Last updated: September 24, 2026
What affects the price
Building an ADU involves variables that shift your total investment. The footprint size and complexity of the architectural design are primary factors. Are you planning a detached unit that requires new utility trenching, or is this a garage conversion that uses existing plumbing? Site accessibility, soil conditions, and your choice of finishes—like luxury flooring versus standard options—also play significant roles. Permitting fees vary widely depending on your local municipality and current zoning requirements. Exact pricing confirmed free on the call.
About this service
Securing permits is a mandatory step that covers city review fees, impact fees, and inspections to ensure your build meets safety codes. These costs vary significantly by city and the scope of your specific project. Because local jurisdictions set their own fee structures, we assist you in estimating these expenses during our initial consultation. We ensure you have a clear picture of all regulatory requirements before you begin. Exact pricing confirmed free on the call.
Frequently asked in Phoenix
What are the disadvantages of ADUs in Phoenix?
In Phoenix, disadvantages of adding an ADU might include navigating the city's permitting and inspection process, which can take time. You'll need to consider local zoning ordinances, potential impacts on your property's water usage, and ensuring adequate parking. Some homeowners may also be concerned about the initial construction costs.
How much does an ADU permit cost in Phoenix?
The cost of an ADU permit in Phoenix varies based on the size and complexity of the ADU project, as well as the specific fees charged by the city. These fees typically include building permits, plan reviews, and any required inspections. Getting a professional quote is the best way to understand these costs.
What are the rules for ADUs in Phoenix?
Phoenix has clear regulations for ADUs, generally allowing them on lots with existing single-family homes. Rules often address setbacks, lot coverage, and ensuring the ADU is a subordinate structure. It's important to consult the city's zoning ordinances for precise requirements regarding size and placement.
Is an ADU allowed in Phoenix?
Yes, accessory dwelling units are allowed in Phoenix, and the city has specific guidelines in place to facilitate their construction. Phoenix encourages ADUs as a way to increase housing options within existing neighborhoods. Ensuring compliance with all local building codes and zoning laws is essential.
What are the rules for ADUs in California?
California has statewide ADU laws designed to streamline the process, often limiting local governments' ability to deny ADU applications based on objective standards. Key rules include size limitations, restrictions on owner occupancy for certain ADU types, and setback requirements. Specific requirements can still vary by local jurisdiction.
This program aims to help offset upfront costs associated with building an ADU. Eligibility requirements and application details are managed by specific state agencies and can change.
Also serving nearby: Glendale · Scottsdale · Tempe · Peoria · Surprise
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Phoenix — population 1,650,070; about 3,183 residents per square mile across 518.3 sq mi. ZIP codes covered include 85001, 85002, 85003, 85004, 85005, 85006, 85007, 85008.
Neighborhoods served in Phoenix: Arcadia, North Phoenix, Downtown Phoenix, Scottsdale (nearby), Tempe (nearby), Glendale (nearby) — and every surrounding area.
Areas we serve
Browse by state, then city.
Alabama (4)
All of Alabama · Birmingham · Huntsville · Mobile · Montgomery
Alaska (1)
Arizona (8)
All of Arizona · Chandler · Gilbert · Mesa · Peoria · Phoenix · Scottsdale · Tempe · Tucson
Arkansas (1)
California (29)
All of California · Anaheim · Bakersfield · Chula Vista · Elk Grove · Fontana · Fremont · Fresno · Garden Grove · Glendale · Huntington Beach · Lancaster · Long Beach · Los Angeles · Modesto · Moreno Valley · Oakland · Oceanside · Ontario · Oxnard · Rancho Cucamonga · Riverside · Sacramento · San Bernardino · San Diego · San Francisco · San Jose · Santa Clarita · Santa Rosa · Stockton
Colorado (4)
All of Colorado · Aurora · Colorado Springs · Denver · Fort Collins
District of Columbia (1)
Florida (9)
All of Florida · Cape Coral · Fort Lauderdale · Hialeah · Miami · Orlando · Pembroke Pines · Port St. Lucie · Tallahassee · Tampa
Georgia (3)
All of Georgia · Atlanta · Augusta-Richmond County · Columbus
Hawaii (1)
Idaho (1)
Illinois (2)
Indiana (2)
Iowa (1)
Kansas (2)
Kentucky (2)
All of Kentucky · Lexington-Fayette · Louisville/Jefferson County
Louisiana (3)
Maryland (1)
Massachusetts (1)
Michigan (2)
Minnesota (2)
Missouri (3)
Nebraska (2)
Nevada (4)
All of Nevada · Henderson · Las Vegas · North Las Vegas · Reno
New Jersey (1)
New Mexico (1)
New York (4)
All of New York · Buffalo · New York · Rochester · Yonkers
North Carolina (7)
All of North Carolina · Cary · Charlotte · Durham · Fayetteville · Greensboro · Raleigh · Winston-Salem
Ohio (4)
All of Ohio · Akron · Cleveland · Columbus · Toledo
Oklahoma (2)
Oregon (3)
All of Oregon · Eugene · Portland · Salem
Pennsylvania (2)
Rhode Island (1)
South Dakota (1)
Tennessee (5)
All of Tennessee · Chattanooga · Clarksville · Knoxville · Memphis · Nashville-Davidson metropolitan government (balance)
Texas (13)
All of Texas · Amarillo · Arlington · Brownsville · El Paso · Fort Worth · Frisco · Garland · Grand Prairie · Houston · Lubbock · McKinney · Plano · San Antonio
Utah (1)
Virginia (4)
All of Virginia · Newport News · Norfolk · Richmond · Virginia Beach
Washington (4)
All of Washington · Seattle · Spokane · Tacoma · Vancouver
