Why Van Nuys Homeowners Choose Dvele ADU
Ellery ADU Studio Van Nuys provides independent Van Nuys Dvele service, installation, and repair for homeowners who bought a Dvele LUMEN, CORE, or OFF-GRID unit and need a local team that understands factory panelized construction. We are not affiliated with or authorized by Dvele; we are an independent design-build studio that specifies, installs, and services Dvele products under our own license and our Haven Standard contract. Call (424) 523-8492 for a written estimate before any work begins.
Van Nuys is one of the most Dvele-appropriate markets in Los Angeles. The flat, alley-served grid of 1950s ranch lots here means a Dvele prefab unit can crane into a backyard without the hillside access issues that kill projects in Studio City or the Hollywood Hills. The detached two-car garages on these 6,000-7,500 square foot lots convert cleanly, and the rear alley gives that converted unit a separate address off the main house - a privacy feature that translates directly to higher achievable rent. Properties within a half-mile of the Metro G Line’s Van Nuys or Sepulveda stations also qualify for LA’s Transit Oriented Communities density tiers, which can unlock unit allowances beyond standard ADU rules. Most Van Nuys homeowners we meet do not know this.
But Van Nuys punishes prefab systems that are not dialed in for its climate and its aging infrastructure. CEC Climate Zone 9 runs 10-15°F hotter than coastal LA, with summer peaks past 100°F. A Dvele unit’s factory-spec mini-split and HRV, sized for milder zones, will short-cycle and underperform here without proper load calculation and panel capacity. And those original 100-amp electrical panels and galvanized plumbing lines in nearly every Van Nuys garage? They are not grandfathered. LADBS will flag them. We build that predictable upgrade cost into our written quotes from day one.
Why Trust Ellery ADU Studio Van Nuys for Your Dvele ADU?
We have logged hundreds of hours on Dvele’s panelized wall and floor cassettes. Our crews build and repair to their structural grid rather than guessing at it. We know the factory shipment choreography, the cassette sequencing, and the tolerance stack that determines whether your interior V-groove finish stays flat or telegraphs every slab irregularity six months after move-in.
Nadia Ellery, our owner and principal designer, grew up in Santa Monica and studied architectural drafting and construction technology at Santa Monica College before spending years on residential projects across the San Fernando Valley. She and her crew have worked extensively in Van Nuys proper, including a run of detached ADU builds near the Van Nuys Civic Center corridor. That ground-level familiarity means she reads a site before anyone picks up a pencil. She has focused exclusively on ADU design-build work for several years, and she is known for permit packages that move through LADBS without the revision cycles that add months. She keeps every soils report and permit approval her office has filed, organized by address. The document either says it or it doesn’t - let’s look at the document.
Our independent status matters. We source Dvele factory cassettes, connectors, and specified mechanical components through authorized distributors. For HERS-required envelope and Title 24 items, we use third-party assemblies when they keep your permit moving. We do not pretend to be Dvele’s service arm, and we do not ask you to navigate warranty questions alone. We document what we find, what we replace, and why, in writing, before any work starts. Haven Standard, Clause 1: written price before any work begins. Clause 5: no surprises, scope locked at signing.
Our license number appears on every page. Our crews are background-checked and uniformed. And a live person answers calls 24/7 - no voicemail queue, no callback that does not materialize.
Common Dvele ADU Problems We Fix in Van Nuys

- Cracked cement-board sheathing and wet insulation from transit or crane damage. Dvele wall cassettes ship factory-sealed, but tight Van Nuys side yards force awkward crane angles. We see bearing edges crushed from rigging straps and cement-board corners cracked where cassettes brushed block walls. The damage does not show until the first rain test, by which point insulation is wet and the HERS rater is scheduled. We open, dry, re-sheath, and re-seal to factory spec before that test happens.
