ADUs and additions, Westlake Village, Los Angeles County

ADU Construction in Westlake Village

How a Westlake Village ADU handles the space or shared wall between it and the main house, ember care on mapped lots, and which office reviews the plans.

Ask for a lot review

We read every request ourselves and reply by phone or email with next steps for your lot. How we use your details.

To send, add what you are interested in, your first name and a phone number or an email.

Between a new ADU and the main house sits the piece of a Westlake Village plan we study hardest: the open ground or shared wall that separates the two homes. On an inland suburban lot that gap takes hard sun and dry wind like any open ground, and on a mapped fire hazard parcel it is also a path embers can travel. How each ADU type handles that separation shapes the feasibility comparison.

Separation for each unit type

A detached unit stands apart, and its distance from the house decides how much fire resistance the facing walls and eaves need, since closer buildings call for more. An attached unit shares a wall that has to be built as a rated assembly between two dwellings, with sound insulation packed into the cavity. A garage conversion depends on what already stands between the garage and the house, so we open a section of that wall before scoping it. A JADU connects through an interior door, and the rules let it share a bathroom with the main home.

The ground between, and plan review

Where the parcel is mapped for fire hazard, the ground between the two buildings deserves the same care as the walls. Plantings near the new unit can stay low and spaced apart, a wood fence can stop short of the wall with a metal gate section, and a deck can be replaced by concrete or pavers. Plans for a Westlake Village address go to the building department that serves the city, which reads them against the state ADU statutes, the city's zoning code and the building code. Thousand Oaks and Oak Park sit across the county line in Ventura County, so the parcel record is checked first.

Planning a unit in Westlake Village?

Send the address. We check which ADU types the lot allows and reply with the next step.