“Lior is very personable and has many decades of construction experience. We appreciated his sincere evaluation of our project.”
Ann AnterasianHouzz · April 2019
ADU construction · Tarzana, CA
Tarzana ADUs on the Valley's
Most Generous Lots
Oversized parcels, equestrian pockets, and a hillside band south of Ventura — Tarzana gives ADUs room to be ambitious. We design and build to that scale. CSLB #972213.
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CSLB LicensedLicense #972213
5.0 on Houzz17 verified reviews
Family-OwnedLicensed & Insured
24-Hour ResponseFree in-home estimate
Tarzana PermitsLADBS · permits handled in-house
Why Hillstar
What Tarzana Projects Get From Hillstar
Big lots reward real design. Tarzana's parcel sizes open options most of the Valley never sees — when the overlays are read correctly.
Big-Parcel Design Range
South of Ventura toward Walnut Acres and the Sale Avenue corridor, lots comfortably host detached units alongside pools and gardens.
Equestrian-Zone Experience
K-district keeping rules bring barn and corral setbacks into siting decisions — a Tarzana specialty we plan for.
Hillside Band Handled
The southern slopes carry Baseline Hillside provisions and, where mapped, fire-zone construction standards. Both engineered at design.
North-of-Ventura Efficiency
Compact R1 infill favors garage conversions — quick, setback-free within the footprint, and budget-friendly.
LADBS Process Owned
LADBS submittal, corrections, and inspections carried by us, with the Standard Plan route used when it truly helps.
Tree-Smart Siting
Mature oaks and sycamores across south Tarzana get arborist review and envelope planning before drawings finalize.
Our process
A Tarzana ADU in Four Moves
Space to design, discipline to deliver.
1
Walk the Parcel
Lot depth, zoning district, equestrian and hillside status, trees, and utilities confirmed on-site.
2
Design to the Lot
Plans that use Tarzana's space intelligently, filed with LADBS by our team.
3
Build
Foundation through finishes with our own crew and every inspection met.
4
Hand Over
Certificate of occupancy, walkthrough, and a written workmanship warranty.
Local conditions
Permits, Lots & What's Specific to Tarzana
Tarzana lots run unusually generous on average for the inner Valley, which opens design options many tighter neighborhoods can't support — but the equine-keeping pockets and the south-of-Ventura hillside band each carry their own constraints. If you have not taken a Tarzana project through plan check before, our walkthrough of what LADBS asks for on a Tarzana remodel covers the sequence.
Permit jurisdiction
Tarzana sits in the City of Los Angeles, so an ADU here is permitted by LADBS. We file Tarzana plans at the LADBS Van Nuys Development Services Center as a matter of our own practice and manage plan check, corrections, and inspection scheduling from there. LADBS offers the City of LA Standard ADU Plan Program and reviews site-specific eligibility for each property; where it fits, it is the right call when speed matters on a code-conforming detached.
Lot & zoning patterns
South of Ventura — toward Walnut Acres, the Sale Avenue corridor, and the equestrian-zoned RA pockets — runs to noticeably larger parcels than the typical inner-Valley lot, which comfortably take a detached ADU plus pool. Equine-keeping K supplemental zoning generally allows ADUs under state law, but barn and corral setbacks still have to be respected. North of Ventura skews to compact R1 in-fill where garage conversion is the cleanest path.
Design overlays you'll see here
The hillside band south of Ventura sits inside the LA Baseline Hillside Ordinance, and parcels classified inside California Fire Hazard Severity Zones must meet California Wildland-Urban Interface Code (CWUIC) compliance. Mature oaks and sycamores are common across south-Tarzana lots; LA's protected-tree ordinance frequently applies and is best handled at design via arborist review and envelope shifts, not at framing.
Design examples
ADU Design Examples
Examples of ADU styles and layouts.
Reviews
Homeowners on Working With Hillstar
Verified Houzz reviews from Hillstar Construction clients.
“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
Tarzana ADU — FAQ
Large-lot options, equestrian districts, the hillside band, trees, honest budgets, and how to pick an ADU builder in Tarzana.
What can a large Tarzana lot actually hold?
On the oversized southern parcels, a full detached ADU with real square footage — often without touching the pool or main garden. State setback minimums are modest at four feet for side and rear, so on these lots the constraint is usually design ambition and budget, not geometry.
How do the equestrian K-zones treat ADUs?
State ADU law still applies — the units are allowed. What changes is siting: keeping districts carry barn and corral siting considerations that the ADU's placement must respect. We map those constraints at feasibility so the design works with the property's equestrian life, not against it.
Is the south-of-Ventura hillside band buildable?
Generally yes, as an engineered project. Hillside-classified parcels take the Baseline Hillside Ordinance's grading and height provisions, and mapped fire-severity parcels add ignition-resistant construction. More design work and review time — planned from day one on our hillside builds.
What's the smart play north of Ventura?
Garage conversion, usually. The compact R1 infill there mirrors the inner Valley: converting the existing structure inside its footprint avoids setback questions and delivers a legal unit at the friendliest cost point. Where yards run deeper, a compact detached unit competes.
How do we choose an ADU builder in Tarzana?
Start with the license: Hillstar Construction Inc is a licensed California general contractor, CSLB #972213, and you can check any California contractor's license number on the CSLB website before you sign. From there the useful questions are local ones. Ask an ADU contractor how many Tarzana lots they have actually built on, whether they have run a project through the equestrian-zoned pockets or the hillside band south of Ventura, who files the plans with LADBS and stands at the inspections, and whether the crew is theirs or hired job by job. Ask for an itemized written scope with the overlays and utility work priced where you can see them. Our comparison of hiring a general contractor versus going owner-builder on a Tarzana ADU lays out what each path puts on you.
What should we budget?
Tarzana spans the widest range in the Valley — from straightforward conversions to estate-scale detached builds with hillside engineering. The honest number follows the site visit as an itemized written quote, overlays and utilities priced visibly, changes approved in writing before execution.
Also serving Tarzana
Nearby ADU neighborhoods
Design Something Worthy of the Lot
Free feasibility visit — parcel walk, overlay check, and a written recommendation.