ADU in Van Nuys, CA
Junior ADU & Interior Conversion in Van Nuys typically runs $85,000-$155,000 all-in, drawings through final inspection, while ADU Site Prep & Utilities adds $15,000-$45,000 depending on whether your 1950s ranch needs a panel upgrade or new sewer lateral. We’re Ellery ADU Studio, and our Los Angeles office coordinates crews who serve Van Nuys properties daily - mostly flat lots with detached two-car garages and original 100-amp panels that can’t handle an additional dwelling unit. Call (747) 294-4817 and we’ll schedule your free estimate with a written price before any work starts, per Haven Standard Clause 1.
Why Van Nuys Homes Are Different
Van Nuys sits on the eastern San Fernando Valley floor under City of Los Angeles jurisdiction, where the housing stock is overwhelmingly 1950s-1960s stucco ranch homes on flat 6,000-8,000 sq ft lots with detached two-car garages set at the rear, often alley-accessed. This makes garage conversion the dominant ADU project type here, but there’s a structural catch: the 1994 Northridge earthquake epicenter was just a few miles away, so we routinely encounter prior foundation retrofits, soft-story repairs, and undisclosed modifications that must be fully evaluated before any ADU can tie into existing structure.
The climate is equally decisive. Van Nuys Airport records summer highs regularly topping 105°F, often 15-20°F above coastal LA, which makes dedicated mini-split systems a functional necessity, not an upgrade. That same heat accelerates shingle and flat-roof degradation on detached garages, so re-roofing is a near-universal line item before certificate of occupancy. Original electrical panels are frequently 100 amps or smaller, and galvanized supply lines from original build-out are common - both typically require upgrading as a condition of ADU permitting.
Here’s the jurisdictional advantage: because Van Nuys falls under LA’s Standard Plan Program, contractors who know the system can pull permits through the online portal in weeks rather than months. That workflow is irrelevant two miles away across a city boundary, but here it compresses timeline significantly when the permit set is prepared correctly from the start.
Our Main Van Nuys Services
Van Nuys homeowners call us most often for these three core services, each with its own dedicated Van Nuys page:
ADU Design & Permitting in Van Nuys
We prepare the full permit set - architectural, structural, MEP - as the core product, not an afterthought. In Van Nuys, this means navigating LA’s Standard Plan Program where applicable, or producing custom drawings that account for earthquake-era structural modifications we find during site measure. Every set is delivered with a written price before any work starts. ADU Design & Permitting in Van Nuys covers our full process from feasibility study to approved permits.
Garage Conversion ADU in Van Nuys
The typical Van Nuys job: detached two-car garage, alley access, original slab that may or may not meet current code, and a roof that has baked through twenty summers. We evaluate structural capacity, tie into existing utilities or upgrade them, and produce a permitted dwelling unit under one contract at one written price. Garage Conversion ADU in Van Nuys details our specific approach to these ranch-lot conversions.
New Detached ADU in Van Nuys
Where setbacks allow and the existing garage is unsalvageable, we design and build new detached units from foundation to finish. Van Nuys flat lots simplify foundation work, but setback variances - the extra distance LA requires from property lines - often govern placement. We coordinate prefab systems including Dvele and Plant Prefab within the same single contract. New Detached ADU in Van Nuys explains feasibility and pricing for ground-up construction.
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.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Junior ADU & Interior Conversion in Van Nuys
Junior ADU & Interior Conversion in Van Nuys solves a specific problem: homeowners who want rental income or family housing without building new square footage. The 1950s-1970s ranch stock here - single-story, often with underutilized basements, attached rooms, or garages with existing structure - converts efficiently when the original layout and utilities are evaluated honestly. Junior ADU & Interior Conversion is our dedicated service hub for these projects. The extreme Van Nuys heat makes HVAC planning critical; a junior unit without dedicated cooling is unrentable for three months yearly.
Room-to-ADU Conversion
Signs you need it
You have an attached bedroom, den, or rear wing with separate exterior access that sits unused, and you want permitted rental income without new construction.
