ADU Contractors in Arizona
Arizona Building Contractors
2231 West Diamond Street, Tucson, AZ 85705
Arizona Building Contractors, LLC is a locally owned contractor that builds custom ADUs, casitas, guesthouses, and garage conversions throughout the Tucson metro area. They help clients figure out what's possible and we see every project through f... read more
Evereve Builders
Bullhead City, AZ 91752
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.
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TRU ADU
515 East Grant Street, Phoenix, AZ 85004
TRU ADU is Arizona's trusted ADU builder, specializing in accessory dwelling units, in-law suites & backyard cottages. Their transparent 6-phase process covers site analysis to construction, delivering stress-free, high-quality builds statewid... read more
Bello Construction
PO Box 18, Gilbert, AZ 85299
Bello Construction, led by Narsay and Sami, specializes in home remodeling and additions. Known for quality workmanship, budget management, and clear communication, they handle projects like bedroom, bathroom, and in-law suite additions.
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Diamond Wright Construction
3110 N Central Ave, Phoenix, AZ 85012
Diamond Wright Construction is a licensed Denver remodeling contractor with 500+ projects completed. They specialize in ADU construction, kitchen & bathroom remodeling, basement finishing, home additions, and full renovations across the Denver... read more
DwellWell Tiny Homes
Phoenix, AZ 85022
Old Reliable Construction
Phoenix, AZ 85029
Old Reliable builds ADUs, casitas & granny flats across Arizona's Valley. As a design-build ADU contractor, they handle floor plans, permits & construction in-house, offering customizable layouts to add property value or rental income.
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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. Wheth... read more
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.
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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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Minimal Living Concepts
8280 East Gelding Drive, Scottsdale, AZ 85260
Phoenix-based ADU contractor Minimal Living Concepts offers turn-key Accessory Dwelling Units via a structured 8-month, three-phase process covering planning, permitting, and construction, with full feasibility reviews and transparent client commu... read more
Cactus Nectar LLC
2330 East Jones Avenue, Phoenix, AZ 85040
Easthope Design
Oro Valley, AZ 85755
Easthope Design, led by ADU specialist Richard Esteb, helps Fort Collins homeowners design accessory dwelling units, including garage conversions, granny flats & backyard casitas. 15+ years experience. Serving Northern Colorado.
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Handi Service
7014 East Camelback Road, Scottsdale, AZ 85251
Handi Services specializes in custom Casitas & ADUs, offering full-service design, permitting & construction. Boost property value, generate rental income & create flexible living spaces tailored to your needs.
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Mohave Homes Inc.
4311 Arizona 68, Golden Valley, AZ 86413
Mohave Homes Inc. offers quality manufactured & modular homes via Cavco Durango and Cavco West. Ideal for first-time buyers & retirees, they provide energy-efficient floor plans built to consistent construction standards.
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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.