- Slab out-of-level telegraphing through V-groove interior finish. Dvele’s male-female cassette seams are unforgiving. A 1/4-inch deviation in your existing garage slab or new foundation will show months later as shadow lines in the V-groove wall panels. We laser-level every slab before cassette drop, grind high spots or specify self-leveling underlayment, and document the tolerance in our permit set so LADBS rough frame passes clean.
- 200-amp panel upgrade clash with older 100-amp Van Nuys garage feeds. Dvele’s high-efficiency mini-split and HRV spec draws more than vintage 100-amp panels can deliver. LADBS will not sign off without the upgrade. We catch this in pre-construction, price the panel swap and feeder run in our written quote, and coordinate with LADWP for meter scheduling so it does not hold up your framing inspection.
- Factory roof membrane debonding at panel joints. Dvele applies membrane at the factory, but LADBS requires a secondary WRB tie-in at panelized roof connections in Los Angeles. Where the factory membrane does not lap correctly or the primer fails in Van Nuys heat, we get hidden leak paths above the cassette connection line. We strip, prime, and re-sheet to LA’s amended Title 24 details, with photo documentation at each layer.
- Wall-to-foundation mismatch at rough frame. Dvele’s panelized wall cassettes are cut to a tight tolerance, but existing Van Nuys garage foundations settle, heave, or were never square to begin with. We have caught shim plans that would have failed LADBS rough frame, recut bearing plates to the factory grid, and still hit move-in windows. This is the difference between a crew that knows the Dvele system and one that treats it like stick-built with holes pre-cut.
Before
AfterDvele Parts & Our Repair-vs-Replace Approach
We source Dvele factory cassettes, connectors, and specified mechanical components through authorized distributors. For HERS-required envelope and Title 24 compliance items, we use third-party assemblies when they keep your ADU permit moving without sacrificing performance. Our Van Nuys warehouse stocks common Dvele cassette connectors, replacement sheathing, and Title 24-rated WRB tape for same-week turnaround on most repairs.
If a single Dvele panel or cassette is structurally compromised - crushed bearing edge, delaminated sheathing, water-damaged insulation - we replace it. If it is a seam detail, envelope gap, or membrane lap issue, we correct on site rather than condemning the whole unit. This is the honest call, and we document it with photos before and after so you see what we saw. Haven Standard, Clause 3: documented photo record on every visit. Call (424) 523-8492 for a written quote - estimates are free, and the price is locked before work starts.
Our Dvele Service Process - Step by Step

- 1
Diagnosis with factory-grid assessment. We arrive with Dvele cassette drawings and measure your slab or foundation against the factory grid, not a generic level. We check crane access, panel sequencing, and existing utility capacity. You receive a written scope, a photo record of current conditions, and a fixed price before any work begins.
- 2
Repair or install to cassette spec. Our crews work to Dvele’s structural grid, not field-cut approximations. Cassette connections are torqued to factory spec, envelope layers are sequenced for LADBS and HERS sign-off, and deviations are documented with photos in real time.
- 3
Commissioning test before inspector arrival. We run the mini-split, HRV, and electrical load tests ourselves. Dvele units fail HERS duct-blaster or airflow tests when envelope details are rushed. We verify before the rater arrives, not after a failed test adds two weeks.
- 4
Warranty documentation and 365-Day Done Right Promise. You receive a written warranty, the complete photo record, and our 365-Day Done Right Promise in writing: if the finished ADU is not built to the permitted drawings, we make it right. Haven Standard, Clause 7.
Dvele Products We Service & Install in Van Nuys
We cover the full Dvele residential line: LUMEN Series (one- and two-bedroom configurations), CORE Series (compact single-bedroom and studio units), OFF-GRID Series (solar-integrated, battery-ready systems), and two-story ADU configurations. We stock cassette connectors, replacement sheathing, and Title 24 envelope materials for LUMEN and CORE models locally. Two-story and OFF-GRID units require additional lead time for factory components, which we build into our project schedule from the written quote stage. Every installation includes our Prefab ADU Installation, Title 24 Energy Compliance, and Modular ADU coordination as a single contract at one written price, with ADU Design & Permitting handled in-house.
