#1 ADU Contractor in Lakewood
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Finding the right adu contractor in Lakewood means understanding both the state rules that protect your project and the physical realities of the lot you are building on. California consolidated its ADU statutes into Government Code sections 66310 through 66342 in 2024, and those rules were updated again on January 1, 2026. Square footage is now measured as interior livable space. A local agency has 15 business days to determine whether your application is complete and 60 days to approve or deny it, and that approval is ministerial, meaning no public hearing and no discretionary design review.

In Lakewood, that application goes to the Building and Safety Division of the Community Development Department. Because Los Angeles County contains 88 incorporated cities, the agency and the counter change from one municipality to the next even when the underlying state rules do not. It is worth knowing that the county’s own ADU ordinance, which was 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 multifamily lots at two where state law allows up to eight. That ordinance governs unincorporated territory, not incorporated cities like Lakewood, but it is a clear reminder that a local handout is not always current with the statute.

No unusual local overlay applies in Lakewood, so the building code and the age of the house are what govern your project. That age matters considerably here. Nearly all of Lakewood’s housing went up between 1950 and 1953, with roughly 17,500 homes built at a pace of about one every seven and a half minutes before the city incorporated in 1954. Most are single-story, two or three bedroom tract houses drawn from a small set of repeated plans, with compact original kitchens at the rear.

That layout directly shapes where a detached unit can sit, how far utilities have to run, and whether a garage conversion or a new detached structure makes more sense for your particular parcel. We walk every lot and check setbacks, grade, equipment access, and utility routes before a single line gets drawn.

State law sets a floor that protects your project regardless of local conditions. A local agency cannot cap an ADU below 850 square feet of interior livable space, or 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, adding an ADU 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.