Fast, Reliable ADU Design & Permitting Across North Hollywood
ADU design and permitting in North Hollywood typically runs $8,500-$18,000 for the full permit set, drawings through LADWP release, with most garage conversion ADUs reaching final inspection in 8-14 months from contract signing. We’re Nadia Ellery’s team at Ellery ADU Studio - a design-build practice that handles the architecture, the permit application, and the construction under one written contract at one fixed price. Our Los Angeles office coordinates dispatch to North Hollywood daily, and because we’ve scoped more than 900 ADUs since 2015, we know which alley-backed lots qualify for independent addressing, which slabs need replacement over Valley soils, and how AB 2097’s parking exemption applies to your specific block. Call (213) 329-7167 to schedule your free estimate - every project gets a written price before any work starts, per Haven Standard Clause 1.
Why Ellery ADU Studio West Hollywood Is North Hollywood’s Preferred ADU Design & Permitting Company
North homeowners come to us because we’ve already solved the problems they’re about to encounter. Our documented photo record on every visit means you see what we found - the cracked slab, the 60-amp panel, the alley access - not what we felt about it. We’ve designed, permitted, and built ADUs across the NoHo Arts District, the residential blocks near North Hollywood Station, and the post-war ranch tracts between Victory and Burbank Boulevards.
Our crews are background-checked, uniformed, and licensed; the license number appears on every page we publish. Response time to North Hollywood is same-week for initial site assessments, with permit sets typically delivered to LADBS within 45 days of contract signing. We don’t subcontract the drawings to a separate architect and hope the builder can read them - our ADU Design & Permitting team draws what we build, and we build what we draw.
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. No designer-versus-builder blame gap. No change orders because someone “forgot” the Title 24 package.
Our ADU Design & Permitting Services in North Hollywood

Site Assessment
Every North Hollywood ADU starts with a site assessment that documents what you actually have, not what you hope you have. We measure the existing garage slab, test for expansive soil conditions common to Valley floor lots, photograph the electrical service and panel location, and confirm alley access for an independent utility drop. On a recent assessment near Magnolia Boulevard, we found a 4-inch slab with no footing extension over adobe clay - a $4,200 line item for thickened-edge replacement that we scoped before quoting, not after permit submittal. You receive a documented photo record of everything we find, with each image tied to a line item in your written estimate.

ADU Design & Blueprints
Our permit sets include architectural plans, structural calculations, MEP coordination, and LADBS-specific sheet formatting. For North Hollywood’s alley-backed lots, we routinely design for independent addressing - a separate street number for the ADU, fed by its own utility drop from the alley. This satisfies City of LA functional-separation requirements without the shared-driveway easements that derail projects in denser neighborhoods. We also coordinate prefab and modular systems from Abodu, Cover, and Dvele when a homeowner wants factory-built precision with site-specific foundation and utility integration.

Permit Application
We submit directly to LADBS as the design-build entity of record, handling plan check corrections, resubmittals, and scheduling. North Hollywood falls under the Van Nuys / North Valley LADBS district office, and we know their typical correction cycles - usually one to two rounds for garage conversions with clean Title 24 packages. Because we draw and build under the same contract, there’s no finger-pointing when an inspector flags a detail; we revise the drawing and execute the fix.

HOA & Zoning Compliance
Most North Hollywood tracts are unincorporated single-family neighborhoods without active HOAs, but we verify CC&R restrictions on every title report. For properties with existing covenants, we prepare the architectural review package and attend hearings as needed. Zoning compliance in North Hollywood is generally straightforward - R-1 or R-2 lots with 6,000-7,500 square feet typically accommodate a 1,200-square-foot detached ADU or a conversion of the existing garage - but we confirm setback, height, and lot coverage before any design hours are billed.

Title 24 Energy Compliance
North Hollywood sits in CEC Zone 9, where summer temperatures regularly exceed 105°F and garage walls absorb sustained radiant heat. Title 24 compliance here is not a checkbox; it’s a livability issue. Our permit sets specify R-15 wall insulation, R-30 roof insulation, and mini-splits sized for actual cooling load - not the defaults a designer might pull from a coastal project. We run the CF-1R calculations ourselves, and we size equipment for the Valley’s heat-sink conditions. A poorly insulated conversion here is unlivable by July. We don’t let that reach inspection.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Before
AfterTrusted Brands We Service in North Hollywood
Ellery ADU Studio specifies and coordinates prefab and modular systems from Abodu, Cover, Dvele, Mighty Buildings, and other factory-built manufacturers within the same single contract that covers your site work, foundation, and utility integration. For North Hollywood homeowners who want speed and predictability, a Cover or Abodu unit can cut construction duration by 30-40% while our team handles the site-specific Title 24 package, LADBS structural review, and alley utility coordination. We don’t sell you a box and walk away - we integrate the system into your lot’s actual conditions, with the same written price guarantee that applies to stick-built work.
Common ADU Design & Permitting Problems We See in North Hollywood Homes

