Garage Conversion ADU in North Hollywood - Design, Permits and Build Under One Contract

Fast, Reliable Garage Conversion ADU Across North Hollywood

A garage conversion ADU in North Hollywood typically runs $95,000-$165,000 all-in, from measured drawings through final LADBS inspection, and most projects reach permit submission within 8-12 weeks of contract signing. Because North Hollywood sits within the City of Los Angeles rather than an independent municipality, your project falls under LA’s permissive ADU ordinance, and much of the neighborhood lies within the half-mile transit-priority corridor around the NoHo Metro B Line and G Line terminus, where setback and lot-coverage rules are the most favorable in the Valley.

Call (424) 325-4322

We’ve been converting garages across North Hollywood since 2015 - from the post-war ranches along Satsuma Street in the NoHo Arts District to the bungalow courts near Tujunga Avenue and the alley-facing detached garages off Lankershim Boulevard. Our crews are local, our permit runners know LADBS Van Nuys by name, and our Garage Conversion ADU team coordinates design, structural engineering, and construction under a single contract at a single written price. Dispatch and scheduling run from our Los Angeles office, but the crew that measures your slab and the superintendent who walks your final inspection both work North Hollywood weekly. Call (424) 325-4322 to schedule your free estimate.

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

We’ve designed, permitted, and built over 900 ADUs since 2015, and North Hollywood represents one of our highest-volume corridors - the combination of transit-accessible rental demand and alley-garage housing stock makes it an ideal conversion market. Homeowners here receive the same documentation we provide everywhere: a written price before any work starts (Haven Standard, Clause 1), a documented photo record on every site visit, and a 365-Day Done Right Promise backed in writing.

Our North Hollywood clients tend to find us after they’ve already received one or two estimates that felt vague - a “rough range” that widened by forty percent once permits got involved. We don’t do that. Every line item is named, every contingency is bounded, and the scope is locked at signing under Clause 5 (No Surprises). No door-side upsells. No scope creep.

A live person answers calls 24/7. If you have a written estimate already in hand, we’ll provide a Free Second Opinion, line by line.

Our Garage Conversion ADU Services in North Hollywood

Detached Garage Conversion

Detached garage conversions are the dominant project type in North Hollywood, and for clear reason: the neighborhood’s post-WWII grid was built with rear alleys and separate garage structures on nearly every 6,000-8,000 sq ft lot. These mid-century garages typically require the most upfront scrutiny. The original 1950s slabs were poured without vapor barriers or insulation, and LADBS consistently flags bare concrete as non-compliant for habitable space. We budget for a raised floor system or full slab replacement from day one, because contractors who don’t routinely hit change orders mid-permit that add $8,000-$15,000 to the project. On a post-WWII ranch off Satsuma Street near the NoHo Arts District, our crew converted a detached alley-facing garage where the original 1950s slab had no vapor barrier and was already spalling. We poured a new raised stem-wall foundation with a sealed vapor barrier, upgraded the main house panel, and used stainless fasteners and marine-grade window frames on the alley exposure. The result: LADBS signed off on occupancy without change orders, and the unit now rents to a production assistant who walks to the B Line.

Attached Garage Conversion

Attached garages in North Hollywood’s ranch and bungalow stock share wall assemblies with the main house, which changes the fire-separation and sound-transmission requirements. LADBS requires a one-hour fire-rated assembly between dwelling units, and the existing garage-to-house door must be removed or upgraded to a rated opening. We handle the structural assessment, the firewall detailing, and the HVAC zoning so your main house and ADU operate independently. Because these conversions tap into the existing electrical service, panel capacity is often the limiting factor - most 100-amp panels from the 1950s and 1960s cannot carry the additional load of a kitchen, bathroom, and mini-split system.

Garage JADU (Junior ADU)

A Garage JADU in North Hollywood caps at 500 square feet and must share bathroom or kitchen facilities with the main house, but the permitting path is streamlined and the owner-occupancy requirement is lighter than for a full ADU. For homeowners who need flexible space - a home office for a spouse in the entertainment industry, a short-term rental unit during pilot season - the JADU offers faster LADBS approval and lower construction cost. We typically see these work best on properties where the garage is attached and the main house has underutilized utility capacity.

Carport Conversion

Carport conversions in North Hollywood face a specific challenge: many post-war carports were built with open-sided roof structures on minimal footings, with no slab at all. Converting to habitable space means adding walls, insulation, and a conditioned floor system from scratch. The upside is that you’re not fighting a failing 1950s slab. The downside is that the foundation and envelope work represent a larger share of the budget. We price these separately from garage conversions so you can compare the true cost of each path.

Garage Partition & Bathroom Add

Some North Hollywood homeowners want to retain vehicle storage while adding a studio or bathroom to the rear portion of an oversized garage. This requires careful space planning to meet minimum ceiling heights, natural light requirements, and separate egress. We model these layouts in our permit set so LADBS can review the configuration before construction begins, eliminating the risk of a field revision that delays your certificate of occupancy.

Trusted Brands We Service in North Hollywood

Ellery specifies and coordinates prefab and modular systems within the same single contract that covers your design and permitting, so the brand choice is integrated from the first drawing rather than bolted on mid-project. In North Hollywood, we regularly source Tuff Shed structures for detached garage replacements that exceed the original footprint, specify James Hardie fiber-cement siding for its resistance to the Valley’s thermal cycling and intense UV exposure, and coordinate Abodu units for homeowners who want a complete detached replacement rather than a conversion of the existing structure. Every specification is documented in the permit set, and every material carries a written warranty.

Common Garage Conversion ADU Problems We See in North Hollywood Homes

• Spalling slabs with no vapor barrier. The original 1950s garage slabs throughout NoHo were poured on ungraded fill with no vapor barrier beneath. Moisture wicks upward, concrete deteriorates, and LADBS flags the condition during habitable-space review. We see this on roughly half the detached garages we measure in the neighborhood. The fix is a raised floor system or full slab replacement, and it must be in the original scope, not a surprise.
• Inland heat spec’d with coastal hardware. North Hollywood’s summer highs routinely hit 100°F or above, and the marine layer never reaches this deep into the Valley. Contractors who specify standard galvanized fasteners and untreated window frames - adequate for Santa Monica, insufficient here - create a ten-year failure cycle. We specify stainless or hot-dip galvanized hardware and marine-grade finishes on every alley exposure, because the cost delta upfront is smaller than one remediation.
• Electrical panels that can’t carry the load. Most North Hollywood homes from the 1940s through 1960s were built with 100-amp service. A garage conversion ADU with electric range, water heater, and mini-split HVAC adds 60-80 amps of demand. The panel upgrade is not optional, and it’s not a change order - it’s a line item in our written quote, priced before you sign.
• Undersized HVAC for Title 24 cooling loads. North Hollywood’s location in the San Fernando Valley heat pocket means California Title 24 energy calculations run closer to high-desert standards than coastal LA. A mini-split sized for Santa Monica will underperform and overconsume electricity here. We engineer cooling loads to the actual climate zone, which raises the HVAC line item but prevents the callback.

Pricing for Garage Conversion ADU in North Hollywood, CA

We Also Serve Cities Near North Hollywood

Our crews work the full northeast San Fernando Valley corridor, including Garage Conversion ADU in North Hollywood and surrounding Studio City, Van Nuys, Burbank, and Glendale. Each city carries its own municipal code or, in LA’s case, specific zoning overlays, and our permit sets are adjusted accordingly. The transit-priority corridor advantages that apply to much of North Hollywood do not extend to Burbank’s independent municipal code, for example - a distinction our runners navigate daily.

FAQs - Garage Conversion ADU in North Hollywood