Trusted New Detached ADU for North Hollywood Homeowners
Our New Detached ADU in North Hollywood typically costs $350,000-$650,000 all-in, from the first survey to final inspection, depending on size, foundation type, and whether you choose custom stick-built or prefab construction. Ellery ADU Studio has designed, permitted, and built over 900 ADUs since 2015, every one at a written price agreed to before any work started. Call (424) 407-8266 to schedule your free estimate and receive a written quote under Haven Standard Clause 1.
North Hollywood homeowners who bought between 2015 and 2025 are sitting on some of the highest land values in the San Fernando Valley. A new detached ADU converts that equity into rental income, multigenerational housing, or a dedicated workspace without touching your main residence. The catch is that Los Angeles Department of Building and Safety (LADBS) permitting for detached structures in North Hollywood involves fire separation requirements, utility trenching across established landscaping, and setback calculations that differ block by block depending on whether your lot falls under R1-1 or R1-2 zoning. We’ve navigated these specifics for properties from the NoHo Arts District to the Valley Village border, and we package the architecture, structural engineering, and construction under one contract so no one can point at anyone else when a detail doesn’t match the drawings.
What Our New Detached ADU Service Includes
Custom Built ADU
A custom built ADU is stick-framed on your property from foundation to finish, designed to your specifications and the exact constraints of your lot. You need this when your North Hollywood lot has unusual geometry, significant grade change, or you want materials and layouts that prefab systems don’t offer. At Ellery ADU Studio, we produce the full permit set in-house, coordinate the structural engineer, and build from our own drawings under a single contract at a single written price. Our custom ADUs in North Hollywood typically range from 400 to 1,200 square feet, and we size the foundation system to the soil conditions we find during the initial geotechnical review, not guesswork.
Prefab ADU Installation
Prefab ADU installation means a factory-built unit delivered to your North Hollywood property and craned onto a prepared foundation, with utility connections completed on site. This route makes sense when speed matters and your lot is relatively flat with clear access for delivery. We specify and coordinate prefab systems from Abodu, Cover, and other manufacturers within the same single contract, handling the LADBS permit set, foundation prep, and final tie-ins ourselves. The factory build happens concurrent with site work, which typically compresses the overall timeline compared to stick-built construction.
Modular ADU
A modular ADU is built in factory sections, transported to site, and assembled on your foundation, with finish work completed in place. Choose this for larger footprints or multi-bedroom layouts that exceed single-module prefab dimensions. We work with modular brands including Dvele and Mighty Buildings, and we manage the critical interface between factory tolerances and field conditions, particularly the foundation flatness and utility rough-in accuracy that determine whether modules mate cleanly. Our permit set accounts for modular connection details before the factory releases the build order.
Studio ADU
Our New Detached ADU in Studio City follows the same pattern: a studio is a single-room detached dwelling, typically 350-500 square feet, with kitchenette and full bath. This is the most common starting point for North Hollywood homeowners testing ADU investment for the first time, or for properties where the remaining buildable area after setbacks is limited. We design studio ADUs to maximize usable interior volume within the LADBS height limits, often specifying vaulted ceilings or strategic window placement to compensate for the compact footprint. Every studio ADU we build includes a written price before work starts and a documented photo record on every site visit.
1-Bed & 2-Bed ADU
A 1-bedroom or 2-bedroom ADU adds dedicated sleeping quarters with privacy from the living area, making it viable for long-term tenants or adult family members. You need this configuration when rental income is the primary goal, as bedroom count directly affects comparable rents in the North Hollywood market. Our design-build team optimizes the floor plan for the minimum hallway and circulation space allowed by code, which typically yields more rentable square footage per construction dollar. We also specify sound-attenuating construction between units when the ADU will sit close to the main house, a detail many North Hollywood neighbors appreciate.
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.
