New Detached ADU in Beverly Hills - One Fixed Price, Permits Handled

Fast, Reliable New Detached ADU Across Beverly Hills

A new detached ADU in Beverly Hills typically runs $285,000-$485,000 all-in, from permit set through final inspection, with the final figure driven by hillside fire-resistive requirements, tight-lot staging complexity, and whether existing detached structures carry non-conforming conditions. We’re the New Detached ADU team at Ellery ADU Studio Los Angeles, and our crews serve Beverly Hills from our metro office with the understanding that 90210 is its own permitting universe. Call (424) 551-7706 to schedule your free estimate.

Call (424) 551-7706

Why Ellery ADU Studio Los Angeles Is Beverly Hills’s Preferred New Detached ADU Company

We’ve designed, permitted, and built ADUs across the 90210 zip since 2015, and the pattern is consistent: homeowners arrive frustrated after discovering that their LA City contractor’s LADBS playbook doesn’t work here. Beverly Hills Building & Safety sits in City Hall on Santa Monica Blvd, staffed by plan checkers who interpret the Beverly Hills Municipal Code, not the Los Angeles code. Our permit sets are drawn for that specific audience.

Our 900+ ADU portfolio includes flat-lot Spanish Colonial Revival estates south of Sunset and hillside mid-century parcels north of it. Every project began with a written price before any work started, per Haven Standard Clause 1. Clients receive a documented photo record on every site visit, and our 365-Day Done Right Promise is backed in writing before the project starts.

Response time to Beverly Hills is same-week for initial site visits. Scheduling and dispatch are coordinated from our Los Angeles office, but the crew that arrives at your property knows the difference between a Benedict Canyon slope stability review and a flat-lot R-1 setback interpretation. A live person answers calls 24/7.

Nadia Ellery, our founder, reviews every Beverly Hills permit set personally before filing. The city’s conservative posture on densification means plan check rounds are methodical; we build that timeline into the written scope so you know when to expect the first correction set.

Our New Detached ADU Services in Beverly Hills

Custom Built ADU

Custom detached ADUs in Beverly Hills demand a permit set that anticipates the city’s design-compatibility expectations. On the flats, we match Spanish Colonial Revival massing and material palettes; on hillside lots in Trousdale-adjacent areas or Coldwater Canyon, we design for geotechnical review and Chapter 7A fire-resistive standards from the first drawing. Our in-house architects produce the construction documents, and our crews build from them under one contract at one written price. No designer-builder gap to exploit.

Prefab ADU Installation

We specify and coordinate prefab systems from Abodu, Cover, and Dvele within our single-contract model. In Beverly Hills, prefab delivery requires tight-lot logistics: crane windows negotiated with neighbors, driveway staging plans, and party-wall notice for shared property lines. We handle the transport permit, the crane permit, and the Beverly Hills Building & Safety permit as one scope. The written price includes all three.

Modular ADU

Modular construction in Beverly Hills makes sense for hillside lots where on-site construction duration amplifies access costs. Factory-built modules from Mighty Buildings or Dvele arrive with ignition-resistant siding and ember-resistant venting already integrated, satisfying Chapter 7A requirements for Very High Fire Hazard Severity Zones without field modification. We coordinate the module transport, crane set, and utility tie-in under the same written contract that covers the permit set.

Studio ADU

Studio detached ADUs on Beverly Hills R-1 lots are typically 400-550 square feet, positioned to respect the rear-yard setback interpretations that Beverly Hills enforces more conservatively than LA City. We model the shadow study and privacy impacts that the plan checker will review, and we price the foundation system for the specific soil condition, whether flat alluvial fill or decomposed granite on a Benedict Canyon slope.

1-Bed & 2-Bed ADU

One-bedroom detached ADUs in Beverly Hills run 550-750 square feet; two-bedroom units, 750-1,000 square feet. Both trigger the full Beverly Hills Municipal Code review, including parking replacement calculations and utility service adequacy. On tight lots off North Canon Drive or Roxbury Drive, we engineer the staging plan into the written scope: material delivery windows, crane schedules, and neighbor notification protocols. The price you sign includes this logistics line item.

Trusted Brands We Service in Beverly Hills

We specify and coordinate prefab and modular systems from Abodu, Cover, Dvele, Mighty Buildings, Boxabl, Plant Prefab, Tuff Shed, and James Hardie within our single-contract model. For Beverly Hills projects, James Hardie siding is our default specification for Chapter 7A compliance on hillside lots; the fiber-cement composition satisfies ignition-resistant requirements without the maintenance liability of wood alternatives. We maintain direct procurement relationships with these manufacturers, which means replacement components arrive on schedule if field conditions require a specification adjustment during construction.

Common New Detached ADU Problems We See in Beverly Hills Homes

• Assuming LADBS rules apply. Contractors familiar with LA City’s fast-track ADU pathway arrive in Beverly Hills expecting owner-builder exemptions and expedited inspections. Beverly Hills Building & Safety operates under its own municipal code; the plan check, interpretations, and inspection calendar reset entirely at the city limit. We price this regulatory reality into every written scope.
• Unpermitted prior work in existing detached structures. Many 1920s-1950s estates in the flats feature original two-car garages or early guesthouses with electrical, plumbing, or structural work that was never permitted. Beverly Hills will not issue the ADU permit until the existing condition is resolved. We identify this during the free estimate site visit and price the remediation as a separate, documented line item before you sign.
• Missing Chapter 7A triggers on hillside lots. Parcels in Benedict Canyon, Coldwater Canyon, and Trousdale-adjacent areas fall within Very High Fire Hazard Severity Zones. Ignition-resistant siding, ember-resistant venting, and tempered glazing add $18,000-$35,000 to a typical detached ADU. We flag this in the first permit set, not during construction.
• No staging plan for tight R-1 lots. Without a driveway delivery window, crane schedule, and party-wall notice for shared walls, the project becomes a neighbor relations failure before framing begins. Our written scopes include a logistics line item with specific dates and notification protocols.

Pricing for New Detached ADU in Beverly Hills, CA

We Also Serve Cities Near Beverly Hills

Our crews work throughout the metro core, including Beverly Hills adjacent areas: West Hollywood to the east, Culver City to the southwest, and Studio City and Sherman Oaks across the hills. Each city carries its own ADU ordinance and permitting timeline; we maintain current permit sets for all five jurisdictions.

FAQs - New Detached ADU in Beverly Hills