Fast, Reliable Garage Conversion Contractor Across Van Nuys
A garage conversion in Van Nuys typically costs between $85,000 and $145,000 for a full ADU with kitchen and bath, and most projects take four to six months from permit to final inspection. The price difference usually comes down to what’s hiding inside the original 1945 – 1965 structure: electrical service, slab condition, and framing integrity. We’re Seedling ADU Builders, and we work on garage conversions throughout Van Nuys every week, from the alley-accessed lots off Vanowen Street to the ranch-house tracts near Van Nuys Boulevard. Call (707) 383-5338 for a written price before any work starts.

Why Seedling ADU Builders Is Van Nuys’s Preferred Garage Conversion Contractor Company
Van Nuys homeowners keep calling us back because we treat the construction process the way we’d want it treated at our own homes. Before a single tool comes out of the truck, you get a written price covering the entire scope. No surprise line items appear after the crew arrives. Every technician who walks through your door is background-checked and uniformed, so when someone enters your yard to look at the rear garage, you know exactly who they are. And throughout the project, a live person answers our phone at any hour. Not a voicemail tree. Not a next-business-day callback.
We’ve converted garages near the Van Nuys Government Center, in the blocks surrounding Sepulveda Basin, and along the alleyways running behind the 1940s and 1950s tract homes south of Victory Boulevard. What we’ve learned is that no two Van Nuys garages are the same under the surface. Some have solid framing and clean slabs. Others have cloth-wrapped wiring, termite damage at the bottom plate, and a slab poured directly on dirt with no vapor barrier. That’s why our contracts include written allowances for the unknowns. If we open a wall and find something that needs repair, we price it in writing and get your approval before we touch it. The 365-Day Done Right Promise covers every completed job, in writing. If it’s not done right, we make it right.
Garage Apartment Conversion in Van Nuys
Garage Apartment Conversion in Van Nuys means turning a detached or attached garage into a fully self-contained rental unit with its own entrance, kitchen, bath, and address. It’s the most common project we build in this neighborhood because the original tract layout works in your favor. Most Van Nuys garages sit at the rear of the lot, accessed by an alley. That means the converted apartment can have its own front door off the alley, separate from the main house entirely. Tenants come and go without crossing your yard. Your kids keep their play space. The dogs stay in the back garden without a stranger walking through it.
What the Build Includes
We handle the full conversion: structural assessment, electrical service and subpanel, insulation to R-15, mini-split HVAC sized for Van Nuys heat, plumbing for a bathroom and kitchenette, drywall, flooring, windows, and the alley-facing entry. If your garage is detached, we bring the utility connections from the main house or the alley service if the city allows it. If it’s attached, we fire-rate the shared wall and add sound insulation so the apartment feels like its own unit, not a bedroom with a kitchenette.
Rental-Ready Details That Matter
Van Nuys sits within the City of Los Angeles, not an independent city. That gives you access to LA’s liberalized ADU ordinance, and for alley-accessed garages, the city will often assign a distinct postal address to the converted unit. This matters for rentability. A tenant can receive mail, register utilities, and list the apartment with its own street number. The private alley entrance is a genuine differentiator most hillside and coastal LA homes can’t replicate. We coordinate the address assignment as part of the permit package.
Garage Conversion Permit in Van Nuys
Garage Conversion Permit in Van Nuys is the document package that converts your garage from a storage structure into a legal dwelling unit under Los Angeles City code. We prepare the plans, submit them to LA Department of Building and Safety, and manage the plan check and inspection process from start to finish. Every project we build in Van Nuys gets permitted. No exceptions. Unpermitted conversions create problems when you sell, refinance, or file an insurance claim, and LA City has become aggressive about flagging them during property transactions.
LA Standard Plan Program
Because Van Nuys is under LA City jurisdiction, many of our clients qualify for the Standard Plan Program. These are pre-approved ADU blueprints that slash plan check timelines significantly. We review your lot, tell you if the standard plans fit, and handle the submittal. For a typical alley-accessed detached garage conversion, the standard plan path can cut weeks off the front end. We’ve used it successfully on projects near the Van Nuys Airport and in the neighborhood blocks around Van Nuys Middle School.
Panel Upgrades and Inspections
Almost every 1945 – 1965 Van Nuys home still has its original 100-amp panel. A garage conversion with a kitchen and mini-split will trip that service in a month. The permit triggers a service upgrade to 200 amps and a dedicated ADU subpanel. We include the electrical scope in our written price. You’ll know the allowance for that upgrade before we start, not after drywall is up. City inspectors in LA check the subpanel feed, the vapor barrier, the R-15 wall insulation, and the HVAC sizing. We schedule and walk every inspection with the inspector.

