Fast, Reliable New Detached ADU Across North Hollywood
A new detached ADU in North Hollywood typically runs $210,000-$385,000 all-in, from permit set through final inspection, depending on size, site conditions, and whether you’re building custom or going prefab. Most projects clear permitting in 4-7 months and build in 5-9 months. If your lot sits within the Metro B Line corridor, you may also avoid $20,000-$40,000 in parking-replacement costs that homeowners in Van Nuys or Reseda routinely absorb. Call (971) 497-2402 and we’ll walk your specific lot before quoting anything.
Ellery ADU Studio has designed, permitted, and built detached ADUs across North Hollywood since 2015. We know the difference between a 6,000 sq ft lot near Oxnard Street and a 7,500 sq ft lot with alley access off Burbank Boulevard. That knowledge matters when the city asks for a setback variance or the county flags your septic leach field. We write the price before we start, and we put that in writing under Haven Standard Clause 1.
Why Ellery ADU Studio Is North Hollywood’s Preferred New Detached ADU Company
North Hollywood homeowners don’t hand a six-figure ADU project to a crew that learned the neighborhood on Google Maps. Our New Detached ADU team has walked hundreds of NoHo lots, from the post-WWII ranch grid south of Victory Boulevard to the larger acreage remnants north of Strathern Street. We know which blocks have rear alleys platted into the original 1940s subdivision maps and which ones don’t. That single detail changes whether your ADU gets a private tenant entrance or shares your driveway.
Our reputation here rests on documentation, not charm. Every North Hollywood project receives a permit set, a written scope, a photo record on every visit, and a 365-Day Done Right Promise in writing. That’s what our clients in neighborhoods like Valley Village and West Toluca Lake tell us they value most: the paperwork that holds up when an inspection gets contentious or a subcontractor misses a detail.
Our New Detached ADU Services in North Hollywood
Custom Built ADU
A custom detached ADU in North Hollywood gives you control over the roofline, window placement, and foundation type. On the 1950s ranch lots that dominate this neighborhood, we typically design 400-1,200 sq ft units that step back from the primary residence and respect the existing side-yard rhythm. Custom builds here run $310-$385 per sq ft all-in, which includes architectural drawings, structural engineering, Title 24 energy compliance, and construction under one contract.
Prefab ADU Installation
Prefab shortens on-site time, which matters on North Hollywood lots where a construction crew shares the driveway with two working adults. We specify and coordinate systems from Abodu, Cover, and Dvele within the same written contract we use for custom work. A 400-600 sq ft prefab unit in NoHo typically lands between $190,000 and $290,000, including site prep, utilities, and the permit set. We order nothing until your lot is measured against the manufacturer’s foundation tolerances.
Modular ADU
Modular construction appeals to North Hollywood owners who want a 1-bed or 2-bed unit delivered in sections rather than stick-built on site. On rear-alley lots near the NoHo Arts District, we’ve placed modular units with entries facing the alley, leaving the front yard untouched. Expect $220,000-$330,000 depending on how much site work the lot requires. Every modular project still gets a full LA City or LA County permit set, not the manufacturer’s out-of-state package.
Studio ADU
A studio ADU in North Hollywood runs 350-500 sq ft and typically costs $175,000-$260,000. These are the most common detached units we permit in NoHo, often converted from the detached two-car garages that came standard on 1950s ranch homes. If your garage sits at the rear of a 6,000 sq ft lot with alley access, a studio conversion can preserve your entire backyard. North Hollywood’s transit overlay removes parking-replacement costs on many of these conversions, which is a significant line item in neighboring Valley cities.
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.
Trusted Brands We Service in North Hollywood
We specify and coordinate prefab systems from Abodu, Cover, and Dvele, and we build custom units around materials from James Hardie. For North Hollywood homeowners, that means we can price a factory-built unit and a stick-built unit against the same site conditions, then let you choose without leaving the contract. We don’t sell brand loyalty; we sell the right envelope for your lot’s heat profile and your tenant’s comfort.
Common New Detached ADU Problems We See in North Hollywood Homes
- Septic leach fields under the proposed slab. A meaningful share of North Hollywood’s pre-1950 residential lots still run on septic. Pouring a slab or trenching utilities over an unmarked leach field leads to failed county inspections and a minimum $5,000 in re-engineering. We verify the septic layout before we finalize any foundation plan.
