Phoenix ADU contractor specializing in custom accessory dwelling units, garage conversions, granny flats & in-law suites. Tailored designs, eco-friendly materials & energy-efficient builds to maximize property value.

Linderoth Associates Architects

13430 North Scottsdale Road, Scottsdale, AZ 85254

Licensed Free Consultation In-House Architect

Linderoth Associates Architects offers ADU design services in Phoenix, including pre-designed prototypes with full construction documents and custom solutions like garage conversions, granny flats & backyard cottages.

Evereve Builders

Bullhead City, AZ 91752

23 years in business

Evereve Builders is a Southern California construction company led by Daniel Jimenez, with 23 years of experience. Specializing in ADUs, garage conversions, granny flats, and high-end residential builds.

Caine and Company

8040 East Morgan Trail, Scottsdale, AZ 85258

22 years in business Eco-Friendly Luxury Builds

Caine and Company is a Scottsdale-based design-build firm specializing in custom Casitas, guest houses, ADUs, and pool houses. Founded 22 years ago, they offer fixed-price contracts, in-house design, and full construction management across Phoenix, Scottsdale, and Paradise Valley.

SouthWest RPX

1246 North Los Alamos, Mesa, AZ 85213

SouthWest RPX offers ADU construction services in Phoenix, AZ. As an experienced ADU contractor, they handle planning, permitting, site prep, and finishing to build functional accessory dwelling units that add value and flexible living space.

Nu Wavz Homes

7319 South Atwood, Mesa, AZ 85212

Nu Wavz Homes is a California ADU contractor specializing in detached ADUs, garage conversions, JADUs, and in-law suites. They manage permitting, design, and construction, helping homeowners add living space or rental income.

Arizona Casita Builders

20866 W Werner Pl, Buckeye, AZ 85396

Arizona Casita Builders doesn’t just add square footage—we add real financial value. A well-designed casita increases your property’s market worth the moment it’s completed, creating instant equity and long-term return on investment. Whether you plan to use it for family, rental income, or lifestyle flexibility, your casita becomes an asset that grows in value as soon as the doors open.

Complete ADU Builders

40 East Adams Street, Tucson, AZ 85705

Complete ADU Builders offers basement and attached ADU conversions in Tucson, AZ. Basement ADUs cost $95K–$180K+; attached ADUs $135K–$250K+. Fully permitted, code-compliant units for rental income or multigenerational living.

Noble General Contractors

4001 East Broadway Road, Phoenix, AZ 85040

Noble General Contractors offers custom ADU construction and remodeling in Arizona. Services include detached ADUs, garage conversions, in-law suites, kitchen remodeling, flooring, framing, and more. Reliable, detail-focused builders serving Arizona homeowners.

Arizona Garage Builders

20866 West Werner Place, Buckeye, AZ 85396

25 years in business Free Consultation Turnkey Solutions

Arizona Garage Builders is an Arizona-based construction company with 25+ years of experience specializing in custom garages, RV garages, casitas, and accessory dwelling units (ADUs). They offer free 3D renderings and a 100% satisfaction guarantee.

Valleywide Dig & Haul

14435 North 7th Street, Phoenix, AZ 85022

Licensed Eco-Friendly Free Consultation

Valleywide Dig & Haul offers ADU construction in Phoenix Valley, including casitas, granny flats & garage conversions. Phoenix now allows backyard ADUs up to 1,000 sq ft. Licensed, bonded & woman-owned.

Cavco Phoenix

2502 West Durango Street, Phoenix, AZ 85009

Cavco Phoenix offers manufactured and modular homes as ADU solutions, including granny flats and backyard cottages. Factory-built for predictable costs and timelines, units vary in size. Local zoning verification is advised.

DwellWell Tiny Homes

Phoenix, AZ 85022

ADU Innovators

3110 North Central Avenue, Phoenix, AZ 85012

ADU Innovators is an Arizona ADU contractor serving the Phoenix area, offering turnkey design and construction of accessory dwelling units, casitas, and garage conversions. Pre-designed models range from 400–800 sq ft.

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What you need to know

ADU Contractors in Arizona: Building in the Desert Southwest

Arizona's unique climate and rapid population growth have made Accessory Dwelling Units (ADUs) an increasingly popular housing solution across the state. With scorching summers regularly exceeding 110°F in cities like Phoenix and Tucson, experienced ADU contractors in Arizona must design and build units that prioritize energy efficiency, proper insulation, and heat-resistant materials. The desert environment demands specialized construction knowledge, including the use of stucco exteriors, cool roofing systems, and high-efficiency HVAC solutions that can withstand extreme temperatures year-round.

Arizona ADU Regulations and Zoning Laws

In 2023, Arizona passed House Bill 2720, a landmark piece of legislation that significantly expanded ADU rights across the state. This law requires municipalities to allow ADUs on any single-family or multi-family residential lot, overriding many previously restrictive local zoning ordinances. Skilled Arizona ADU contractors must stay current with both state law and individual city requirements, as cities like Phoenix, Scottsdale, Tempe, and Tucson each maintain their own permitting processes and development standards. Key regulatory considerations include:

Setback requirements that vary by municipality
Maximum ADU size limitations, often tied to the primary dwelling's square footage
Owner-occupancy requirements, which differ by city
Utility connection and metering regulations
Parking requirements that may be waived near public transit corridors

What to Look for in an Arizona ADU Contractor

Choosing the right ADU contractor in Arizona is critical to ensuring your project is completed on time, within budget, and in full compliance with local codes. A reputable contractor should hold a valid Arizona Registrar of Contractors (ROC) license, which is required for all residential construction work in the state. When evaluating potential contractors, homeowners should look for:

Proven experience with ADU construction in Arizona's climate
Familiarity with local permitting processes in your specific city or county
A strong portfolio of completed ADU projects
Transparent pricing and detailed written contracts
Knowledge of energy-efficient building practices suited to desert environments

Types of ADUs Built by Arizona Contractors

Arizona ADU contractors typically build several types of accessory dwelling units depending on the homeowner's needs and lot configuration. Common options include detached ADUs, which are standalone structures separate from the main home, attached ADUs that share a wall with the primary residence, and garage conversions, which are especially popular in suburban Phoenix neighborhoods. Junior ADUs (JADUs), which are smaller units created within the existing footprint of a home, are also permitted under Arizona state law.

The Growing Demand for ADU Construction in Arizona

With Arizona's population continuing to grow and housing affordability remaining a top concern, the demand for qualified ADU builders in Arizona is stronger than ever. Whether you're looking to house a family member, generate rental income, or increase your property value, working with a licensed and experienced Arizona ADU contractor ensures your investment is protected and your project meets all state and local requirements.

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With over 1865 ADU Contractors in 50 US states - Top ADU Pros attempts to get you into contact with the best ADU Contractors near you.

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