Fast, Reliable New Detached ADU Across North Hollywood
A new detached ADU in North Hollywood typically runs $320,000-$580,000 all-in, from permit set through final inspection, with the exact figure fixed in writing before any work begins. Because North Hollywood sits inside City of Los Angeles limits, homeowners here access LA’s nation-leading ADU permitting framework, including the pre-approved Standard Plan program that can compress plan-check timelines compared to independent municipalities like Burbank or Glendale. Our New Detached ADU team coordinates design, permitting, and construction from our Los Angeles office, with crews serving North Hollywood locally. Call (424) 551-7706 to schedule your free estimate.
Why Ellery ADU Studio Los Angeles Is North Hollywood’s Preferred New Detached ADU Company
We’ve designed, permitted, and built ADUs across North Hollywood since 2015, the year California’s ADU laws shifted, and we’ve learned the Valley’s specific failure modes that out-of-area firms miss. Our 900+ ADU portfolio includes dozens of detached units in the 91601, 91605, and 91606 zip codes, from single-story studios near the Metro B Line station to two-bedroom backyard cottages off Magnolia Boulevard.
North Hollywood homeowners receive the same documentation we provide on every project: a written price before work starts, per Haven Standard Clause 1; a documented photo record on every site visit; and a 365-Day Done Right Promise backed in writing. Our license number appears on every page, and our crews are background-checked and uniformed. A live person answers calls 24/7. If you already have a written estimate in hand, we offer a Free Second Opinion.
Our New Detached ADU Services in North Hollywood
Custom Built ADU
Custom Built ADUs in North Hollywood typically run $380,000-$580,000 all-in, depending on square footage and finish level. These are site-built from foundation to roof, which matters on Valley lots where alley access, existing utility paths, and the original 1940s-1970s house footprint don’t accommodate a prefab module dropped from a crane. We specify custom millwork, architectural glass, and specialty finishes, then fix the price in writing before ordering long-lead items. On a recent project near Saticoy Street and Troost Avenue, the rift-sawn white oak cabinetry and 12-foot architectural glass slider set the schedule, not our framing crew.
Prefab ADU Installation
Prefab ADU Installation in North Hollywood runs $320,000-$450,000 for turnkey delivery, though not every lot qualifies. We specify and coordinate systems from Abodu, Cover, and Dvele within the same single contract that covers design and permitting. The catch on North Hollywood’s post-WWII lots is crane access and alley width; a prefab module needs clearance that some rear alleys off Burbank Boulevard or Lankershim don’t provide. We verify this in the site-planning phase, not after you’ve paid a deposit.
Modular ADU
Modular ADUs in North Hollywood fall in the $340,000-$480,000 range and differ from prefab in their code compliance: modular units are built to California’s factory-built housing standards and arrive with state insignia, which can streamline LA Department of Building and Safety inspection sequences. We coordinate modular delivery with James Hardie exterior cladding and site-built foundations to meet Title 24 energy requirements calibrated for North Hollywood’s heat-sink climate, not coastal specs.
Studio ADU & 1-Bed & 2-Bed ADU
Studio ADUs in North Hollywood start around $320,000 all-in; 1-bedroom units typically run $350,000-$450,000; 2-bedroom configurations range $420,000-$580,000. The Metro B Line station makes 1-bed and 2-bed ADUs here particularly attractive as rental assets, commanding premiums that Studio City or Sherman Oaks can’t match without subway access. We size mechanical systems to North Hollywood’s summer load, not westside assumptions.
What happens when you call
- 1
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 and modular systems from Abodu, Cover, Dvele, Mighty Buildings, Boxabl, Plant Prefab, Tuff Shed, and James Hardie, all within the same single contract. For North Hollywood’s custom tier, we source rift-sawn and quarter-sawn hardwoods, European hardware, and architectural glazing through suppliers with established Los Angeles distribution, not drop-shipped from out of state. This keeps lead times predictable and warranties enforceable locally.
Common New Detached ADU Problems We See in North Hollywood Homes
- Alley status not verified with LA Bureau of Engineering. North Hollywood’s rear alleys were originally platted in the 1940s-1950s, but some have been vacated without clear record. A detached ADU sited assuming reduced rear-yard setback from a non-vacated alley can face a costly redesign if the paperwork says otherwise. We pull alley history before finalizing the site plan.