What it costs in Van Nuys
Room-to-ADU conversions in Van Nuys typically run $75,000-$135,000 all-in, including the permit set, fire separation, sound attenuation, and dedicated HVAC required by LA code.
How we do it
We measure existing structure, produce a code-compliant permit set with fire-rated separation from the primary dwelling, upgrade electrical and plumbing as needed, and build to the drawings under our single contract with documented photo record on every visit.
Interior JADU
Signs you need it
You need a compact, owner-occupied accessory unit inside your existing home, sharing utilities with the primary dwelling, to house family or generate limited rental income.
What it costs in Van Nuys
Interior JADUs in Van Nuys typically cost $45,000-$85,000 all-in, including the efficiency kitchen, separate entrance, and bathroom wet-wall work that LA requires for this dwelling type.
How we do it
We identify the optimal interior footprint, produce permit drawings showing code-compliant egress and utility sharing, build with sound and fire separation, and deliver with written warranty under our 365-Day Done Right Promise.
What Junior ADU & Interior Conversion Costs in Van Nuys
| Item | Typical range in Van Nuys |
|---|---|
| Room-to-ADU conversion (all-in) | $75,000 - $135,000 |
| Interior JADU (all-in) | $45,000 - $85,000 |
| Above-garage ADU (all-in) | $95,000 - $165,000 |
Can a Junior ADU share utilities with the main house?
Yes, by LA code a Junior ADU must share utilities with the primary dwelling, though we typically upgrade the electrical panel and water heater to handle combined load, especially on Van Nuys homes with original 100-amp service. Call (747) 294-4817 for an exact quote - estimates are free.
Do Interior JADUs need a separate kitchen and bathroom?
Yes, LA requires an efficiency kitchen with cooking appliances and a food-prep surface, plus either a separate bathroom or approved shared-bathroom arrangement documented in the permit set; we design both configurations regularly in Van Nuys ranch layouts. Call (747) 294-4817 for an exact quote - estimates are free.
ADU Site Prep & Utilities in Van Nuys
ADU Site Prep & Utilities in Van Nuys addresses the hidden infrastructure that must be resolved before any dwelling unit can be permitted or occupied. The 1950s-1970s housing stock here - original 100-amp panels, galvanized supply lines, and garage slabs poured without footings - creates predictable upgrade paths that we price in writing before breaking ground. ADU Site Prep & Utilities covers our full scope. The Van Nuys heat microclimate also drives electrical load calculations upward, as mini-split HVAC is non-negotiable for habitable space.
Electrical Panel Upgrade
Signs you need it
Your existing panel is 100 amps or smaller, has fused disconnects, or shows scorch marks and double-tapped breakers that LA will flag during ADU plan check.
What it costs in Van Nuys
Electrical panel upgrades in Van Nuys typically run $3,500-$7,500 for 200-amp service with new mast, weatherhead, and grounding, including LA Department of Water and Power coordination.
How we do it
We verify existing load calculations, specify the new panel and service lateral, pull permits through LADWP, and install with inspection scheduling managed under our single contract.
Plumbing Lateral
Signs you need it
Your home has original galvanized supply lines, the water pressure drops when multiple fixtures run, or the sewer cleanout shows root intrusion or belly in the line that LA will require replaced for ADU occupancy.
What it costs in Van Nuys
Plumbing lateral replacement in Van Nuys typically costs $4,500-$12,000 for supply and sewer lines from house to city main, including trenching, backfill, and permit inspections.
How we do it
We video-inspect existing lines, specify copper or PEX supply and ABS sewer replacement, coordinate LA Bureau of Sanitation inspections, and restore hardscape with documented photo record.
What ADU Site Prep & Utilities Costs in Van Nuys
| Item | Typical range in Van Nuys |
|---|---|
| Electrical panel upgrade (200A) | $3,500 - $7,500 |
| Plumbing lateral replacement | $4,500 - $12,000 |
| Foundation & grading (garage conversion) | $5,000 - $15,000 |
Does Site Prep include pulling permits?
