Best accessory dwelling unit — Long Beach, CA
Last updated: September 24, 2026
What affects the price
Building an ADU involves several moving parts that shape your total investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.
About this service
Frequently asked in Long Beach
What's the biggest mistake when building an ADU in Long Beach?
Can I get an ADU quote in Long Beach today?
What are the permit requirements for ADU construction in Long Beach?
Are there ADU companies in Long Beach that can help?
What is the cost of an accessory dwelling unit in Long Beach?
Are there ADU building services near me in Long Beach?
What is ADU housing?
ADU housing refers to accessory dwelling units, which are secondary, independent living spaces on a single-family lot. They offer flexible housing solutions, such as for extended family, renters, or guests. In Long Beach, ADUs are a popular way to increase living space and property value.
Also serving nearby: Carson · Compton · Westminster · Norwalk · Huntington Beach
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Long Beach — population 449,468; about 8,870 residents per square mile across 50.7 sq mi. ZIP codes covered include 90801, 90802, 90803, 90804, 90805, 90806, 90807, 90808.
Neighborhoods served in Long Beach: Belmont Shore, Alamitos Beach, Rose Park, Naples, Downtown Long Beach, Bixby Knolls — and every surrounding area.
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