Garage Conversion ADU in Van Nuys - Plans, Permits & Build, One Fixed Price

Fast, Reliable Garage Conversion ADU Across Van Nuys

A garage conversion ADU in Van Nuys typically runs $85,000-$165,000 all-in, from measured drawings through final inspection, depending on whether you’re converting an attached garage, detached garage, or carport, and whether the existing electrical service and alley access need upgrading. Most Van Nuys conversions take 6-10 months from signed contract to certificate of occupancy, with the permit phase running longer than construction because of LADOT alley verification and LASD sewer lateral checks. Call (213) 329-7167 to schedule your free estimate - we’ll bring a written price, not a callback promise.

Call (213) 329-7167

We’ve been designing, permitting, and building garage conversion ADUs in Van Nuys since 2015, the year California’s ADU laws shifted. Our crews know the difference between a 1952 tract lot off Vanowen and a 1964 ranch near the Sepulveda Basin - and how that changes your permit path, your cooling load, and your final price. Dispatch and scheduling run from our Los Angeles office, but the crews serving Van Nuys live here, work here, and understand why a 100-amp panel and a rear alley dedication can make or break your project timeline.

Why Ellery ADU Studio West Hollywood Is Van Nuys’s Preferred Garage Conversion ADU Company

We’ve completed more than 900 ADUs across Los Angeles since 2015, and a significant share of those have been garage conversions in the San Fernando Valley. Van Nuys homeowners find us because they have already read the three-star reviews of contractors who bid low, then discovered the alley wasn’t dedicated, the panel couldn’t handle the load, or the mini-split was sized for Santa Monica instead of the Valley heat trap. Our Garage Conversion ADU team doesn’t start construction until the permit set is approved and the scope is locked - Haven Standard, Clause 1: written price before any work starts, Clause 5: no surprises once the contract is signed.

Our reputation in Van Nuys is built on documentation, not claims. Every visit produces a photo record - what we found, what we did, what the slab measured, what the alley looked like. Clients receive the evidence, not a summary of how it felt. Under the 365-Day Done Right Promise, if the finished ADU isn’t built to the permitted drawings, we make it right - in writing, before your project starts.

Response time matters when you’re holding an estimate from another contractor and something feels off. We offer a Free Second Opinion on any written estimate already in hand. A live person answers calls 24/7 - no voicemail queue, no callback that doesn’t materialize. When you’re ready to move forward, we schedule a site visit to your Van Nuys property, measure the garage, check the alley conditions, and return a written line-item quote.

Our Garage Conversion ADU Services in Van Nuys

Detached Garage Conversion

Detached garage conversions are the highest-opportunity ADU type in Van Nuys. The neighborhood’s flat, alley-accessed 1950s-60s tract lots are saturated with detached rear garages that function as pre-positioned ADU shells. Because Van Nuys sits inside the City of Los Angeles’s highly permissive ADU ordinance and parts of it fall within Transit Oriented Communities bonus tiers tied to the Metro G Line’s Van Nuys and Sepulveda stations, a detached rear garage here can sometimes convert to both a Junior ADU and a full ADU where a neighboring unincorporated Valley parcel could not. We verify alley dedication and sewer lateral access with LADOT and LASD before the permit set is filed - block-by-block conditions vary, and unverified access can derail a conversion mid-permit.

Garage JADU

A Junior ADU carved from an existing garage is limited to 500 square feet and must share bathroom or kitchen facilities with the primary residence, but the permitting path is streamlined and the impact fees are lower. In Van Nuys, we often see homeowners pair a garage JADU with a separate detached ADU on the same lot - legal under LA’s TOC tiers if your parcel qualifies. The key constraint is the electrical service: original 100-amp panels on 1947-1968 ranch homes cannot handle both units without an upgrade, which we scope and permit alongside the JADU.

