ADU Builder & Home Additions in Woodland Hills, CA
Source: https://www.remodelyourvibe.com/services/adus-additions/woodland-hills
Last modified: 2026-09-24T00:00:00.000Z
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Image: Open-plan living room and kitchen with polished concrete floors
- Woodland Hills
Design · Permit · Build
ADUs & Additions in Woodland Hills
Detached ADUs, garage conversions and additions, from plans to move-in.
Book a Consultation Call 818-300-2393
Built for Woodland Hills Homes
Woodland Hills gets hot, and that single fact should shape the whole design. A beautiful backyard nobody uses between June and September is a wasted investment, so shade, water and evening lighting matter more here than almost anywhere else in the Valley.
The flat lots north of the freeway have the depth to do it properly; the southern hillside parcels need engineering first.
Big suburban lots with genuine backyard depth, plus hillside view properties climbing toward the Santa Monica Mountains.
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 Woodland Hills: Private pools in the City of Los Angeles are permitted through a Combined Building-Mechanical permit, while pools serving more than two dwelling units need separate building, electrical, plumbing and mechanical permits. Using a City of Los Angeles standard plan on file with LADBS reduces plan check time.
Parcels in the southern hills sit in the Hillside Grading Area, and much of that area is mapped as a Very High Fire Hazard Severity Zone.
Permit details checked September 2026 against LADBS . Rules change, so we confirm them again for your parcel.
What We Build
- Shade structures and heat mitigation
- Hillside retaining and drainage engineering
- 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 Woodland Hills
These local conditions change the scope, the schedule and the budget.
01
Flat valley-floor lots north of the Ventura Freeway (single-family median about 9,500 square feet) take full backyard transformations well
02
Southern hillside parcels need engineered retaining and careful drainage design
03
Summer heat here is among the highest in the Valley, which pushes shade structures, misting and pool cooling up the priority list
Areas we serve in Woodland Hills:Warner Center
Investment
What It Costs in Woodland Hills
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 Woodland Hills property
The Process
How We Work in Woodland Hills
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 Woodland Hills that submittal goes to Los Angeles Department of Building and Safety (LADBS).
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 Woodland Hills Homeowners Ask
Who issues the permits for this work in Woodland Hills?
Los Angeles Department of Building and Safety (LADBS). Private pools in the City of Los Angeles are permitted through a Combined Building-Mechanical permit, while pools serving more than two dwelling units need separate building, electrical, plumbing and mechanical permits.
Using a City of Los Angeles standard plan on file with LADBS reduces plan check time. Parcels in the southern hills sit in the Hillside Grading Area, and much of that area is mapped as a Very High Fire Hazard Severity Zone. 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 Woodland Hills different?
Big suburban lots with genuine backyard depth, plus hillside view properties climbing toward the Santa Monica Mountains. One local condition that shapes the work: Flat valley-floor lots north of the Ventura Freeway (single-family median about 9,500 square feet) take full backyard transformations well.
Which parts of Woodland Hills do you work in?
All of it, including Warner Center. 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 Woodland Hills?
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 Woodland Hills
Pool & Spa Remodeling in Woodland Hills Backyard & Outdoor Living in Woodland Hills Kitchen, Bath & Interior Remodeling in Woodland Hills Plans, Permits & Design in Woodland Hills Everything we build in Woodland Hills
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Planning Guides
Before You Build in Woodland Hills
Costs, materials and process notes from our own projects.
New Pool Cost in Woodland Hills: Phase by Phase A new pool in Woodland Hills costs $85,000 to $160,000. This walks through every construction phase with real dollar figures and explains what hillside soils, caissons and Valley heat add. Read guide 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
Planning an ADU in Woodland Hills?
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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