Cost of accessory dwelling unit

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

Last updated: September 24, 2026

Thinking about adding an accessory dwelling unit (ADU) to your property in Long Beach? It's a fantastic way to maximize your living space or generate additional income in a densely populated area like this. We often get calls from homeowners in neighborhoods like Belmont Shore or Naples who are exploring their options. The unique coastal environment and specific city regulations in Long Beach can sometimes seem complex. Many are surprised by the detailed permitting process and the specific requirements for ADUs here. It’s not just about the building itself; it’s about understanding how it fits into the fabric of Long Beach. That's why our purpose is to simplify this process for you. We aim to make it easy to get the information and professional guidance you need. Let us help you discover the potential an ADU holds for your Long Beach home. A quick call can be the first step toward making it a reality.

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

Building an ADU involves several variables that shift the total investment. Your site conditions, the type of foundation, and the quality of finishes you choose will dictate whether you land on the lower or higher end of the spectrum. Because every lot is unique, we provide a breakdown of your specific project requirements to ensure full transparency. Exact pricing confirmed free on the call.

Frequently asked in Long Beach

What are accessory dwelling unit construction costs in Long Beach?

What are homes with mother-in-law suites in Long Beach?

Homes with mother-in-law suites in Long Beach are properties that include a separate, self-contained living space. This suite is designed for independent living and typically features its own kitchen, bathroom, and sleeping area. These are essentially a type of accessory dwelling unit, offering flexible living arrangements for family members or potential rental income in Long Beach.

What are accessory dwelling unit construction requirements in Long Beach?

Can you help me find an ADU builder in Long Beach?

What is the cost of an accessory dwelling unit in Long Beach?

What are the permit requirements for an ADU in Long Beach?

What are homes with in-law suites in Long Beach?

Homes with in-law suites in Long Beach refer to properties that feature a separate, self-contained living space, often attached to or on the same lot as the main house. These suites are designed for independent living, typically including a kitchen, bathroom, and sleeping area. They are a popular type of accessory dwelling unit, providing flexible living arrangements in Long Beach.

Also serving nearby: Carson · Compton · Westminster · Norwalk · Huntington Beach

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

Service area details

449,468residents

8,870per sq mile

8ZIP codes served

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, Naples, Downtown Long Beach, Alamitos Beach, Bixby Knolls — and every surrounding area.