Fast, Reliable New Detached ADU Across North Hollywood
A new detached ADU in North Hollywood typically runs $220,000-$380,000 all-in, from the first site survey through final City of LA inspection, depending on whether you build custom or specify a prefab system like Abodu or Cover. Our New Detached ADU team designs, permits, and constructs under one contract at one written price - no designer-builder blame gap, no surprise line items. Dispatch and scheduling are coordinated from our Los Angeles office, and crews serve North Hollywood locally, including the neighborhoods around North Hollywood Station, the residential blocks off Satsuma Avenue, and the post-war ranch tracts near Valley Village. Call (213) 329-7167 to schedule your free estimate.
Why Ellery ADU Studio West Hollywood 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 know the local conditions that derail projects here. Our 900+ ADU portfolio includes dozens of detached units in the 91601, 91602, and 91606 zip codes, many on the same 1940s-1960s ranch lots you’ll find between Lankershim Boulevard and the B Line corridor.
North Hollywood homeowners receive the same documented process as every Ellery client: a written price before any work starts, per Haven Standard Clause 1; a photo record from every site visit; and the 365-Day Done Right Promise, backed in writing. We’re not guessing at your slab condition or your panel capacity. We’ve already seen what the City of LA plans examiner will flag on these lots.
A live person answers our phone 24/7. No voicemail queue. No callback that doesn’t materialize.
Our New Detached ADU Services in North Hollywood
Custom Built ADU
Custom detached ADUs in North Hollywood start around $280,000 and climb toward $380,000 for a 2-bed unit with full kitchen and laundry. We design to your lot’s specific constraints - the alley access, the existing garage slab (if any), the 60-amp or 100-amp service that needs upgrading. Every custom project begins with a site survey and a written scope, not a ballpark. The permit set is the core product; construction follows from drawings that have already cleared City of LA pre-check.
Prefab ADU Installation
Prefab systems from Abodu and Cover typically land between $220,000 and $310,000 installed in North Hollywood, including site prep, utility tie-ins, and final inspection. We specify and coordinate these brands within our single-contract model - you don’t manage a separate prefab vendor and a separate local contractor. The unit arrives on a truck, craned onto your prepared foundation, and we handle the finish connections and Title 24 compliance for CEC Zone 9. On alley-loaded lots near North Hollywood Station, we often route the independent utility drop from the rear, preserving your front-yard landscape.
Modular ADU
Modular construction suits North Hollywood’s flat valley lots and rear-alley access. Factory-built modules arrive 80-90% complete, which compresses the on-site schedule and reduces weather risk. We coordinate modular systems from Dvele, Mighty Buildings, and Plant Prefab, priced from $240,000-$330,000 depending on module count and finish level. The key variable is your foundation: many post-WWII garage slabs won’t carry a habitable structure and need engineered replacement, which we scope before quoting.
Studio ADU & 1-Bed & 2-Bed ADU
Studio detached ADUs in North Hollywood run $220,000-$280,000; 1-bed units $250,000-$320,000; 2-bed units $300,000-$380,000. The jump from studio to 2-bed isn’t just square footage - it’s the kitchen upgrade, the separate HVAC zoning, and the electrical load calculation that often pushes a 100-amp panel to 200-amp. On a 6,000 sq ft lot in the Valley Village-adjacent blocks, we’ve fit a 1-bed studio ADU behind the main house with its own alley address, no replacement parking pad, and a mini-split sized for 105°F summer afternoons.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
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
We specify and coordinate prefab and modular systems from Abodu, Cover, and James Hardie within our single-contract model - not as an add-on service, but as the primary delivery method for clients who want factory precision with local site management. James Hardie fiber-cement siding is our default exterior specification for custom builds in North Hollywood’s CEC Zone 9 climate; it handles the thermal cycling better than vinyl or stucco re-skin. We don’t stock parts in a warehouse - we order to the permitted drawings, which eliminates the “we’ll see what’s available” conversation that delays projects.
Common New Detached ADU Problems We See in North Hollywood Homes
- Reusing the existing garage slab and substandard footings. North Hollywood’s post-WWII garage pads are uninsulated slab-on-grade, typically 3.5-4 inches thick with no rebar and no footing below frost line. They won’t carry a habitable ADU without engineering review, and most need full replacement with a stem-wall foundation. We scope this in the initial site survey and price it before you sign.
- Budgeting a replacement parking pad out of habit. Inside the AB 2097 radius around North Hollywood Station, the lost garage stall doesn’t have to be replaced. Treating it as a required line item wastes money and lot area. We verify your property’s transit proximity and eliminate the pad from scope when the law allows.
- Under-specing the envelope and HVAC for CEC Zone 9. The San Fernando Valley floor is a heat sink. A conversion without above-minimum wall and roof insulation and a properly sized mini-split will bake in 105°F+ afternoons and fail Title 24. We don’t present these as upsells; they’re code-minimum here, and we include them in the base written price.
