Fast, Reliable New Detached ADU Across Tujunga
A new detached ADU in Tujunga typically runs $280,000-$420,000 all-in, from first survey through final inspection, with prefab and modular units landing at the lower end and custom builds at the higher. The single biggest variable here isn’t square footage. It’s the fire-hardening requirements triggered by Tujunga’s Very High Fire Hazard Severity Zone designation, plus the age of your home’s electrical system. We know both cold. Our New Detached ADU team has designed, permitted, and built units across this canyon community, and we handle the VHFHSZ cross-reference before we ever submit to LADBS. Call (971) 497-2402 to get a written price on your project.
Why Ellery ADU Studio Is Tujunga’s Preferred New Detached ADU Company
Since 2015, we’ve completed 900+ ADUs across the Los Angeles area, and the Tujunga projects stand out for one reason: every one of them required fire-zone materials that a flatland contractor would have missed at plan check. We don’t guess at this. The first thing we do on any Tujunga site is pull the fire hazard severity zone map and verify what LADBS will require of your exterior wall assemblies, vents, and roof. That single step saves our clients weeks of permit back-and-forth.
Our crews serving Tujunga are background-checked and uniformed, and their work is documented. You receive a photo record of every site visit, not a verbal summary. When we open up a wall behind a 1950s kitchen and find undersized framing, you see the photo. You see the written change order. You approve it in writing before we touch anything else. That’s Haven Standard Clause 5, No Surprises, and it’s why homeowners who’ve been burned by vague estimates end up calling us after the fact for a second opinion on a competing bid.
We’re not the cheapest ADU builder in Tujunga, and we don’t try to be. We quote a fixed written price before work starts, under Haven Standard Clause 1, and that price doesn’t move unless you approve a change in writing. If the finished ADU isn’t built to the permitted drawings, our 365-Day Done Right Promise says we make it right. In writing. Before demo begins.
Our New Detached ADU Services in Tujunga
Custom Built ADU
A custom detached ADU in Tujunga means a ground-up build on your rear yard, typically 600-1,200 sq ft under LA’s permissive ADU ordinance. On the large 7,500-15,000 sq ft lots common in the Sunland-Tujunga corridor, you have real siting options: tuck it behind the garage, set it against the canyon-facing rear fence line, or anchor it to the northwest corner to capture San Gabriel Mountain views. We draw the full permit set in-house, specify fire-rated exterior cladding per VHFHSZ standards, and manage construction under the same contract. No designer pointing at the builder when a roof tie-in detail doesn’t match the approved plan. One contract, one written price.
Prefab ADU Installation
Prefab units from Abodu, Cover, and Dvele work well on Tujunga’s accessible lots, but the fire-zone overlay adds a step most installers skip: verifying that the factory wall and roof assemblies meet LADBS ignition-resistant standards before you sign a purchase order. We coordinate that verification as part of our Tujunga site prep and permit work. Some factory units need upgraded ember-resistant venting or a Class A roof assembly specified at order time. We handle that in the same single contract, so the unit arrives configured for Tujunga’s requirements, not for a generic LA zip code. Expect $230,000-$340,000 for a factory-built one-bedroom with foundations, utilities, and fire-hardening included.
Modular ADU
Modular construction splits the difference between fully custom and prefab: more layout flexibility than a box-drop, faster framing than stick-built, and still subject to every VHFHSZ material requirement. On Tujunga’s narrow canyon-side lots, where a crane or a large module truck needs to navigate Apperson Street or the winding blocks off Foothill Boulevard, we do a site logistics check during our first walkthrough. That check determines whether a modular unit is cost-effective for your lot or whether we should recommend a panelized or stick-built approach instead. You get that answer in writing with the estimate, not after the truck can’t make the turn.
Studio ADU
A 400-600 sq ft studio ADU is the most common request we get from Tujunga homeowners who want rental income or a home office without surrendering the whole yard. These compact units still trigger every fire-zone requirement: ember-resistant vents, Class A roofing, and fire-rated exterior wall systems. A studio ADU in Tujunga with a kitchenette and full bath runs roughly $175,000-$260,000 depending on site conditions, foundation work, and how much of your existing electrical service can carry the added load. Most 1940s-1960s ranch homes here have 60-100 amp panels, so we almost always budget a panel upgrade into the written price from day one.
1-Bed & 2-Bed ADU
One- and two-bedroom detached ADUs are the sweet spot for Tujunga’s long-term rental market. A 1-bed typically lands between 500 and 750 sq ft and runs $240,000-$330,000. A 2-bed with a full living space and laundry pushes 750-1,000 sq ft and falls in the $310,000-$420,000 range. Those numbers include architectural drawings, structural engineering, the VHFHSZ material upgrades, site work, utilities, and the permit set, all delivered under one contract with one written price. We write the geotechnical assessment into the scope when your lot sits on the canyon side near the Station Fire burn scar, because skipping that step has cracked fire-rated siding on more than one Tujunga ADU within two winters.
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.
Trusted Brands We Service in Tujunga
We specify and coordinate prefab systems from Abodu, Cover, and Dvele, and we’re fluent in the fire-zone modifications each brand requires for Tujunga’s VHFHSZ overlay. Our relationship with James Hardie matters here too: their fiber cement siding is one of the most common exterior wall assemblies we specify for Class A and ignition-resistant wall compliance in the fire district. When a factory unit arrives with standard vents, we swap them for ember-resistant models before installation. One contract covers it all, and the permit set reflects the final configuration, not the factory default.
