Room Additions · Beverly Hills
Room Additions in Beverly Hills, CA
Ground-floor bedrooms, primary suites and family rooms for period houses and hillside homes alike, with structure, roofline and permits resolved before any walls open.
- Licensed California general contractor
- Permits with the City of Beverly Hills
- Written, line-item estimates
- Design, engineering & construction
Beverly Hills, CA
Room Additions for Beverly Hills Homeowners
Room additions in Beverly Hills turn on three things the city will check: how much floor area the lot has left, how many bedrooms the house will have afterward, and whether the new work can be seen from the street. Simply Construction plans the addition around those limits, coordinates the architect and structural engineer, and builds it so the new rooms tie into the existing foundation, framing, roof and systems without looking tacked on. We work under a written contract, with progress payments tied to completed work as California law requires.
Local Knowledge
How Beverly Hills Rules Shape an Addition
Bedroom count carries unusual weight here. For Central Area houses, the code requires three parking spaces up to four bedrooms and four spaces once a house reaches five or six, so an addition that creates a fifth bedroom can bring a new parking requirement with it. Floor area is the other ceiling, and a house that earlier owners already enlarged may have little allowance left. We run both numbers before design begins.
Where the addition goes changes the review. A rear addition in the Flats that can't be seen from the street is generally handled through plan check, while a side or front addition visible from the street requires design review under Track 1 or Track 2. On a Spanish Colonial Revival or Tudor Revival house from the 1920s or 1930s, matching the roof tile, plaster texture, window proportions and eave details is what makes an addition read as original. If a listed master architect designed the house and it has reached 45 years of age, changes to its appearance can also trigger a 30-day permit hold.
What's Included
What a Room Addition Includes
- Floor area and bedroom-count review so the addition fits the lot and the parking requirement
- Structural design coordination for new foundations, shear walls and the tie-in to existing framing
- Roof integration that matches existing tile, slope and eave details on period-style houses
- Extension of electrical, plumbing and HVAC, with panel and water heater capacity checked
- Design review or plan check submittal, depending on whether the addition is visible from the street
- Protection of occupied rooms, dust control and daily cleanup while you live in the house
For the full scope, process and options, see our main room additions page, or browse everything we build on our Beverly Hills service area page.
Planning Considerations
Addition Choices to Settle Early
Building out or building up
A ground-floor addition keeps the house on one level and usually avoids reinforcing the existing structure, but it uses yard and floor area at the same time. Going up protects the garden but calls for engineering on the existing foundation. In Trousdale Estates the 14-foot height limit settles the question in favor of building out. Elsewhere we price both options when the lot allows it, so you compare real numbers rather than assumptions.
Matching an older house
Period houses in the Flats can include materials that are hard to match exactly, such as clay roof tile, steel casement windows, hand-troweled plaster and patterned hardwood floors. We source salvaged or matching materials where possible and plan clean transitions where they are not, such as a break at a doorway instead of a patch in the middle of a floor. Commissioners look at these details on street-facing work, and neighbors notice them everywhere else.
Why Choose Us
Why Beverly Hills Homeowners Choose Simply Construction
Licensed, Bonded and Easy to Verify
Simply Construction inc. is a licensed California general contractor, CSLB [CSLB LICENSE # PLACEHOLDER]. State law requires a license for any job of $1,000 or more in labor and materials, and anyone can check a contractor's license, bond and workers' compensation status on the CSLB website in about a minute. We encourage every Beverly Hills homeowner to do exactly that before signing with anyone, including us.
Straight Answers on Feasibility
Some lots cannot fit the project an owner has in mind. We check zoning, setbacks, height limits, easements, slope and utility capacity early, and we tell you plainly what is achievable before you spend money on full drawings. When state law opens a path that the local code seems to block, as ADU and SB 9 rules often do, we explain how it applies to your property.
Built to Current California Energy Code
New homes and ADUs in California are built to the Title 24 energy code, which has required solar PV on most new single-family homes since 2020, and permit applications filed on or after January 1, 2026 fall under the 2025 Energy Code. We plan insulation, windows, mechanical systems and solar into the design from the start instead of treating compliance as a late fix.
More in Beverly Hills
Other Services in Beverly Hills
Nearby
Room Additions Near Beverly Hills
FAQ
Room Additions in Beverly Hills: Common Questions
Does adding a bedroom in Beverly Hills change my parking requirement?
It can. In the Central Area, a house with up to four bedrooms needs three parking spaces, and one with five or six needs four. An addition that pushes the count to five therefore adds a space to the requirement. We check your current bedroom count and site layout before design so the extra space is planned rather than discovered in plan check.
Can we live in the house during a room addition?
Usually, yes. Most of the early work happens outside the existing walls, and we keep the opening into the house sealed until the new rooms are dried in. The disruptive stretch is the tie-in, when a wall comes out and systems are connected. We schedule that in advance and tell you which days will affect power, water or access.
Will my addition need a public hearing?
Only when it is visible from the street in the Central Area and falls short of the Track 1 criteria, which call for a California-licensed architect and one of the pure styles in the city's guide. Those projects are approved by staff instead. Rear additions that can't be seen from the street generally skip design review, and the Hillside Area has none.
Start Your Project
Planning a Room Addition in Beverly Hills?
Tell us about your property and goals. We will walk the site, flag anything the City of Beverly Hills will care about, and give you a written, line-item estimate.
Licensed California General Contractor · CSLB [CSLB LICENSE # PLACEHOLDER]