- Assuming the existing 60-amp or early 100-amp panel can carry an ADU. Most North Hollywood ranches of this vintage were never designed for a second dwelling unit. We specify the panel upgrade, the new service drop, and the separate meter in the initial scope - not as a change order when the inspector fails it.
Pricing for New Detached ADU in North Hollywood, CA
| ADU Type | Typical Range (All-In) | Key Variables |
|---|---|---|
| Studio ADU (custom) | $220,000 - $280,000 | Foundation condition, utility distance |
| 1-Bed ADU (custom) | $250,000 - $320,000 | Kitchen spec, panel upgrade, HVAC zoning |
| 2-Bed ADU (custom) | $300,000 - $380,000 | Square footage, laundry, second mini-split |
| Prefab ADU (Abodu, Cover) | $220,000 - $310,000 | Model selection, site access, crane rental |
| Modular ADU (Dvele, Mighty Buildings) | $240,000 - $330,000 | Module count, foundation, finish level |
| Foundation replacement (if needed) | $18,000 - $35,000 | Slab removal, stem wall, engineering |
| Electrical panel upgrade | $8,000 - $15,000 | 200-amp service, separate meter, trenching |
| Title 24 envelope + HVAC (CEC Zone 9) | $12,000 - $22,000 | Insulation R-value, mini-split sizing |
These ranges reflect what we’ve written on actual North Hollywood contracts. Under Haven Standard Clause 1, the price you receive before work starts is the price you pay - no change orders for conditions we should have found during site survey. Call (213) 329-7167 for your free estimate.
We Also Serve Cities Near North Hollywood
Our crews work across the San Fernando Valley and adjacent communities, including North Hollywood, Studio City, Van Nuys, Burbank, and Glendale. Each city has its own permitting path - Burbank and Glendale run their own building departments, not City of LA - and we scope accordingly. The AB 2097 parking waiver that applies so broadly in North Hollywood does not extend to Burbank or Glendale, where replacement parking requirements remain in force.
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
No, if your property falls within a half-mile of North Hollywood Station, AB 2097 eliminates the replacement parking requirement entirely. This blanket exemption covers virtually all of North Hollywood’s residential core and does not extend to neighboring Burbank or Glendale. We verify your property’s transit proximity during the site survey and remove the parking pad from scope when the law allows, saving you $8,000-$15,000 in paving and lost lot area. Call (213) 329-7167 to confirm your property’s status - estimates are free.
Yes, and this is one of North Hollywood’s most underutilized advantages. A high proportion of local lots back up to public alleys from the original valley street grid, which allows a detached ADU to take its own alley-facing address, separate utility drop, and independent pedestrian entrance. This satisfies City of LA functional-separation requirements without any awkward easement or shared-driveway arrangement - a site condition contractors in denser Westside or hillside neighborhoods rarely encounter. We coordinate the address assignment and utility routing with LADWP and the post office as part of our permit set. Call (213) 329-7167 to schedule your free estimate.
It means the panel must be upgraded before the ADU can pass City of LA inspection. Most North Hollywood ranches of this vintage carry 60-amp or early 100-amp service that was never sized for a second dwelling unit. We specify a 200-amp panel, new service drop, and separate meter for the ADU in every written scope - not as a change order, but as a known requirement priced before you sign. The electrical line item typically runs $8,000-$15,000 depending on trench length and pole proximity. Call (213) 329-7167 for an exact quote on your property.
Because North Hollywood sits on the floor of the San Fernando Valley, a heat sink where summer temperatures regularly exceed 105°F and garage walls absorb sustained radiant heat that renders a poorly insulated conversion unlivable. Title 24 energy compliance for new ADUs in CEC Zone 9 demands above-minimum wall and roof insulation and a properly sized mini-split. We don’t present these as optional upgrades; they’re code-minimum here, and we include them in the base written price. An under-speced envelope will fail inspection and bake your tenants in July. Call (213) 329-7167 - we’ll show you the exact R-values and equipment specs we include.
Yes. We specify and coordinate prefab systems from Abodu and Cover, and modular systems from Plant Prefab and Mighty Buildings, within our single-contract design-build model. You don’t manage a factory vendor and a separate local contractor - we handle specification, delivery coordination, crane scheduling, site prep, utility tie-ins, and final inspection under one written price. On North Hollywood’s flat valley lots with rear-alley access, these systems often install faster than custom stick-build with less site disruption. Call (213) 329-7167 to compare prefab, modular, and custom options for your lot.
Ready to price your project? Call (213) 329-7167 to schedule your free estimate. We’ll survey your site, verify your AB 2097 parking status, and return a written scope with a locked price - before any work begins, per Haven Standard Clause 1.
Written by Nadia Ellery, Owner at Ellery ADU Studio, serving North Hollywood since 2015.