ADUs & Additions in Hermosa Beach

City of Hermosa Beach Community Development Department, Building and Safety Division. Building permits, plan check and inspections come from the Building and Safety Division within the City's Community Development Department, with zoning review handled by the Planning Division. In the Coastal Zone a Coastal Development Permit is required in addition to the building permit, and those permits are processed through the California Coastal Commission's South Coast District after the City has approved a project in concept. Common triggers include new development, increases in floor area or height beyond ten percent, intensification of use, and work affecting coastal resources or a site with a prior coastal permit. Duration varies with the scope and the coastal review path. We prepare the drawings, make the submittal and handle plan-check corrections ourselves, so you are not the one chasing the city.

Predominantly narrow rectangular lots, many about thirty feet wide with compact rear yards near the beach, and larger, more conventional parcels east of Pacific Coast Highway in the valley and hills. In practice that means beach-side parcels sit on deep sand, so excavation for a pool, spa or subterranean level needs shoring and a soils-driven foundation approach rather than a standard footing..

All of it, including Sand Section, The Strand, Hermosa Valley, Hermosa Hills. We are based in Los Angeles at Cahuenga Pass, so Hermosa Beach is a short run for our crews rather than a job we service from out of the area.

Detached ADU in this market generally runs $150,000 to $400,000+. What moves it is square footage, finish level, utility runs, and site access; garage conversions typically run well below a ground-up detached build. We give line-item pricing after seeing the site rather than quoting a number over the phone.

Plan a realistic year. Design and engineering typically take one to three months, city plan check and corrections add several more, and construction usually runs four to eight months depending on size and site access.

Usually yes, and often substantially, because the foundation, walls and roof already exist. The trade-offs are that you lose the garage, and older slabs and framing sometimes need upgrading to meet current code.

California ADU law is designed to allow long-term rental, and an ADU is one of the few ways to add rentable square footage to a single-family lot. Short-term rental rules vary by city, so confirm your local ordinance before counting on that income.

Yes. Plans, engineering, Title 24 and the city submittal are all handled in-house, including responding to plan-check corrections. That is a service we sell on its own, so it is not something we hand off.