New Detached ADU in Van Nuys - Plans, Permits & Build, One Fixed Price

Fast, Reliable New Detached ADU Across Van Nuys

A new detached ADU in Van Nuys typically runs $285,000-$485,000 all-in, from permit set through final inspection, depending on size, utility trenching distance, and whether your lot falls within a Metro G Line Transit Oriented Communities bonus tier. We’re Ellery ADU Studio, and our New Detached ADU team has designed, permitted, and built over 900 ADUs since 2015 - including multiple new detached units on the flat, alley-accessed 1950s tract lots that define Van Nuys’s housing stock. Dispatch and scheduling run from our Los Angeles office; crews serve Van Nuys locally, and a live person answers calls 24/7 at (213) 329-7167.

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Why Ellery ADU Studio West Hollywood Is Van Nuys’s Preferred New Detached ADU Company

Van Nuys homeowners don’t need another generic contractor. They need a design-build studio that understands the difference between City of Los Angeles ADU rules and the county pockets that still exist in neighboring unincorporated Valley communities - and how that distinction changes what you can build.

Our Van Nuys clients receive the same single-contract structure we use across Los Angeles: drawings, permit set, and construction under one written price, governed by The Haven Standard. Under Clause 1, the price is fixed before any work starts. Under Clause 5, the scope is locked at signing - no door-side upsells, no scope creep. Every visit produces a documented photo record; you receive evidence of what was found and what was done, not a summary of how it felt.

We’ve built on platted alley blocks near Hazeltine Avenue and Sherman Way, on lots backing up to the G Line corridor, and on the wide 6,000-8,500 sq ft parcels that dominate the neighborhood. That local permit history means fewer surprises at LADBS plan check and faster turnaround on corrections.

Our crews are background-checked, uniformed, and state-licensed - license number appears on every page, verified, not just claimed. And if you already have a written estimate in hand, we offer a Free Second Opinion.

Our New Detached ADU Services in Van Nuys

Custom Built ADU

Custom built ADUs in Van Nuys start around $285,000 for a studio footprint and run to $485,000 for a 2-bed with full utility trenching from the main house. Every custom project begins with a TOC tier check and alley dedication verification - because on a 1956 tract lot near Sepulveda or Van Nuys Boulevard, those two findings alone can add 150 square feet or an extra bedroom to your allowable envelope. We engineer the pad and footing for expansive Valley soil, size the electrical feed for 200-amp service, and specify cooling rated for 112°F peaks. The Haven Standard Clause 1 written price covers all of it.

Prefab ADU Installation

Prefab ADU installation in Van Nuys typically ranges $220,000-$380,000, depending on manufacturer lead times and crane access. We specify and coordinate systems from Abodu, Cover, and Dvele within the same single contract - no separate designer or modular broker to manage. On alley-accessed Van Nuys lots, we verify crane placement and module delivery path early; the narrow 1950s plat dimensions and overhead power lines on some blocks near Victory Boulevard can shift the install sequence and foundation type. We handle that scoping before quoting, not after.

Modular ADU

Modular ADU projects in Van Nuys fall in the $240,000-$420,000 range. The distinction from prefab: modular units arrive as fully finished volumetric sections, which means tighter weather sealing and faster close-in, but also stricter transport width limits on Van Nuys’s 40-foot residential streets. We coordinate with LADOT for any required street closure permits and verify that your block’s alley width can accommodate delivery or whether front-street crane placement is the only viable path. That logistics assessment is built into our written scope.

Studio ADU

A studio ADU in Van Nuys - custom or prefab - typically runs $220,000-$340,000. On the smaller footprint, every efficiency decision matters: the mini-split placement, the electrical subpanel location, whether the water heater is tankless or compact electric. In Van Nuys’s 105-112°F summer heat, we specify dedicated cooling with capacity matched to the structure’s thermal load, not a generic square-footage rule. Undersized units fail here. We size them correctly the first time.

1-Bed & 2-Bed ADU

1-bed detached ADUs in Van Nuys typically range $285,000-$395,000; 2-bed units run $340,000-$485,000. The jump in cost isn’t just square footage - it’s the second electrical circuit, the larger water heater, the enhanced drainage plan for the bigger roof footprint, and the potential need for a sewer lateral upsize on older 1950s mains. On TOC-tier lots near the G Line, that 2-bed may be permitted larger than a comparable lot in unincorporated Reseda. We confirm the tier status before design, so your quote reflects actual allowable density.

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Trusted Brands We Service in Van Nuys

We specify and coordinate prefab and modular systems from James Hardie, Abodu, and Dvele within our single-contract design-build model. For Van Nuys’s stucco-dominant housing context, James Hardie fiber-cement siding integrates visually with existing ranch-home exteriors while meeting City of Los Angeles fire-resistance requirements for detached structures. Abodu and Dvele units arrive with pre-engineered structural and MEP packages that we adapt to Van Nuys’s Valley-soil footing depths and 200-amp electrical feeds. Every specification is documented in the permit set before construction starts - no substitutions at build time without written change order.

Common New Detached ADU Problems We See in Van Nuys Homes

• TOC tier status assumed, not verified. A lot near the Van Nuys G Line station may qualify for bonus density; an identical lot three blocks west may not. We check tier status with the City Planning GIS layer before design, because setback and square-footage assumptions shift mid-permit if the tier was wrong.
• Alley dedication treated as guaranteed. Many Van Nuys blocks were platted with rear alleys in the 1950s, but dedication status varies. We verify with LADOT and confirm sewer lateral access with LASD before drawing a rear-entry ADU. Skip this step, and your independent address or access path disappears at plan check.
• Cooling scoped by square footage rule, not thermal load. Van Nuys summer highs of 105-112°F demand properly sized dedicated mini-splits. A single head or undersized unit that might pass code elsewhere becomes a tenant complaint and warranty callback here. We specify for peak load, not average.
• Grading and drainage deferred to construction. On flat Van Nuys lots, water pools rather than runs off. We design the pad elevation, footing depth, and surface drainage plan during permit set development, not after soils review forces a redesign.

Pricing for New Detached ADU in Van Nuys, CA

We Also Serve Cities Near Van Nuys

Our crews build throughout the San Fernando Valley and adjacent communities. We regularly permit and construct New Detached ADU in Van Nuys and in Sherman Oaks, Studio City, North Hollywood, and Tarzana. Each city’s permitting authority and lot pattern changes the scoping sequence; we adjust the permit set accordingly.

FAQs - New Detached ADU in Van Nuys