Cost of accessory dwelling unit — Glendale, AZ

Looking for cost of accessory dwelling unit in Glendale, AZ? Call AccessoryDwellingUnit Pros for a contact a provider — no obligation. Licensed adu builders serve Glendale and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU is a custom project, so costs vary based on your specific choices. Site conditions are the biggest factor; if your land requires significant grading, utility extensions, or foundation work, those expenses add up quickly. Choosing high-end finishes, custom cabinetry, or complex roof lines will also push the budget higher compared to a standard design. Prefabricated units often offer predictable costs, while custom site-built structures allow for more flexibility but can be harder to estimate upfront. Exact pricing confirmed free on the call.

About this service

The total investment for an ADU depends on several moving parts, including your property’s site conditions, the complexity of your site plan, and the high-end finishes you select. Whether you are building a detached cottage or converting a garage, costs vary based on utility connections and local labor rates. Exact pricing confirmed free on the call.

Frequently asked in Glendale

What are the disadvantages of ADUs?

The main disadvantages of ADUs can include the initial construction costs and potential for increased utility bills. Navigating Glendale's specific zoning and permitting process is also a key consideration. However, the benefits of added living space, rental income, and increased property value often make these drawbacks manageable.

How much does an ADU cost in Arizona?

What are the rules for ADUs in Arizona?

Arizona has state-level ADU laws, and Glendale also has its own specific zoning ordinances and building codes. These typically cover requirements for lot size, setbacks, and density. Local professionals are well-versed in these regulations and can ensure your project meets all requirements.

Is ADU allowed in Maryland?

This service focuses on Glendale, Arizona. Maryland has its own distinct regulations for accessory dwelling units that differ from Arizona's. If you require information on ADUs in Maryland, you will need to consult local authorities and resources within that state.

What are the rules for ADU in California?

California has enacted laws to encourage ADU development, but local rules still apply. These can involve requirements for parking and occupancy. For homeowners in Glendale, understanding Glendale's specific ADU ordinances is crucial for a successful project.

Also serving nearby: Phoenix · Surprise · Avondale · Tempe · Peoria

All cities in Arizona →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

253,855residents

3,781per sq mile

8ZIP codes served

Serving all of Glendale — population 253,855; about 3,781 residents per square mile across 67.1 sq mi. ZIP codes covered include 85301, 85302, 85303, 85304, 85305, 85306, 85307, 85308.

Neighborhoods served in Glendale: Arrowhead Ranch, South Glendale, Downtown Glendale, Cimarron, Westgate Entertainment District, Luke Air Force Base Area — and every surrounding area.