We Also Service These Brands

Our design-build studio specifies and coordinates prefab and modular systems from Abodu, Cover, Mighty Buildings, Boxabl, Plant Prefab, Tuff Shed, and James Hardie. Multi-brand fluency matters: we can compare Dvele’s cassette system against Abodu’s volumetric modules or Cover’s steel frame for your specific Van Nuys lot, and we coordinate whichever system fits within the same single contract. We are not dependent on any one manufacturer’s pipeline.
FAQs - Dvele ADU Service in Van Nuys
We install Dvele factory panelized wall and floor cassettes as an independent service provider. We are not affiliated with or authorized by Dvele. Our crews are trained on Dvele’s cassette grid, connector sequencing, and crane-set choreography. Site-built ADUs are also within our scope, but this page covers our Dvele prefab and modular work specifically. Call (424) 523-8492 for a written estimate.
Yes, but LADBS will require a 200-amp panel upgrade as a condition of permit issuance. Dvele’s high-efficiency mini-split and HRV spec exceeds what a 100-amp panel can deliver, and CEC Climate Zone 9’s cooling loads make undersizing a code violation. We price the panel swap, feeder run, and LADWP meter coordination into our written quote from day one. Call (424) 523-8492 for an exact scope and price - estimates are free.
Dvele’s male-female cassette seams require slab level within 1/4 inch over any 10-foot run. Beyond that, the V-groove interior finish telegraphs the deviation as visible shadow lines. We laser-level every slab during pre-construction and specify grinding or self-leveling underlayment where needed. This tolerance is tighter than stick-built framing but is documented in our permit set so LADBS rough frame passes without revision. Call (424) 523-8492 to schedule a site assessment.
Dvele units ship with factory-installed insulation and high-efficiency mechanicals that meet or exceed Title 24 baseline, but LADBS still requires HERS verification of envelope sealing and duct leakage in the field. The difference is in the HERS rater’s access: Dvele’s panelized construction means some envelope details are buried after cassette connection, so we sequence our work to allow blower-door and duct-blaster testing before final interior panels close up. Stick-built ADUs allow more incremental inspection access. We coordinate both paths under our single contract. Call (424) 523-8492 for a written quote.
Yes. Van Nuys garages from the 1950s and 1960s often have shallow footings, no rebar, or sulfate-heaved concrete that will not carry a Dvele cassette load. We assess bearing capacity, specify pier-and-grade-beam or thickened-slab retrofits where needed, and include the foundation work in our single written price. Nadia Ellery has filed hundreds of LADBS foundation plans for Van Nuys ADUs, and her permit sets include geotechnical notes from local soils reports organized by address. Call (424) 523-8492 for a site-specific assessment and written estimate.
Dvele installation and Dvele repair in Encino and Van Nuys typically ranges from $8,500 for targeted envelope or cassette seam remediation to $185,000-$240,000 all-in for a complete LUMEN or CORE Series detached ADU with foundation, utility upgrades, and final inspection. The 100-amp panel upgrade alone adds $4,500-$7,500 depending on LADWP feeder length. Every project is quoted with a written price before any work begins, per Haven Standard, Clause 1. No call-for-pricing, no scope creep. Call (424) 523-8492 for an exact quote - estimates are free.
Book Your Dvele Service in Van Nuys, CA

Call (424) 523-8492 to schedule your free estimate. A live person answers 24/7. You will receive a written scope, a fixed price, and a documented photo record - or a Free Second Opinion if you already have a written estimate in hand. Every Dvele project is covered by our 365-Day Done Right Promise, backed in writing before the first cassette arrives.
Written by Nadia Ellery, Owner at Ellery ADU Studio Van Nuys, serving Van Nuys since 2015.