Brands We Service for New Detached ADU
We specify and coordinate prefab and modular systems from Abodu, Cover, Dvele, Mighty Buildings, Boxabl, Plant Prefab, Tuff Shed, and James Hardie, integrating each within our single-contract design-build model. With Tuff Shed structures, we’ve adapted their utility building systems to residential ADU code compliance, particularly the insulation and mechanical requirements that their standard configurations don’t include. For James Hardie siding systems, we specify the fiber-cement cladding on both custom and prefab-adapted builds, leveraging its fire resistance rating for North Hollywood properties in Very High Fire Hazard Severity Zones where LADBS enforces stricter exterior material rules.
Whether your project involves Abodu, Cover, or any other manufacturer, we handle the specification, permit coordination, and site integration ourselves. The factory warranty stays intact, and our 365-Day Done Right Promise covers the field work. If you already have a quote from another firm for a prefab or modular unit, we offer a Free Second Opinion to review whether the scope, site costs, and permit timeline are accurately represented.
Signs You Need New Detached ADU Right Now
- Your mortgage payment has outpaced your income growth. North Hollywood home prices rose dramatically between 2015 and 2022, and many buyers are now carrying debt loads that strain monthly cash flow. A detached ADU generates rental income from land you’re already paying for, without the vacancy risk or management complexity of a separate investment property.
- An aging parent needs proximity, not dependence. Multigenerational living arrangements work better with physical separation and privacy. A detached ADU keeps family close while preserving boundaries, and the rental income potential remains when the living situation changes.
- You work from home and lack a dedicated space. The NoHo Arts District and surrounding neighborhoods have seen a surge in remote professionals who need acoustic separation from household activity. A detached studio ADU functions as a home office that qualifies for business expense deductions and adds permanent value to the property.
- Your lot has unused rear yard area that meets LADBS setback requirements. Many North Hollywood lots built in the 1940s-1960s have deep rear yards that were never fully utilized. If you have 15+ feet of clear space behind your main residence, you likely have buildable area that is appreciating at land value while producing zero return.
- You’re holding a written estimate that seems incomplete or vague. Estimates that omit geotechnical work, utility trenching, or permit expediting fees often balloon once construction starts. Under Haven Standard Clause 5 (No Surprises), our scope is locked at signing with no door-side upsells. If another firm’s quote doesn’t specify these line items, get a Free Second Opinion before you sign.
Our New Detached ADU Process - Step by Step
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Site analysis and zoning verification. We survey your North Hollywood lot, verify your zone with LADBS, and confirm setback, height, and floor area ratio limits. You receive a written summary of buildable envelope and any required variances before design begins.
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Schematic design and written pricing. We produce preliminary drawings showing footprint, massing, and key interior spaces. Along with these drawings, you receive a written price broken into line items: design and permitting, site prep, foundation, structure, MEP (mechanical, electrical, plumbing), and finishes. This is Haven Standard Clause 1: the price is fixed before any work starts.
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Permit set production and submission. Our in-house team completes architectural plans, structural calculations, Title 24 energy compliance, and any required fire department review. We submit to LADBS and manage the correction cycle ourselves. You receive a documented photo record of any site visits required for field verification.
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Site preparation and foundation. We handle demolition of existing structures if needed, utility locates, grading, and foundation installation. For sloped North Hollywood lots, this may include retaining walls or stepped foundations. The permit set governs every detail; the builder cannot deviate without written change order.
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Structure installation and final inspection. Whether stick-built or prefab, we manage construction through final LADBS inspection and certificate of occupancy. Our 365-Day Done Right Promise begins at closeout: if the finished ADU is not built to the permitted drawings, we make it right, in writing, before the project starts.
How Much Does New Detached ADU Cost in North Hollywood?
See our New Detached ADU cost guide: a typical project in North Hollywood runs $350,000-$650,000 all-in, from initial survey through final inspection. Studio ADUs at the smaller end, built with efficient prefab systems like Abodu or Cover, tend to land in the $350,000-$450,000 range. Custom 1-bedroom and 2-bedroom units with upgraded finishes, larger footprints, or challenging site conditions such as hillside foundations or extensive utility trenching typically reach $500,000-$650,000. These ranges include design, permitting, construction, and our standard finish package; they do not include optional upgrades like solar arrays or high-end appliance packages, which we quote as separate line items under Haven Standard Clause 5.
