The 10 ADU builders from Google's results for Scottsdale, Arizona, ordered by Google rating weighted by review count. No firm pays to be listed or ranked.
Last updated
Licensing in Arizona. Arizona contractors need a license from the Registrar of Contractors (ROC), and the ROC lookup shows complaints as well as status.
on GoogleSan Jose, CA
Bay Side Home Builders works as a design-build remodeler, with one crew carrying kitchen, bath and whole-home renovations from the initial design to the closing walkthrough. The company also takes on home additions, basement finishing and accessory dwelling units.
(408) 682-0554 385 Delmas Ave B, San Jose, CA 95126
on GoogleScottsdale
Maricopa Casitas builds attached and detached casitas and ADUs on single-family lots in Scottsdale, Arizona. The team reviews each lot against city size, placement and occupancy rules, takes the project through Scottsdale's pre-application and permit steps, then builds the unit.
on GoogleScottsdale, AZ
AFT Construction builds luxury custom homes in Scottsdale and the wider Phoenix metro area. Its work centers on high-end residential builds planned around the owner's lifestyle, with attention to budget, schedule and organized project management.
(480) 553-7873 15270 N 83rd Pl #200, Scottsdale, AZ 85260
on GooglePhoenix, AZ
AZ ADU builds backyard guest houses, casitas and accessory dwelling units in Phoenix. Its completed projects range from modern farmhouse exteriors to finished interiors with full kitchens, giving homeowners a separate living space on their existing lot.
(602) 757-9294 645 E Missouri Ave #250, Phoenix, AZ 85012
on GooglePhoenix, AZ
ADU Innovators designs and builds custom casitas and backyard units in the Phoenix area, including Scottsdale, Goodyear and Mesa. Projects are planned to meet Arizona's HB 2720 rules on attached and detached accessory dwelling units.
(623) 294-2855 3110 N Central Ave Suite D-160, Phoenix, AZ 85012
on GoogleScottsdale, AZ
Desert Star Construction builds high-end custom residences in Paradise Valley and Scottsdale, Arizona. The family-led company works with clients from early sketches through move-in, focusing on large residential builds designed as private resort-style properties.
(480) 951-4425 8144 E Cactus Rd Ste 840, Scottsdale, AZ 85260
Scottsdale, AZ
E-Project is an architecture practice designing ADUs and casitas in Scottsdale, Phoenix and across the Valley, including guest houses, attached suites and converted garages. Clients choose a custom design drawn to their lot or adapt a pre-engineered standard plan, with zoning and permit work included.
(480) 626-8648 6615 N Scottsdale Rd Ste 215, Scottsdale, AZ 85250
Scottsdale, AZ
Mission Design/Build designs and builds custom accessory dwelling units in the Scottsdale area, both attached to the main house and freestanding. Projects include guest houses, private living quarters, home offices, rental units and housing for multigenerational families.
(480) 974-1169 7345 E Evans Rd Ste 13, Scottsdale, AZ 85260
Phoenix, AZ
Serving both Tucson and Phoenix, CactusNectar is a residential general contractor working across Southern Arizona. It designs and builds home additions such as master suites and garage additions, and is also listed for ADU construction.
(480) 881-4192 2330 E Jones Ave, Phoenix, AZ 85040
Scottsdale
ERC is listed among ADU builders and house painters serving Scottsdale and the Phoenix area.
In Scottsdale, a garage conversion ADU typically costs $57,500 – $144,000. Remodeling labor in Scottsdale runs about 4% below the US median, which accounts for most of the difference from the same project elsewhere.
These are the firms from Google's results for "adu builders scottsdale", with directories, chains and suppliers removed. They are ordered by Google rating weighted by review count, and the ratings shown are Google's. No firm pays to be listed or ranked. The list was last updated in October 2026.
It depends on your city and state. California, Oregon and Washington have state laws that make ADUs allowed on most single-family lots. Elsewhere it is set by local zoning, so check lot size, setback and owner-occupancy rules with your city first.