ADU Contractors in Arizona
Tiny Homes of Tucson
12490 N Lantern Way, Oro Valley, AZ 85755
Tiny Homes of Tucson is a trusted ADU builder in Arizona specializing in detached ADUs, garage conversions, casitas, pool houses & home offices. Full-service design, permitting & construction with flexible financing & workmanship warra... read more
Valleywide Dig & Haul
14435 North 7th Street, Phoenix, AZ 85022
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.
read more
Caine and Company
8040 East Morgan Trail, Scottsdale, AZ 85258
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... read more
Chandler General Contractor
6150 West Gila Springs Place, Chandler, AZ 85226
Unstoppable Construction
Tucson, AZ 85705
Tucson's dedicated ADU contractor, Unstoppable Construction, specializes in casitas, guest houses & garage conversions. With 60+ years combined experience, they deliver affordable, high-quality accessory dwelling units across Central Tucson.read more
Frei Remodeling
3830 East 44th Street, Tucson, AZ 85713
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.
read more
Arizona Garage Builders
20866 West Werner Place, Buckeye, AZ 85396
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... read more
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.
read more
Homework Remodels
4105 North 20th Street, Phoenix, AZ 85016
Homework Remodels builds custom ADUs in Phoenix & Scottsdale, AZ. From detached casitas to garage conversions, they handle design, permits, and construction for rental income, multi-gen living, or guest quarters.
read more
JDB Builders - Phoenix
4600 E Washington St, Phoenix, AZ 85034
JDB Builders Phoenix specializes in ADU construction, offering custom design, permitting, and construction management. Services include detached ADUs, guesthouses, in-law suites, and garage conversions, all built to local zoning codes.
read more
Cavco Goodyear
1300 South Litchfield Road, Goodyear, AZ 85338
Cavco Goodyear, AZ, offers manufactured & modular homes, including ADU, granny flat & Casita options. Factory-built for quality & speed, they serve Goodyear & greater Phoenix. Verify local zoning before purchase.
read more
Linderoth Associates Architects
13430 North Scottsdale Road, Scottsdale, AZ 85254
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.
read more
Az-Adu
645 East Missouri Avenue, Phoenix, AZ 85012
AzADU (ROC 351233) builds ADUs across Greater Phoenix Valley, offering pre-approved floor plans like The Chameleon, Bisbee & Camelback. Experts in Arizona ADU laws HB 2720 & HB 2928, they handle permits to move-in.
read more
Phoenix ADU Solutions, Inc.
3207 W Joan De Arc Ave, Phoenix, AZ 85029
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.
read more
Other cities in Arizona
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.