Common New Detached ADU Problems We See in Tujunga Homes
- Plan check stops at LADBS for fire-zone materials. A contractor submits standard LA City ADU plans and gets flagged when the VHFHSZ overlay triggers ignition-resistant vent, roofing, and wall assembly requirements that weren’t budgeted. We cross-reference the fire map before submittal, every time.
- The 60-amp subpanel gets discovered at final electrical inspection. 1940s and 1950s bungalows throughout Tujunga still carry original 60-100 amp panels. Adding a detached ADU’s electrical load on top of that trips the final inspection and forces a last-minute panel swap. We check your service size during the first walkthrough and write the upgrade into the contract.
- Canyon-adjacent slabs crack without a geotechnical report. Post-Station-Fire debris flow history means soil stability isn’t a given on the mountain-facing side of Tujunga. We require a geotechnical assessment on canyon-side sites and engineer the slab or pier foundation accordingly. It’s a line item, not a surprise.
- Detached garages from the 1950s aren’t worth retrofitting for a conversion. Some homeowners ask about converting an old detached garage into an ADU. We’re honest when the foundation and framing don’t justify it, and our New Detached ADU team will recommend a new build on the same footprint instead. The written price tells you which path costs less over 30 years.
Pricing for New Detached ADU in Tujunga, CA
Here are the numbers we’re quoting in Tujunga right now. A studio ADU runs $175,000-$260,000. A 1-bedroom runs $240,000-$330,000. A 2-bedroom with laundry runs $310,000-$420,000. Custom builds above 1,000 sq ft can exceed $450,000 on difficult canyon sites. Every quote includes the drawings, the permit set, VHFHSZ fire-hardening materials, site work, utilities, foundation, construction, and final inspection, all under one contract at one written price. We don’t give verbal ranges and then revise upward. You get the written scope before any work starts, under Haven Standard Clause 1. Call (971) 497-2402 for a free written estimate, or bring us a competing bid and we’ll give you a Free Second Opinion.
We Also Serve Cities Near Tujunga
Our crews serve the surrounding foothill and valley communities with the same written-price standard. We build detached ADUs in Burbank, Glendale, North Hollywood, and Universal City, and we’re familiar with how each city’s building department handles ADU plan check. If you’re in one of those areas, call (971) 497-2402 and we’ll tell you what your specific jurisdiction requires.
Serving Tujunga, CA - Our Local Coverage Area
We’re based in the Tujunga 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 Tujunga
Every new detached ADU in Tujunga must meet ignition-resistant construction standards that include ember-resistant vents, Class A roofing assemblies, and fire-rated exterior wall systems. These are mandatory LADBS requirements when the VHFHSZ flag applies, and they add roughly $8,000-$18,000 to the material cost of a typical detached unit. We verify the fire-zone map before we submit your permit set, so those materials are in the written price from day one, not discovered at plan check. For an exact scope on your lot, call (971) 497-2402.
Under City of Los Angeles ADU ordinance, you can build a detached ADU up to 1,200 sq ft regardless of lot size, with rear and side setbacks liberalized to 4 feet. On a 10,000 sq ft Tujunga lot, a 1,000-1,200 sq ft 2-bedroom unit with a modest yard left over is very achievable. The limiting factor here usually isn’t the ordinance. It’s your existing electrical service and how much site preparation the canyon-side soil requires. Call (971) 497-2402 and we’ll walk your lot with you and put the exact size and price in writing.
If your lot sits on the mountain-facing side of Tujunga, near the Station Fire burn scar or within a known debris flow path, we require a geotechnical report before we finalize your foundation design. Skipping it has caused slab movement and cracked siding on ADUs within two winters of construction. We write the geotech assessment into your contract as a line item, typically $3,000-$6,000, so there’s no surprise later. Call (971) 497-2402 and we’ll tell you whether your specific parcel triggers the requirement.
Most 1940s-1960s Tujunga homes still run on 60-100 amp electrical service, and adding a detached ADU with a kitchen, bath, and laundry typically pushes you past capacity. If we don’t catch it early, final electrical inspection fails and you’re paying for an emergency panel swap weeks over schedule. We check your panel on the first walkthrough and write the upgrade, usually to 200 amps and typically $3,500-$6,000, into the original written price. That’s Haven Standard practice. Call (971) 497-2402 to get your project scoped correctly the first time.
Yes, prefab ADUs from Abodu, Cover, and Dvele can be installed in Tujunga, but the factory wall assemblies, vents, and roofing must meet VHFHSZ ignition-resistant standards before you order the unit. Some standard factory configurations pass; others need upgrades specified at purchase time. We handle that verification as part of our single-contract permit and site prep work, so the unit that arrives at your Tujunga lot is configured to pass LADBS plan check, not to get flagged with a stop-order. Call (971) 497-2402 and we’ll confirm which prefab brands work for your specific parcel.
Get Your Written Price for a New Detached ADU in Tujunga
You’ll get a fixed, written price before any work begins. You’ll get a documented photo record on every visit. You’ll get a permit set that accounts for Tujunga’s fire-zone requirements from the first submittal, not the third. If the finished ADU isn’t built to the permitted drawings, we make it right under our 365-Day Done Right Promise. Nadia Ellery leads our design-build studio, and she reviews every Tujunga plan set personally before it goes to LADBS. Call (971) 497-2402 to schedule your free estimate, or bring us a competing written bid and we’ll provide a Free Second Opinion. The job gets one written price. That’s the whole point.
Written by Nadia Ellery, Owner at Ellery ADU Studio, serving Tujunga since 2015.