Several factors move the price within these ranges. Foundation type is significant: a standard slab-on-grade in flat Valley Village-adjacent terrain costs less than the raised pier foundations required on sloped lots near the Hollywood Hills edge, similar to what we see with a New Detached ADU - Van Nuys project. Utility distance matters too; trenching water, sewer, and electrical from a main house at the front of a deep lot to an ADU at the rear can add $15,000-$35,000 depending on length and surface restoration. LADBS permit fees scale with valuation, and properties in Very High Fire Hazard Severity Zones require additional fire-resistant materials that affect both material and labor costs.
To avoid overpaying, compare written quotes line by line, not headline to headline. A lower initial number that omits geotechnical work, utility connection, or permit expediting will grow. Our written price includes every known cost before you sign. Call (424) 407-8266 for your free estimate and a written quote you can compare against any other offer.
New Detached ADU Near North Hollywood - Our Service Area
We design and build new detached ADUs throughout the San Fernando Valley and adjacent LA Basin neighborhoods. Our primary service area includes New Detached ADU in Studio City, New Detached ADU in Burbank, Van Nuys, Sherman Oaks, West Hollywood, Beverly Hills, Glendale, West Los Angeles, Northridge, Tarzana, and the broader Los Angeles area. Most North Hollywood properties receive initial site analysis within one week of contact, with schematic design and written pricing following within two to three weeks depending on current LADBS queue depth.
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.
Frequently Asked Questions - New Detached ADU in North Hollywood
A new detached ADU is a separate, self-contained dwelling built from the ground up on your property, not connected to your main house. It has its own foundation, walls, roof, kitchen, bathroom, and utility connections, and it functions as independent housing. In North Hollywood, detached ADUs are governed by California state law and LADBS local amendments, which specify maximum size, setback, height, and parking requirements that vary by zone.
A typical new detached ADU in North Hollywood takes 12-18 months from signed contract to certificate of occupancy, with 4-6 months for design and permitting and 8-12 months for construction. Prefab and modular systems can compress the construction phase by 2-4 months since factory build happens concurrent with site prep. Call (424) 407-8266 for a timeline estimate specific to your lot and chosen construction method.
New detached ADUs in North Hollywood typically cost $350,000-$650,000 all-in, with studios at the lower end and custom 2-bedroom units on challenging sites at the upper end. The written price you receive before any work starts includes design, permitting, construction, and standard finishes per Haven Standard Clause 1. Call (424) 407-8266 for a free estimate with exact line-item pricing for your property.
Yes, we specify and coordinate both Abodu and Cover systems within our single-contract design-build model. We handle the LADBS permit set, foundation preparation, utility connections, and final finish work, while the factory warranty covers the module itself. This integration eliminates the gap between factory delivery and field completion that derails many prefab projects.
We do not offer emergency construction dispatch; new detached ADU projects are planned construction, not emergency repairs. However, a live person answers calls 24/7 to schedule your free estimate, answer questions about an existing project, or coordinate a Free Second Opinion on a written estimate you already have in hand.
Every new detached ADU is backed by our 365-Day Done Right Promise: if the finished ADU is not built to the permitted drawings, we make it right. This promise is documented in writing before construction starts, not offered verbally after completion. Manufacturer warranties on prefab modules, appliances, and fixtures operate in addition to our workmanship guarantee.
Gather your property’s assessor parcel number, any existing survey or plot plan, and your rough budget range. If you have a written estimate from another firm, bring it for our Free Second Opinion. We’ll verify your zoning, measure buildable envelope, and return with schematic options and written pricing. Call (424) 407-8266 to schedule; estimates are free and carry no obligation.
Schedule Your New Detached ADU Service in North Hollywood Today
Call (424) 407-8266 to schedule your free estimate. You’ll receive a written price before any work starts, a documented photo record on every site visit, and the 365-Day Done Right Promise backed in writing. A live person answers calls 24/7. Whether you’re comparing options or ready to move forward, we’ll give you the specific numbers and timeline for your North Hollywood property.
Written by Nadia Ellery, Owner at Ellery ADU Studio, serving North Hollywood since 2015.