Yes, every utility upgrade we perform includes permit application, inspection scheduling, and sign-off; we do not start work without approved permits and a written price locked under Haven Standard Clause 1. Call (747) 294-4817 for an exact quote - estimates are free.
Can utilities be shared between the main house and ADU?
Junior ADUs must share utilities by code; detached ADUs require separate meters for electric and often gas, which LADWP coordinates on a timeline we build into the project schedule from day one. Call (747) 294-4817 for an exact quote - estimates are free.
Brands We Service in Van Nuys
We specify and coordinate prefab and modular systems from Dvele, Mighty Buildings, Boxabl, and Plant Prefab within our single-contract design-build model. Our Los Angeles office maintains relationships with these manufacturers for Van Nuys projects, with typical turnaround from specification to site delivery measured in weeks, not months. See our brands for full compatibility details.
Pricing for ADU in Van Nuys, CA
| Service | Typical range in Van Nuys |
|---|---|
| Room-to-ADU conversion (all-in) | $75,000 - $135,000 |
| Interior JADU (all-in) | $45,000 - $85,000 |
| Above-garage ADU (all-in) | $95,000 - $165,000 |
| Electrical panel upgrade (200A) | $3,500 - $7,500 |
| Plumbing lateral replacement | $4,500 - $12,000 |
| Foundation & grading (garage conversion) | $5,000 - $15,000 |
| Gas line extension | $2,500 - $6,000 |
| Landscaping & hardscape restoration | $3,000 - $8,500 |
Price push factors in Van Nuys include earthquake-era structural modifications requiring engineering, the near-universal need for mini-split HVAC sized to 105°F design temperatures, and re-roofing degraded garage structures before certificate of occupancy. Every figure above is paired with our written-price guarantee: your quote is locked at signing, with no door-side upsells, per Haven Standard Clause 5 (No Surprises).
Neighborhoods We Serve in Van Nuys
We work across Van Nuys from the central business district near Van Nuys Boulevard to the residential tracts south of Victory Boulevard and east toward the Sepulveda Basin. Dispatch and scheduling are coordinated from our Los Angeles office; crews are typically on-site within the metro response window for this area.
- Lake Balboa
- Van Nuys Civic Center
- South Van Nuys
- North Hills West (Van Nuys-adjacent)
- Sepulveda Basin
Service Area - Cities Near Van Nuys
Our crews serve the full northeast San Fernando Valley corridor from Van Nuys, including Panorama City, CA to the east with its similar postwar ranch stock, Sun Valley, CA to the southeast where industrial-residential zoning creates unique ADU opportunities, Mission Hills, CA to the northwest with its hillside foundation challenges, and Reseda, CA to the west where flat lots and alley-accessed garages mirror the Van Nuys pattern. Each city has distinct permit jurisdiction and microclimate conditions that we account for in every written quote.
Serving Van Nuys, CA - Our Local Coverage Area
We’re based in the Van Nuys 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 About ADU in Van Nuys
Under LA’s Standard Plan Program, properly prepared permit sets can be approved in 3-6 weeks; custom plans typically require 8-14 weeks through City of Los Angeles Department of Building and Safety, with timeline depending on plan-check rounds and correction response speed.
Most Van Nuys neighborhoods are unincorporated LA County or City of LA proper without HOA governance, but specific tracts - particularly newer condo conversions near the civic center - may have CC&Rs; we review title reports for every project and flag restrictions before design begins.
Yes, we specialize in evaluating Northridge-era retrofits, soft-story repairs, and undisclosed structural modifications, documenting their condition in the permit set and adjusting foundation and tie-in details accordingly; this evaluation is included in our feasibility study.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Van Nuys Customers Say
"Every allowance was itemised at the start, so the finish selections did not turn into a surprise at the end."
- Benedict H."The rental income has covered the payment since the second month. They were realistic about the numbers rather than optimistic."
- Odette N."They walked us through setbacks and utility capacity before we paid anything, and told us one of our two options was not going to get approved."
- Mireille T.