Garage Conversion ADU in Sherman Oaks - Design, Permits and Build Under One Contract

Fast, Reliable Garage Conversion ADU Across Sherman Oaks

A garage conversion ADU in Sherman Oaks typically runs $85,000-$165,000 all-in, from measured drawings through final inspection, with most detached two-car garage projects falling in the $110,000-$140,000 range. We’re Nadia Ellery’s team at Ellery ADU Studio, and we handle the full design-build cycle - permit set, construction, and sign-off - under one written contract at one written price. Dispatch and scheduling run from our Los Angeles office, and our crews are in Sherman Oaks regularly, from the flat Valley floor ranches north of Ventura Boulevard to the foothill streets climbing toward Mulholland. Call (424) 407-8266 to schedule your free estimate.

Call (424) 407-8266

Why Ellery ADU Studio North Hollywood Is Sherman Oaks’s Preferred Garage Conversion ADU Company

We’ve designed, permitted, and built more than 900 ADUs since 2015, the year California’s ADU laws opened up, and a significant share of those have been garage conversions in Sherman Oaks and the surrounding Valley. Homeowners here find us because they’ve already talked to a contractor who wouldn’t put a price in writing, or a designer who doesn’t build. Our Garage Conversion ADU team eliminates that gap.

Our Sherman Oaks clients receive the same documentation on every visit: a photo record of what we found, what we did, and what it means for the next phase. Under Haven Standard Clause 1, the written price is locked before any work starts - no “call for a quote,” no ballpark that drifts. If you’ve already got a written estimate in hand, we’ll give you a Free Second Opinion on it.

Response time to Sherman Oaks is same-week for initial site visits, and a live person answers calls 24/7 - no voicemail queue, no callback that doesn’t materialize. We know the local conditions that move a quote: the 100-amp panels common to 1950s-1970s Valley ranches, the vapor-barrier-free slabs, the hillside triggers south of Ventura. That knowledge keeps our estimates accurate and our change orders rare.

Our Garage Conversion ADU Services in Sherman Oaks

Detached Garage Conversion

This is the dominant project type in Sherman Oaks, and for good reason. The neighborhood’s 1950s-1970s suburban build-out left the Valley floor with large lots - typically 7,000-10,000 sq ft - and detached two-car garages that convert cleanly to studio or one-bedroom ADUs. A typical detached garage conversion in Sherman Oaks runs $110,000-$155,000 all-in, depending on whether the existing slab needs moisture mitigation and the panel needs upgrading from 100 amps. We specify and coordinate prefab systems from Abodu and Cover when the site conditions suit them, always within the same single contract.

Attached Garage Conversion

Attached garages in Sherman Oaks ranch homes along streets like Kester Avenue or Noble Avenue present a different puzzle: fire separation between the ADU and the primary residence, plus often-shared walls that must meet current sound transmission standards. These projects typically run $95,000-$135,000. The permit set must detail the one-hour fire-rated assembly, and we build that documentation before construction starts - not after the inspector flags it.

Garage JADU

Here’s where Sherman Oaks differs from almost every neighboring city. Because Sherman Oaks sits entirely within the City of Los Angeles - not an independent municipality - homeowners can legally stack a garage-conversion ADU plus a Junior ADU on the same R1 lot. That combination isn’t allowed in most neighboring Valley cities. A Garage JADU, created by partitioning an existing garage or adding a small kitchenette and exterior entrance, typically runs $45,000-$75,000. For homeowners on Dickens Street, Moorpark Street, or the flat blocks near Van Nuys Boulevard, this dual-ADU strategy can unlock rental income from a single property that other Valley cities simply don’t permit.

Garage Partition & Bathroom Add

Not every garage needs to become a full dwelling. Some Sherman Oaks homeowners want a guest suite with bath, a home office with plumbing, or a rental-ready space that stops short of a full kitchen. These partial conversions typically run $65,000-$95,000. The bathroom add triggers the same permit scrutiny as a full ADU - sewer lateral capacity, venting, waterproofing - so we price it as a defined scope, not an open-ended remodel.

Carport Conversion

Carport conversions in Sherman Oaks are less common than garage work but follow a similar path: slab evaluation, enclosure with proper insulation for Valley heat, and full utility tie-ins. These run $75,000-$115,000, with the lower end applying when an existing concrete pad and roof structure can be adapted.

Trusted Brands We Service in Sherman Oaks

We specify and coordinate prefab and modular systems from Abodu, Cover, and Dvele when a Sherman Oaks site suits off-site construction - typically flat lots with clear crane access and no hillside-ordinance triggers. For stick-built conversions, we source James Hardie fiber-cement siding and trim, specified for fire resistance where foothill properties require it. All materials are ordered against the permit set, not a rough estimate, so what arrives matches what was approved. Our crews carry these specifications in the field, and the photo record on every visit documents installation per plan.

Common Garage Conversion ADU Problems We See in Sherman Oaks Homes

• 100-amp panels with cloth or aluminum wiring. Opening a 1950s Sherman Oaks garage often reveals electrical service that cannot legally feed an ADU’s mini-split, bath fan, and EV-ready outlet. The panel upgrade is triggered by the permit, not optional - and we price it as a line item before we start, not a surprise after walls are open.
• Vapor-barrier-free slabs and undersized framing. Valley floor garages were built for storage, not habitation. The slab has no vapor barrier underneath, and the 2×4 framing is often sistered with scrap lumber. Failing to budget for slab moisture mitigation and reframing to current code is the most common reason a Sherman Oaks conversion quote jumps mid-job. We inspect for this during our first site visit and write the allowance into the contract.
• Mini-splits undersized for Valley heat. Sherman Oaks sits deep in the San Fernando Valley heat pocket, where summer highs regularly hit 105-110°F - often 15-20°F hotter than Westside neighborhoods just over the hills. A 9,000 BTU unit or skipped ceiling insulation will fail habitability inspection and be unrentable in July. We size HVAC for actual local conditions, not generic load calculations.
• Hillside Ordinance triggers south of Ventura Boulevard. Properties on the south edge of Sherman Oaks near the Santa Monica Mountain foothills fall under the City of LA’s Hillside Ordinance, adding grading restrictions, stricter setbacks, and fire-resistant construction mandates. A garage conversion on a flat lot north of Ventura might run $110,000; the same footprint three blocks south, climbing into the foothills, can add $25,000-$40,000 in compliance costs. We identify this during zoning review, not during excavation.

Pricing for Garage Conversion ADU in Sherman Oaks, CA

We Also Serve Cities Near Sherman Oaks

Our crews work across the central and east Valley, including Garage Conversion ADU in Sherman Oaks and neighboring Van Nuys, Studio City, Tarzana, and North Hollywood. Zoning rules, hillside triggers, and utility capacities vary by jurisdiction - we verify conditions for each address during our initial zoning review, not from memory.

FAQs - Garage Conversion ADU in Sherman Oaks