Trusted Brands We Service in Van Nuys
We work hands-on with the leading ADU and materials brands serious homeowners research before calling anyone: Abodu, Cover, Dvele, and James Hardie siding and trim. If your Van Nuys lot suits a prefab ADU enclosure instead of a stick-built conversion, we’ll tell you honestly. Prefab can save months on site and reduce the daily disruption inside your home. If your existing garage frame is solid, we may recommend James Hardie panel and trim for the new alley-facing walls because it holds up to the Valley sun and resists the moisture and termite pressure we see in this area. Whichever path you choose, the written price, the Care Promise, and the 365-Day Done Right Promise stay the same. As our Garage Conversion Contractor team says: the product has to match the lot, not the builder’s preference.
Common Garage Conversion Contractor Problems We See in Van Nuys Homes
- 100-amp panels with cloth-wrapped wiring. We recently opened up a 1950s detached two-car garage behind a ranch house near Van Nuys Boulevard and found the original panel feeding wiring that crumbled at the first pull. We upgraded the service to 200 amps and ran a dedicated ADU subpanel from it before touching anything else.
- Slabs with no vapor barrier. Most original garage slabs in Van Nuys were poured directly on compacted dirt. Without a capillary break and vapor barrier, moisture wicks up through the concrete and into your flooring. We correct this before framing interior walls.
- Alley-facing wall damage. Old stucco, termite damage, and failed flashing at the garage door header hide until the sheathing comes off. Our contracts include a written allowance for framing repair so a termite-damaged bottom plate doesn’t balloon into an unapproved change order.
- Undersized HVAC for Valley heat. The Van Nuys Airport weather station records some of the highest temperatures in the LA Basin. Garage interiors routinely pass 120°F in summer. A mini-split sized for the coast will fail here. We size every system for the Valley heat island, not the beach.
Pricing for Garage Conversion Contractor in Van Nuys, CA
A straightforward attached garage conversion to a bedroom or living space in Van Nuys typically runs $60,000 – $90,000. A full detached garage apartment conversion with kitchen and bath generally falls between $85,000 and $145,000. The spread depends on what we find when walls open: panel upgrades, slab correction, framing repair, and utility trenching across the lot. Every estimate we write for Van Nuys includes specific line items for the known scope and written allowances for the unknowns. You’ll never get a change order you didn’t approve. Call (707) 383-5338 to schedule a free estimate. Mention you’re in Van Nuys and we’ll include the alley-access address assessment at no charge.
We Also Serve Cities Near Van Nuys
We regularly build garage conversions in Van Nuys plus the surrounding San Fernando Valley communities: Sherman Oaks, Studio City, North Hollywood, and Encino. If you’re in one of those neighborhoods and considering a garage ADU or home addition, our team can walk your property and give you the same written price before any work begins.
Serving Van Nuys, CA - Our Local Coverage Area
We’re based in the Van Nuys area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Garage Conversion Contractor in Van Nuys
Yes. Because Van Nuys is within the City of Los Angeles, a garage converted to an ADU with an alley-facing entrance can be assigned its own postal address distinct from the main house. This means a tenant can receive mail, register utilities, and list the apartment under its own street number. It makes the unit far more rentable. We handle the address application as part of your permit package. Call (707) 383-5338 to confirm your lot qualifies.
Because the original 1945 – 1965 homes in Van Nuys were almost universally built with 100-amp electrical service. Adding a kitchen, bath, mini-split, and lighting loads to a 100-amp panel will overdraw it, so the city requires a 200-amp service upgrade and a dedicated ADU subpanel as a permit condition. We write that upgrade into your price upfront, not as a surprise later in the job.
We insulate the 2×4 walls with R-15 mineral wool and add a capillary break and vapor barrier at the slab. For HVAC, we size a mini-split system for Van Nuys’s actual summer conditions, where garage interiors routinely pass 120°F. A system sized for coastal temperatures will fail here. We size for the Valley heat island and verify the final inspection with LA City once it’s running.
We inspect first, then write allowances into the contract for the specific failure modes common in this neighborhood: termite-damaged bottom plates, failed stucco at the alley wall, missing vapor barriers. If we open a wall and find something the allowance doesn’t cover, we write a change order with a specific price and get your written approval before we do the work. You’ll never see a surprise line item after the crew has already started.
Yes, for most alley-accessed detached garage conversions in Van Nuys, the LA Standard Plan Program applies. These pre-approved ADU blueprints significantly reduce plan check time. We review your lot, tell you honestly if the standard plans fit, and handle the entire submittal. If they don’t fit, we prepare custom plans and explain why. Either way, the price is written before work starts.
Written by Ben Ortega, Owner at Seedling ADU Builders, serving Van Nuys garage conversion and ADU projects across the San Fernando Valley.