ADU Construction Services in the Phoenix Valley
Following recent amendments to the Phoenix housing code, homeowners across the valley are now permitted to build accessory dwelling units (ADUs) on their properties. Valleywide Dig & Haul offers ADU construction services throughout the Phoenix metropolitan area, helping property owners navigate the process from initial planning through to completion.
Whether the goal is a mother-in-law suite, a granny flat, a backyard cottage, a casita, or a general guest house, Valleywide Dig & Haul works with clients to build the type of ADU that fits their property and their needs.
What Is an Accessory Dwelling Unit?
An accessory dwelling unit is an independent living space that includes its own kitchen, bathroom, and bedroom. It can be located within the main residence or as a separate structure on the same property. Common forms include:
- Attached ADU – A structural addition built onto the side or rear of the primary home, sharing at least one wall with the main structure.
- Detached ADU – A fully separate structure on the property, not connected to the main house. Often used as a guest home, casita, pool house, or granny flat.
- Interior ADU Conversion – Built from existing underutilized space within the home, such as an attic or basement.
- Garage ADU Conversion – An existing garage is converted into a livable, self-contained unit.
Property owners typically build ADUs to house aging parents, adult children, or to generate rental income. With rising real estate costs in Phoenix and surrounding areas, ADUs have become an increasingly practical option for maximizing property value and utility.
ADUs also tend to have a smaller environmental footprint compared to full-sized homes. Their reduced size generally means lower energy consumption and fewer resources required, which can translate to lower utility costs over time.
Phoenix ADU Regulations and Requirements
The Phoenix City Council voted 8-1 to approve changes to the city's housing code to help address the affordable housing shortage. Key points of the updated regulations include:
- Owners of detached single-family homes may build an ADU in their backyard.
- The ADU must be connected to the sewer, water, and electricity of the primary home.
- Homeowners may rent the ADU, but must live in either the main home or the ADU themselves.
- ADUs must meet city approval and specific requirements, including a maximum size of 1,000 square feet for lots under 10,000 square feet.
- The structure cannot exceed 15 feet in height or be more than 75% of the size of the primary home.
- ADUs are also permitted in multi-family zoning areas, provided the unit is occupied by a single family.
Valleywide Dig & Haul assists clients in understanding and meeting these local requirements. Their team helps with permits, structural considerations, and compliance with Phoenix-area regulations throughout the construction process.
The company serves the broader Phoenix metropolitan area, including Glendale, Peoria, Goodyear, Avondale, Litchfield Park, Sun City, Scottsdale, Paradise Valley, Tempe, Surprise, Vistancia, Sun City West, and surrounding communities.
Valleywide Dig & Haul is a locally owned, licensed, bonded, and insured contractor. They are also a certified, woman-owned business with a stated commitment to recycling practices. Estimates are available at no obligation for those looking to explore an ADU construction project.