- Substandard garage slabs over expansive Valley soils. The 1940s-1960s detached garages common in North Hollywood typically sit on 4-inch slab-on-grade pads with no footing extension. We see these fail LADBS structural review regularly. Our site assessment includes a soil report recommendation when needed, and we quote the thickened-edge foundation replacement as a line item before design begins.
- Electrical service too small for ADU load. Most original North Hollywood homes carry 60-amp or early 100-amp service. An ADU with electric cooking, laundry, and HVAC needs 200 amps with a separate alley-facing drop. We confirm LADWP availability and upgrade path during site assessment - not after permit rejection.
- Title 24 packages copied from coastal climate zones. Designers unfamiliar with CEC Zone 9 specify minimum insulation and oversize mini-splits, failing compliance or creating unlivable spaces. Our North Hollywood permit sets are calculated for 105°F-plus radiant load and Valley floor heat retention.
- Parking replacement designed unnecessarily. Because North Hollywood Station anchors the B and G Lines, most of the neighborhood qualifies under AB 2097 for eliminated parking replacement. Designers who don’t verify transit proximity add parking stalls that waste budget and lot coverage. We confirm your block’s status before drawing.
Pricing for ADU Design & Permitting in North Hollywood, CA
A typical garage conversion ADU in North Hollywood runs $85,000-$165,000 all-in - drawings through final inspection - with the design and permitting portion at $8,500-$18,000 depending on structural complexity and Title 24 requirements. New detached ADUs on North Hollywood’s 6,000-7,500 square foot lots typically range $185,000-$340,000 all-in, including foundation, framing, utilities, and finish. Site assessment is free. Every project receives a written, line-item quote before any work begins, per Haven Standard Clause 1. The scope is locked at signing - no door-side upsells, no scope creep. Call (213) 329-7167 for your exact numbers.
We Also Serve Cities Near North Hollywood

Our crews work across the San Fernando Valley and adjacent communities. If you’re comparing options, we also provide ADU Design & Permitting in North Hollywood and surrounding areas including Studio City, Van Nuys, Burbank, and Glendale - though the alley-grid advantages and AB 2097 coverage that define North Hollywood scoping don’t apply identically in those markets.
Serving North Hollywood, CA - Our Local Coverage Area
We’re based in the North Hollywood 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 - ADU Design & Permitting in North Hollywood

No. Because North Hollywood Station is the eastern terminus of Metro’s B Line and G Line, most of the neighborhood falls within AB 2097’s transit proximity threshold, which eliminates parking replacement requirements for ADU conversions. We verify your specific block’s transit access during site assessment before finalizing the site plan. Call (213) 329-7167 to confirm your property’s status - estimates are free.
Most North Hollywood homes built in the 1940s-1960s carry 60-amp or early 100-amp service, which cannot support an ADU’s additional cooking, laundry, and HVAC load. City of LA inspection requires a 200-amp panel with capacity for the ADU’s dedicated circuits. We coordinate the LADWP alley drop and panel upgrade as part of our single-contract scope. Call (213) 329-7167 for a written quote on your specific service upgrade path.
North Hollywood is in CEC Zone 9, where summer temperatures exceed 105°F and garage walls absorb sustained radiant heat. Title 24 compliance requires R-15 wall insulation, R-30 roof insulation, and a properly sized mini-split - specifications we calculate for actual Valley conditions, not coastal defaults. Our CF-1R documentation is included in every permit set. Call (213) 329-7167 to review your project’s energy package.
Yes. North Hollywood’s original valley street grid includes public alleys behind most residential lots, allowing a converted garage ADU to receive an independent address, separate LADWP drop, and standalone utility meter. This satisfies City of LA functional-separation requirements without shared-driveway easements. We handle the addressing application and utility coordination as part of our permit services. Call (213) 329-7167 to confirm your alley access qualifies.
Often yes. The 4-inch slab-on-grade pads common in North Hollywood’s post-war garages typically lack the footings required for habitable space, and many sit over expansive Valley soils that heave and crack. We assess slab condition and soil stability during our free site assessment, and we quote replacement as a line item before design begins if needed. Call (213) 329-7167 to schedule your assessment.
Ready to convert your North Hollywood garage or build new? Call (213) 329-7167 to schedule your free site assessment. You’ll receive a written, line-item price before any work starts - per Haven Standard Clause 1 - plus a documented photo record of everything we find and a 365-Day Done Right Promise backed in writing.
Written by Nadia Ellery, Owner at Ellery ADU Studio, serving North Hollywood since 2015.