ADUs & Additions in La Habra

City of La Habra Community and Economic Development Department, Building and Safety Division. Plan check, permits and inspections run through the Building and Safety Division at 110 East La Habra Boulevard, and plans are submitted through the city's online portal. The division's pool handout asks owners to confirm usable yard area and setbacks with Planning, check easements with Engineering and, where a homeowners association exists, bring its approval in with the plans. It keeps water at least five feet from side and rear property lines, requires a pre-site inspection approving the pool location before any excavation, and allows a pump and filter in a side yard only when they stay three feet from the house and ten feet from a neighbor's existing window or enclosed patio. Under LHMC 18.12.150 a new detached ADU may reach 1,200 square feet with four-foot side and rear setbacks and ten feet of separation from any other building on the lot, and it must use the same roof style as the main house. We prepare the drawings, make the submittal and handle plan-check corrections ourselves, so you are not the one chasing plan check.

In the R-1a, R-1b and R-1c single-unit zones the minimum lot area is 10,000, 7,200 and 5,500 square feet per home. Each home must also keep 1,000 square feet of usable yard, at least 15 feet across except for up to half of it at 12 feet, graded no steeper than five percent and free of parking, driveways and accessory buildings. Up on the southern hillsides, the General Plan counts the area near Westridge among the wealthiest in La Habra. One local condition that shapes the work: The General Plan maps the city's southern section, between the Westridge Golf Club and the city limits, as a Very High Fire Hazard Severity Zone, so decks, vents and cladding near that edge are worth specifying with ember exposure in mind.

All of it, including Westridge, La Habra Hills, North Hills and Downtown La Habra. Our crews run every job out of our Cahuenga Pass base in Los Angeles, with our own people on site.

Detached ADU: generally $150,000 to $400,000+ across Southern California. 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.