ADU Builder & Home Additions in West Hollywood, CA
Source: https://www.remodelyourvibe.com/services/adus-additions/west-hollywood
Last modified: 2026-09-24T00:00:00.000Z
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Image: Open-plan living room and kitchen with polished concrete floors
- West Hollywood
Design · Permit · Build
ADUs & Additions in West Hollywood
Detached ADUs, garage conversions and additions, from plans to move-in.
Book a Consultation Call 818-300-2393
Built for West Hollywood Homes
Space, not budget, is the binding constraint on most projects in this city. Lots are compact and flat, side yards are often too tight for an excavator, and pools frequently get dug with small equipment or craned in from the street. We check a building's age and status early, because historic review and, in multifamily buildings, tenant protection rules can reshape a scope. Staging strategy matters here as much as the drawings do.
Small, flat, densely built city lots (many occupied by duplexes, courtyard buildings and small apartment houses) with modest rear yards and limited or no side-yard access.
We are a design-build team, which means the people who draw your project are the people who build it. Design, engineering, permits and construction run through one project manager and our own crews, so nothing gets lost in a handoff between a salesperson and a subcontractor. We are licensed, bonded and insured, CSLB license #1119054 .
Permits in West Hollywood: This is an independent city, so building, electrical, plumbing and mechanical permits come from its own Building and Safety Division at City Hall on Santa Monica Boulevard, with applications filed through the city's online permitting and licensing portal.
There is no coastal zone here, but the city's cultural heritage preservation program can apply to older buildings and contributing structures in designated districts. Removal of mature canopy trees in connection with new development or a major remodel requires city approval, and street trees in the parkway are regulated under the municipal code chapter covering street trees and urban forestry.
Work in rent-stabilized multifamily buildings can additionally trigger tenant protection requirements.
Permit details checked September 2026 against City of West Hollywood and West Hollywood Municipal Code . Rules change, so we confirm them again for your parcel.
What We Build
- Crane-set and small-equipment pool builds
- Historic and multifamily compliance review
- Street staging and material logistics planning
- Detached ADUs, ground-up
- Garage conversions to living space
- Junior ADUs within the main house
- Room additions and bump-outs
- Second-story additions
- Full kitchens and bathrooms in the ADU
- Separate utility metering where required
- Private entries, patios and landscaping
- Plans, engineering and city submittals
- Title 24 energy compliance
Local Conditions
What to Know in West Hollywood
These local conditions change the scope, the schedule and the budget.
01
Side yards on compact flat lots are frequently too narrow for tracked equipment, so pool excavation runs on mini-machines or the shell is craned in from the street.
02
Dense curbside parking and short block faces leave little room for dumpsters, material drops and concrete trucks, making staging approvals part of the build plan.
03
Duplexes and small apartment buildings from the 1920s and 1930s often share walls and a single service panel, complicating added outdoor electrical and gas loads.
04
Rear yards are shallow, so spa, equipment enclosure and outdoor kitchen placement becomes a clearance and sound-attenuation problem before it becomes a design one.
Areas we serve in West Hollywood:Norma TriangleWest Hollywood WestSunset StripHarper Avenue Historic DistrictWest Hollywood Design DistrictWest Hollywood East
Investment
What It Costs in West Hollywood
Real Southern California price ranges, not teaser numbers.
Detached ADU
$150,000 to $400,000+
What moves it: square footage, finish level, utility runs, and site access; garage conversions typically run well below a ground-up detached build
Garage conversion ADU
$80,000 to $180,000
What moves it: whether the existing slab and framing meet current code, how far utilities have to run, and the finish level of the kitchen and bathroom
Plans, drawings and permit management
$4,500 to $25,000+
What moves it: project type and size, whether structural engineering, Title 24 or a soils report is required, and how many jurisdictions or review bodies are involved
Your lot, access and finishes set the price. We walk the site, then show you where every dollar goes.
Get a line-item price for your West Hollywood property
The Process
How We Work in West Hollywood
01
Feasibility
We check lot size, setbacks, utilities and access to confirm what your property will actually support.
02
Design & 3D
Layout, elevations and finishes, modeled in 3D so you approve the unit before submittal.
03
Plans & Permits
We prepare the full drawing set, handle engineering and Title 24, and manage the city submittal and corrections. In West Hollywood that submittal goes to City of West Hollywood Building and Safety Division (Community Development Department).
04
Foundation & Framing
Site prep, foundation, framing and dry-in by our own crews.
05
Systems & Finishes
Electrical, plumbing, HVAC, insulation, then kitchen, bath and interior finishes.
06
Final Inspection
We pass final inspection, walk the unit with you and hand over the keys.
Questions
What West Hollywood Homeowners Ask
Who issues the permits for this work in West Hollywood?
City of West Hollywood Building and Safety Division (Community Development Department). This is an independent city, so building, electrical, plumbing and mechanical permits come from its own Building and Safety Division at City Hall on Santa Monica Boulevard, with applications filed through the city's online permitting and licensing portal.
There is no coastal zone here, but the city's cultural heritage preservation program can apply to older buildings and contributing structures in designated districts. Removal of mature canopy trees in connection with new development or a major remodel requires city approval, and street trees in the parkway are regulated under the municipal code chapter covering street trees and urban forestry.
Work in rent-stabilized multifamily buildings can additionally trigger tenant protection requirements. We prepare the drawings, make the submittal and handle plan-check corrections ourselves, so you are not the one chasing plan check.
What makes building in West Hollywood different?
Small, flat, densely built city lots (many occupied by duplexes, courtyard buildings and small apartment houses) with modest rear yards and limited or no side-yard access. One local condition that shapes the work: Side yards on compact flat lots are frequently too narrow for tracked equipment, so pool excavation runs on mini-machines or the shell is craned in from the street.
Which parts of West Hollywood do you work in?
All of it, including Norma Triangle, West Hollywood West, Sunset Strip and Harper Avenue Historic District. Our crews run every job out of our Cahuenga Pass base in Los Angeles, with our own people on site.
What does an ADU or addition cost in West Hollywood?
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.
How long does an ADU take start to finish?
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.
Is a garage conversion cheaper than a detached ADU?
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.
Can I rent the ADU out?
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.
Do you handle the permits?
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.
More Services in West Hollywood
Pool & Spa Remodeling in West Hollywood Backyard & Outdoor Living in West Hollywood Everything we build in West Hollywood
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Planning Guides
Before You Build in West Hollywood
Costs, materials and process notes from our own projects.
ADU Cost Breakdown by Size in Los Angeles A detached ADU in Los Angeles runs $150,000 to $400,000-plus. Here is the real cost broken down by unit size, with the soft costs, utility work and finish decisions that move the number. Read guide Garage Conversion to ADU: The Step-by-Step Build A garage conversion runs $80,000 to $180,000 in Southern California. Here is the real sequence, from slab testing and plan check to the raised floor, the mini-split and final sign-off. Read guide ADU Rental Income Math in the San Fernando Valley A one-bedroom ADU in the San Fernando Valley rents for roughly $2,100 to $2,900 a month. Here is the honest arithmetic on payback, carrying costs and what the unit adds to the property. Read guide Second Story Addition vs Building Out: Which Costs Less Building out runs $350 to $500 per square foot. Going up runs $450 to $700. Here is when the cheaper option is actually the wrong one, and what drives each number. Read guide
Planning an ADU in West Hollywood?
Sit down with your project manager and get an accurate estimate. We call you back within one business day.
Book a Consultation 818-300-2393
Licensed, bonded & insured · CSLB license #1119054
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