoenix, Scottsdale, and Tempe give them a distinct advantage in understanding local zoning nuances and delivering projects that are both fast and compliant.