Garage Partition & Bathroom Add

Not every garage converts cleanly. Some Van Nuys homeowners want to retain half the garage for storage or parking and convert the other half to a studio, office, or rental unit with its own bathroom. We frame partition walls, run DWV tie-ins to the rear sewer lateral, and ensure the remaining garage bay maintains code-compliant vehicle access. On a 1950s stucco ranch off Vanowen near the Van Nuys G Line station, our crew converted a detached rear garage into a JADU with its own alley-facing entrance; the original 100-amp service forced a panel upgrade, so we ran a dedicated 240V mini-split circuit and upsized the feeder. We stripped the garage slab, added a bathroom DWV tie-in to the rear lateral, and framed a partition wall to separate the JADU from the attached-garage storage bay. Because the alley entrance had to be verified with LADOT and LASD before permit, we built the alley approach and grading plan into the scope up front rather than as a change order.

Attached Garage Conversion

Attached garage conversions in Van Nuys face different constraints than detached units. The shared wall with the primary residence means fire separation, sound transmission, and HVAC zoning requirements are stricter. We design the conversion as a fully independent unit with its own meter if the client intends to rent it, or as an accessory space with shared systems if the goal is family use. The existing slab depth, foundation type, and roof tie-in all get measured and documented before the permit set is drawn.

Carport Conversion

Carport conversions in Van Nuys are less common than garage conversions but follow a similar path: enclose the structure, insulate, add utilities, and bring the envelope up to current energy code. The absence of an existing slab or foundation often raises the price, since we may need to pour footings and a new slab. We assess soil conditions, drainage patterns, and the proximity to the primary residence before quoting.

Before

After

Trusted Brands We Service in Van Nuys

Ellery ADU Studio specifies and coordinates prefab and modular systems from Abodu, Cover, and Tuff Shed within the same single-contract design-build model. For Van Nuys clients considering a hybrid approach - a site-built garage conversion with factory-built components - we integrate these systems into the permit set and construction schedule. James Hardie siding is our default specification for exterior finishes on conversions where the original garage door opening is infilled with wall and window; it handles the Valley’s thermal cycling better than vinyl and meets LA’s wildfire-urban interface requirements where applicable. We stock common Hardie trim and panel configurations locally to avoid the 6-8 week lead times that can stall a conversion mid-build.

Common Garage Conversion ADU Problems We See in Van Nuys Homes

• Undersized cooling systems. Van Nuys routinely hits 105-112°F in summer, sitting deep in the San Fernando Valley heat trap. A passive or code-minimum mini-split leaves the converted garage unrentable and exposes the owner to tenant complaints. We size dedicated mini-splits for actual load, not minimum code.
• Electrical service too small to support an ADU. Original 100-amp or smaller service on 1947-1968 ranch homes is nearly universal in Van Nuys. The garage conversion stalls unless the panel upgrade is scoped and permitted alongside the ADU. We catch this in the first site visit, not after permit submittal.
• Alley conditions that derail permits mid-process. Unverified alley dedication, LASD access, or sewer lateral conditions on a block-by-block basis can stop a detached garage conversion cold. We verify with LADOT and LASD before the permit set is filed, not after.
• Slab and foundation assumptions that don’t survive inspection. Many Van Nuys garage slabs are 4-inch unreinforced pours from the 1950s, adequate for vehicle storage but potentially inadequate for a habitable unit. We test thickness, reinforcement, and vapor barrier condition before quoting the foundation line item.

Pricing for Garage Conversion ADU in Van Nuys, CA

We Also Serve Cities Near Van Nuys

Our crews work across the San Fernando Valley, including Garage Conversion ADU in Van Nuys and surrounding cities: Sherman Oaks, Studio City, North Hollywood, and Tarzana. Each city has its own permitting path - LA City, LA County, or incorporated municipality - and we adjust the permit set accordingly. The Valley’s 1950s housing stock and alley-platted lots extend into all of these areas, but the specific ADU rules, TOC tier eligibility, and utility access conditions change block by block and city by city.

FAQs - Garage Conversion ADU in Van Nuys