- Coastal-grade Title 24 specs on a Valley site. North Hollywood’s summer highs regularly hit 95-105°F, 10-15°F above coastal LA. Specifying westside insulation values and cooling loads means the ADU fails habitability standards or drives utility bills the tenant won’t pay. We detail higher-R envelope assemblies and right-sized mechanical cooling for the Valley heat sink.
- Undersized electrical and original plumbing left in service. The neighborhood’s post-WWII ranch homes commonly carry 100-amp panels and galvanized supply lines or cast-iron drains. These require full replacement to serve a code-compliant detached ADU, a line item some estimates omit until mid-project.
- Fixed-price quotes that don’t account for long-lead custom items. Custom millwork and architectural glass can carry 12-16 week lead times. If the price was “locked” without ordering deposits placed, the homeowner eats the escalation or accepts substitute materials. Under Haven Standard Clause 1, our written price includes long-lead procurement scheduling.
Pricing for New Detached ADU in North Hollywood, CA
| ADU Type | Typical All-In Range | What Drives the High End |
|---|---|---|
| Studio ADU (site-built) | $320,000-$400,000 | Custom finishes, high-R envelope for Valley heat |
| 1-Bedroom Custom Built | $350,000-$480,000 | Millwork grade, glazing size, slab treatment |
| 2-Bedroom Custom Built | $420,000-$580,000 | Full kitchen, stacked laundry, second bath |
| Prefab/Modular (turnkey) | $320,000-$480,000 | Module count, site access, foundation type |
These ranges include permit set, LA Department of Building and Safety fees, construction, and final inspection. What moves a project to the high end: custom rift-sawn cabinetry, oversized architectural glass, spray-foam sub-slab treatment for radiant heat gain, and full electrical/plumbing replacement from a 100-amp legacy panel. The price you receive is fixed in writing before work starts, per Haven Standard Clause 1. Call (424) 551-7706 for your written estimate.
We Also Serve Cities Near North Hollywood
Our crews work across the San Fernando Valley, including North Hollywood and neighboring Studio City, Van Nuys, Burbank, and Sherman Oaks. Each city carries its own municipal framework; Burbank and Glendale operate independent building departments with different plan-check timelines than LA’s. We maintain permit sets calibrated to each jurisdiction.
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
A non-vacated rear alley qualifies a detached ADU for reduced rear-yard setbacks under LA’s ADU ordinance, often the difference between fitting a unit on a standard 5,000-square-foot lot and not. We verify alley status with the LA Bureau of Engineering before finalizing any site plan; skipping this step voids the setback assumption and can force a complete redesign after plan-check fees are paid. Call (424) 551-7706 and we’ll pull the alley history as part of your free estimate.
Yes. A detached ADU requires its own electrical service or a properly sized feeder from the main panel, and 100 amps is almost always insufficient for a code-compliant unit with modern loads. Original galvanized supply lines and cast-iron drains also fail current LA plumbing codes and must be replaced to pass final inspection. We identify these conditions during site assessment and include the full utility upgrade in our written price, not as a mid-project surprise.
The San Fernando Valley’s heat-sink effect means North Hollywood regularly sees summer highs 10-15°F above coastal LA, so Title 24 compliance here demands higher-R insulation values and greater mechanical cooling capacity than westside designers typically specify. Detached structures on slab-on-grade foundations are especially vulnerable to radiant heat gain through the concrete floor; we specify either spray-foam sub-slab treatment or floating floor systems to meet habitability standards. Using coastal specs on a Valley ADU produces an uncomfortable, non-compliant unit.
Long-lead custom items, not labor, set the calendar. Custom millwork, architectural glass, and specialty hardware can carry 12-16 week procurement timelines, and these items cannot be value-engineered mid-stream without blowing the design intent. We fix the price in writing before placing orders, then coordinate fabrication schedules with our construction sequence so the crew isn’t waiting on site for a slider that ships from Germany. The framing typically takes 3-4 weeks; the millwork lead time determines your move-in date.
Yes, significantly. As part of Los Angeles rather than an independent municipality, North Hollywood homeowners access LA’s pre-approved Standard Plan program and the city’s streamlined ADU ordinance, including reduced setbacks for alley-fronting properties. Burbank and Glendale maintain their own building departments with separate plan-check queues and fee schedules. The Metro B Line station also creates rental demand here that those cities can’t match, making ADU economics particularly favorable in North Hollywood’s 91601 zip. Call (424) 551-7706 to discuss how LA’s framework applies to your specific lot.
Written by Nadia Ellery, Owner at Ellery ADU Studio, serving North Hollywood since 2015.