ADU Construction in Tarzana

Tarzana allows detached ADUs up to 1,200 sqft. Attached ADUs can be up to 1,200 sqft or 50% of your primary home's living area, whichever is less, and a JADU (junior ADU) can be up to 500 sqft within your home's existing footprint.

Most detached ADUs are limited to 16 feet in height. With Tarzana's generous lots, most properties have room for a full-size unit.

Yes. Because Tarzana is part of the City of Los Angeles, all ADU permits go through LADBS (Los Angeles Department of Building and Safety) — not Ventura County.

We prepare and submit your plans, manage the approval process, and handle all inspections and any corrections for you.

Most LADBS ADU permits take 2 to 6 months.

LA City's Standard Plan Program can speed things up significantly if you use pre-approved designs. We manage the entire process to keep your project moving.

We build detached ADUs (a standalone backyard unit up to 1,200 sqft), attached ADUs (an extension of your existing home), garage conversions (often the most cost-effective route since the foundation and walls are already in place), and Junior ADUs (up to 500 sqft within your home's footprint).

Garage conversions are especially popular in the Tarzana flats, where 1960s two-car garages often sit underused.

Detached ADUs built from scratch must include solar panels.

Fire sprinklers are not required if your main house doesn't have them.

And no additional parking is required if your property is within half a mile of public transit.

We confirm exactly what applies to your specific lot before design begins.

Several state laws took effect on January 1, 2026. SB 543 limits impact fees — ADUs 750 sqft or smaller have zero impact fees, and JADUs have zero impact or school fees.

AB 1154 relaxes owner-occupancy rules, so if your JADU has its own bathroom, you're not required to live on the property.

AB 462 and SB 9 add protections and streamline approvals statewide.

There's also the CalHFA ADU Grant, which offers up to $40,000 per project toward pre-development and closing costs.

Cost depends on the type of ADU, size, site conditions, finishes, and permits and fees.

Garage conversions cost less than ground-up detached builds, and a 400 sqft studio costs less than a 1,200 sqft two-bedroom.

Slope, soil type, and distance from utility connections also matter.

We provide detailed, transparent estimates so you know exactly what you're paying for before construction begins.

Yes. Master in Design offers financing options to help Tarzana homeowners manage upfront ADU construction costs, permit fees, and finish upgrades without delaying the project.

Yes. Master in Design has been headquartered right here in Tarzana at 6011 Reseda Blvd since 1995 — we live and work here, not serving the area from across town.

Owner Avi "Danny" Vaknin brings over 20 years of construction experience; every crew member has at least 10 years of hands-on expertise, and we're one of the only companies in Los Angeles that provides a guarantee on our projects.