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If you are planning to add a unit to your property, working with an experienced adu contractor in Long Beach means understanding both the state rules that apply everywhere in California and the local details that are specific to this city. California consolidated its ADU statutes into Government Code sections 66310 through 66342 in 2024, and those rules changed again on January 1, 2026. Square footage is now measured as interior livable space. Once you submit an application, the reviewing agency has 15 business days to determine whether it is complete and 60 days to approve or deny it. Approval is ministerial, meaning no public hearing and no discretionary design review.

In Long Beach, that application goes to the City of Long Beach Community Development Department Building and Safety Bureau. If your parcel sits inside the coastal zone, you will also need a local coastal development permit or a categorical exclusion from the city, and some mapped areas remain subject to appeal before the California Coastal Commission. That is a layer of review that does not apply in most inland cities, so it is worth confirming your parcel’s status early in the planning process rather than after drawings are complete.

Los Angeles County contains 88 incorporated cities, and the agency at the counter changes from one to the next even when the underlying state rules do not. The county’s own ADU ordinance, amended in July 2025, was found non-compliant with state law by the California Department of Housing and Community Development in December 2025. Among other findings, it caps detached ADUs on a multifamily lot at two where state law permits up to eight. That ordinance covers unincorporated territory rather than Long Beach itself, but it serves as a useful reminder that a local handout is not always current with the statute.

Long Beach was built in distinct eras, from the 1897 incorporation and the 1920s oil boom through the heavy postwar construction of the 1940s and 1950s. The housing stock varies considerably by district. A 1920s bungalow in California Heights or Bixby Knolls sits on a very different parcel than a postwar tract house in the north of the city, and that difference shapes where a detached unit can go, how far utilities have to run, and whether a garage conversion or a new build is the more practical path. We walk the parcel and check setbacks, grade, equipment access, and utility routes before anything gets drawn.

State law sets a floor of protections that apply regardless of where your lot sits. A local agency cannot cap an ADU below 850 square feet of interior livable space, or below 1,000 square feet if the unit has more than one bedroom. Side and rear setbacks cannot exceed four feet. Owner-occupancy cannot be required as a condition of building an ADU. Adding a unit cannot trigger a fire sprinkler retrofit of the main house. And there are no impact fees on a unit of 750 square feet or less. Contact us to request a free estimate and we will start by reviewing your specific parcel.