ADU construction · Woodland Hills, CA

Woodland Hills ADUs,
Handled End to End

Detached ADUs, attached ADUs, garage conversions, and Junior ADUs — designed, permitted, and built. Licensed, insured, and locally owned since 2010. CSLB #972213.

5.0 / 5 on Houzz 17 verified reviews
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CSLB LicensedLicense #972213
5.0 on Houzz17 verified reviews
Family-OwnedLicensed since 2010
24-Hour ResponseFree in-home estimate
Woodland Hills PermitsLADBS · Valley branch · in-house
Why Hillstar

Why Woodland Hills Homeowners Choose Hillstar

Licensed and insured since 2010, with a 5.0 Houzz rating, we've refined every step of the ADU process — design, LADBS submittal, construction, and final inspection — so the project finishes on schedule and on budget.

On-Time Delivery

Predictable execution. Milestones agreed during design and tracked to completion — no surprises mid-build.

Transparent Pricing

Itemized written quotes upfront. Scope changes documented and priced. No surprise allowances.

Title 24 & CALGreen Built-In

Solar PV, high-efficiency envelope, electric-ready cooking and water heating, EV-ready circuits. Code-compliant from day one, not retrofit at plan check.

Local Woodland Hills Experts

Daily work with LADBS (Valley branch on Sepulveda), the LA Office of Historic Resources where HPOZ-affecting, the LA Baseline Hillside Ordinance pathway on hillside parcels, LA's protected-tree ordinance, LADWP service coordination, and Chapter 7A fire-zone compliance on Very High Fire Hazard parcels.

Workmanship Guarantee

Written workmanship warranty on every Hillstar Woodland Hills ADU — foundation through certificate of occupancy. Honored, in writing.

One Team, One Contact

Same in-house crew from design to final inspection. One point of contact — no handoff confusion.

Our process

How It Works — Simple & Stress-Free

A proven four-step path from first site visit to a finished Woodland Hills ADU.

1

Free In-Home Consultation

We come to your Woodland Hills property, walk the lot, check zoning, hillside classification, HPOZ status, protected trees, and feasibility — no pressure, no sales pitch.

2

Design & Permits

Floor plans, elevations, site plan, and a written scope. LADBS submittal under California’s statutory ADU review process. LA Office of Historic Resources, hillside, and LADWP coordination run in parallel where they apply.

3

Build & Inspections

Foundation, framing, plumbing, electrical (including any panel upgrade), Title 24 envelope, finishes — all by our crew. We schedule and meet every LADBS inspection through certificate of occupancy.

4

Walkthrough & Warranty

Final walkthrough with you, punch-list completion, and Hillstar Construction's workmanship guarantee.

Local conditions

Permits, Lots & What's Specific to Woodland Hills

Woodland Hills sits inside the City of Los Angeles, which means LADBS jurisdiction with a strong Valley-side intake — but the lot conditions a Woodland Hills owner sees on the ground are not the same as Encino, Pasadena, or Beverly Hills. Here's what we plan around before drawing.

Permit jurisdiction

LADBS Valley branch on Sepulveda handles plan check, electrical, plumbing, and final inspections for every Woodland Hills address. LADWP coordinates separated or shared utility service. The City of LA Standard ADU Plan Program is open to Woodland Hills lots, which can shave weeks off plan check on a code-conforming detached design.

Lot & zoning patterns

Walnut Acres and Vista de Oro tend to deeper lots that suit detached new-builds. South of the Boulevard ranges from compact R1 flats to deeper lots near Warner Center. Hillside parcels north of the boulevard fall under the LA Baseline Hillside Ordinance — grading, height, and slope-stability rules add design constraints, not deal-breakers.

Design overlays you'll see here

HPOZ does not apply broadly in Woodland Hills, but parts of the area sit inside Very High Fire Hazard Severity Zones, triggering Chapter 7A WUI requirements (ignition-resistant siding, ember-resistant vents, Class A roof, defensible-space compliance). Some hillside tracts also have HOA architectural review running parallel to the LADBS permit — we file both tracks together.

