Beverly Hills ADUs,
Handled End to End

Most Beverly Hills lots qualify. California state law (Government Code §65852.2) requires every California city to allow at least one ADU on single-family residential lots, and Beverly Hills is predominantly zoned R-1 with several estate single-family districts (R-1.5X, R-1.6X, R-1.7X, R-1.8X) covering the Flats and the hillside. What changes per lot is the type and size of ADU that fits, plus how it reads from the street and from neighbors. A detached new-build is common on deeper lots in Trousdale Estates and Beverly Crest. An attached ADU shares a wall with the primary house and is useful when the rear yard is tight in the Flats. A garage conversion uses the existing detached-garage footprint and skips many setback rules — common throughout the older parts of the Flats. A Junior ADU (JADU) is carved out of the existing primary home, up to 500 sq ft with its own entrance and efficiency kitchen — often the right answer where the BHAC is sensitive to a new exterior structure, or on smaller lots in the Flats. We confirm zoning, hillside designation, and Architectural Commission review path at the first site visit and recommend the type that fits the property.

No. The City of Beverly Hills is its own incorporated city and issues ADU permits through the Beverly Hills Community Development Department, Building & Safety Division — not LADBS. We handle the Beverly Hills submittal, plan-check corrections, Beverly Hills Architectural Commission (BHAC) review where it applies, and final inspection — end to end. Important note: only properties inside Beverly Hills city limits go through the city. The Beverly Hills Post Office (90210) area also includes parts of the unincorporated Beverly Crest area in LA County, which is permitted through LA County Department of Public Works, not the city. We confirm jurisdiction by parcel at the first site visit.

The Beverly Hills Architectural Commission (BHAC) is the city's design-review body for exterior architectural design and signage. ADU projects in Beverly Hills typically clear standard ADU plan-check at Building & Safety. R-1 single-family design — particularly larger new construction and significant hillside projects — is reviewed under the city's R-1 design-review framework, which can route to BHAC, the city's Single-Family Design Review, or staff-level Architectural Review depending on project scope, parcel zone, and visibility. Detached new-build ADUs visible from the street, large attached additions, and projects in Trousdale or other estate districts are most likely to require Architectural Commission or design-review approval. Small garage conversions and interior JADUs typically do not. We confirm review path with city planning before drawings are finalized.

Three site-condition gates apply on top of standard ADU rules. (1) Hillside lots — generally north of Sunset Boulevard, in Trousdale Estates, and on the slopes of Beverly Crest — fall under the city's hillside development standards covering grading, building height measured from natural grade, retaining-wall height, and ridgeline impact. Hillside ADUs typically require a Hillside R-1 Permit pathway and are more design-intensive but remain buildable on most qualifying lots. (2) Hillside parcels north of Sunset and in adjacent canyons fall within a Very High Fire Hazard Severity Zone (VHFHSZ) and are treated as Wildland-Urban Interface (WUI) under Chapter 7A of the California Building Code — ignition-resistant siding and soffits, dual-pane tempered or multi-pane glazing, ember-resistant vents, Class A roof assembly, and defensible-space compliance. (3) Beverly Hills protects designated heritage and protected trees on private property; an ADU sited in the protected zone of a heritage tree can require arborist review, a tree-protection plan, or a shift in the building envelope. We confirm hillside, fire-zone, and tree status at the first site visit.

State law caps required side and rear setbacks at four feet for new detached or attached ADUs and waives setback requirements when you convert an existing garage in its footprint. Utilities are real work, not paperwork: Beverly Hills Public Works coordinates water and sewer service for new ADUs, and many older Beverly Hills homes need a panel upgrade before the ADU electrical load can land — we size that during design, not on the construction call. Sewer capacity check is part of the submittal. Title 24 (California Energy Code) applies in full: new detached ADUs and significant additions trigger solar PV requirements, mandatory high-efficiency envelope and HVAC, electric-ready provisions for cooking and water heating, and EV-charger-ready circuits where the ADU has parking. We design to Title 24 and CALGreen baseline from day one rather than retrofit at plan-check.

Timeline depends on scope, site conditions, and material lead times. Site visit and feasibility, design and drawings, plan-check, and construction are each scoped during consultation, and we provide a realistic schedule in writing once the design is set. Budget varies with ADU type (detached, attached, garage conversion, JADU), lot conditions, finish level, and any hillside, oak, historic, or HOA review that applies — we provide an itemized written quote after the site visit. Rental income varies by neighborhood, finish, and ADU type, and we model realistic numbers with you. Owner-occupancy: AB 670 and AB 671 mean a detached or attached ADU does not require the owner to live on the property, but JADUs continue to require owner-occupancy of one of the two units. Family use is straightforward — adult children, aging parents, in-law suite, work-from-home flex space — and ADUs configured as family units can later convert to rental without rebuild, provided the design anticipated that path. We provide a written cost breakdown at the consultation.