- Inadequate Title 24 cooling specs. North Hollywood regularly runs 10-15°F hotter than coastal LA, with summer days at 105°F or above. A detached ADU that shares the main home’s HVAC or uses entry-level wall insulation fails habitability review. We spec R-21+ walls and a dedicated mini-split for every NoHo ADU.
- Misread transit corridor boundaries. The Metro B Line parking exemption applies within the ½-mile radius of North Hollywood Station. A lot 1,500 feet from the station in the wrong direction loses the exemption and can trigger $30,000 or more in parking-related site costs. We confirm your lot’s status against the city’s current map before we quote a price.
- Flat-lot drainage failures. On North Hollywood’s open rear yards, a slab set without proper grading channels runoff toward the new foundation. We grade for positive drainage on every project, then document the slope in the permit set so your final inspection passes without a correction notice.
Pricing for New Detached ADU in North Hollywood, CA
A new detached ADU in North Hollywood runs $175,000-$385,000, from drawings through final inspection. Studio ADUs start around $175,000. A 500-600 sq ft 1-bed unit typically lands between $210,000 and $290,000. A 2-bed custom build with alley access and premium finishes can reach $385,000. What moves the number most: whether you’re inside the Metro B Line’s ½-mile corridor, whether your lot has septic or city sewer, and how much grading your rear yard requires. We scope all of it before we quote. We name the price in writing, once, before any work begins. That’s Haven Standard Clause 1. For a free written estimate on your North Hollywood lot, call (971) 497-2402.
We Also Serve Cities Near North Hollywood
Our New Detached ADU team works throughout the Valley. From North Hollywood, we regularly build detached units in Studio City, Universal City, Van Nuys, and Burbank. Each city has its own overlay rules, and we know which ones apply where.
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 - New Detached ADU in North Hollywood
If your lot sits within the ½-mile radius of North Hollywood Station, LA City exempts your detached ADU from parking-replacement requirements. That removes a $20,000-$40,000 cost. We verify your lot’s corridor status on the city’s current map before quoting, because boundary errors are common and expensive. Call (971) 497-2402 to have us check your specific parcel.
LA County health code requires your ADU slab to sit at least 30 feet from an active well and clear of the septic leach field and its replacement area. On smaller North Hollywood lots, that can squeeze a 500 sq ft ADU into a corner you didn’t plan for. We pull the county septic records, verify field location, and adjust the footprint before drawings are finalized. Call (971) 497-2402 for a site check.
Yes. Many North Hollywood residential blocks retain the rear alleys platted into the original 1940s-1950s subdivision grid. An alley-facing ADU entrance gives tenants independent access and keeps your front-yard setback untouched. On a 7,500 sq ft lot near Burbank Boulevard and Tujunga Avenue, we built a 500 sq ft 1-bed ADU with an alley-facing entry off the rear property line. The front yard stayed as it was. Call (971) 497-2402 to discuss your alley access.
Flat lots need positive grading that directs stormwater away from the new foundation, plus any swale or drainage features the LA City inspector requires. On North Hollywood lots, we typically add $4,000-$12,000 for grading, drainage, and soil preparation depending on your lot’s soil and how much fill is needed. We scope drainage before we quote, so the number you see is the number you pay. Call (971) 497-2402 for a written estimate.
North Hollywood’s inland Valley geography runs 10-15°F hotter than coastal LA in summer, with regular 105°F+ days. Title 24 energy compliance for an ADU in NoHo effectively requires R-21+ wall insulation and a dedicated mini-split system sized for the cooling load. An equivalent project in Santa Monica can often pass with a shared HVAC tap and lower insulation values. We spec to North Hollywood’s actual heat profile, not a statewide average. Call (971) 497-2402 to talk through your garage conversion.
Contact Ellery ADU Studio in North Hollywood
Nadia Ellery founded this studio in 2015, the year California’s ADU permitting landscape fundamentally shifted. Since then, we’ve designed, permitted, and built 900+ ADUs, every one documented with a written price before work started and a photo record when work was complete. If you own a North Hollywood lot and want a detached ADU priced honestly, call (971) 497-2402. We’ll walk the property, verify your transit corridor status and septic situation, and hand you a written number. No call-for-a-quote games, no change orders after signing.
Written by Nadia Ellery, Owner at Ellery ADU Studio, building detached ADUs in North Hollywood since 2015.