Reviews

What Woodland Hills-Area Homeowners Are Saying

Verified Houzz reviews from recent Hillstar Construction projects.

“Lior is very personable and has many decades of construction experience. We appreciated his sincere evaluation of our project.”

Ann AnterasianHouzz · April 2019

“Lior is a fantastic general contractor. He has tremendous work ethic and strong attention to detail.”

J. GlaserHouzz · June 2017

“Hillstar's crew was courteous, prompt, and worked hard to make every detail exactly what we wanted.”

Hillstar ClientHouzz · Verified
5.0 · 17 verified reviews on Houzz
FAQ

Woodland Hills ADU — FAQ

Lot eligibility, ADU types, LADBS permits, hillside rules, HPOZ designations, tree protection, fire zones, setbacks, utilities, Title 24, timeline, budget, rental income, and family use — straight answers for your Woodland Hills lot.

Does my Woodland Hills lot qualify for an ADU, and what type fits — detached, attached, garage conversion, or JADU?
Most Woodland 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 Woodland Hills is part of the City of Los Angeles — LA accepts ADUs by-right on single-family parcels and on most multifamily lots under state law. What changes per lot is the type and size of ADU that fits. A detached new-build is common on deeper lots in Walnut Acres, Vista de Oro, South of the Boulevard, Warner Center-adjacent. An attached ADU shares a wall with the primary house and is useful when the rear yard is tight. A garage conversion uses the existing detached-garage footprint and skips many setback rules. 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 when the rear yard is too tight for detached or when an HPOZ or HOA layer constrains the exterior envelope. We confirm zoning, LA Baseline Hillside Ordinance status, HPOZ designation, fire-zone classification, and protected-tree inventory at the first site visit and recommend the type that fits the property.
Where do I get a Woodland Hills ADU permit — is it LADBS?
Yes. Woodland Hills is part of the City of Los Angeles, and LADBS — the Los Angeles Department of Building and Safety — issues every residential ADU permit here. The Valley branch on Sepulveda processes Woodland Hills plan check and inspections for Valley addresses. We handle the LADBS submittal, plan-check corrections, Office of Historic Resources review where it applies, LADWP coordination, and final inspection — end to end.
Do hillside rules or HOA architectural review affect Woodland Hills ADU work?
Two layers can apply on top of the LADBS plan check on Woodland Hills ADU projects. (1) Hillside parcels — Walnut Acres and Vista de Oro hillside parcels (LA Baseline Hillside Ordinance), plus a few CC&R-driven HOAs in the hillside tracts — fall under the LA Baseline Hillside Ordinance, which adds grading, height, and slope-stability provisions plus geotechnical review. (2) Many neighborhoods carry HOA architectural review committees or CC&R-driven design rules covering exterior materials, roof form, fence and gate detail, and visibility from common areas. Interior or garage-conversion ADUs typically pass HOA review without complication. When a detached new-build touches the exterior envelope or alters visible massing, the HOA architectural-review submission runs in parallel with the LADBS permit so both tracks finish on one timeline. We handle both submissions on behalf of the homeowner.
How do hillside rules, tree protection, and fire zones affect ADU design in Woodland Hills?
Three site-condition gates apply on top of standard ADU rules, where they apply to a given parcel. (1) The LA Baseline Hillside Ordinance covers parcels classified hillside — adding grading, slope-stability, height, and design provisions plus haul-route planning where applicable. Hillside ADUs are more design-intensive but remain buildable on most qualifying Woodland Hills lots. (2) LA's protected-tree ordinance covers oaks, sycamores, walnuts, and bay trees on private property — an ADU sited in the root-protection zone can require arborist review, a tree-protection plan, or a shift in the building envelope. (3) Parcels in a Very High Fire Hazard Severity Zone (VHFHSZ) 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. We confirm hillside, tree, and fire-zone status at the first site visit so the scope and timeline are realistic.
What about setbacks, utilities, and Title 24 for a Woodland Hills ADU?
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: LADWP (LA Department of Water and Power) coordinates separate or shared service for new ADUs, and many older 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 LADBS 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.
What's a realistic timeline and budget for a Woodland Hills ADU — and how does rental income or family use factor in?
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.

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