Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterFast, Reliable Home Additions & ADU Across Tujunga
Most home additions and ADU projects in Tujunga run between $45,000 and $130,000, with detached ADUs climbing higher, and the big variable is rarely the square footage. It’s the hillside. Tujunga sits against the Angeles National Forest, and most lots in 91042 and 91043 fall inside Los Angeles’s Very High Fire Hazard Severity Zone, which triggers Chapter 7A ignition-resistant construction standards that flat-lot contractors in the valley never have to think about. Our crews know what that means before we price the job, not after the inspector brings it up. If you’re planning an addition or ADU in Tujunga, call (877) 610-1318 for a free estimate from a team that already understands the terrain.
Why Barrett & Sons Construction Is Tujunga’s Home Additions & ADU Team
Tom Barrett started this company in 1998, and he still answers the phone. His sons run the crews. When we say we know Tujunga, we mean we’ve dug footings near the mouth of Big Tujunga Canyon, watched inspectors require deeper grade beams on alluvial fan lots, and learned to price Chapter 7A upgrades into scopes from day one. The permit inspector works for you, not for me, which is exactly why we like him walking our jobs. Every permit gets pulled, every inspection gets signed, and every price change arrives in writing before work begins.
You won’t get a franchise dispatcher sending strangers to your door. You get Tom’s name, Tom’s address, and Tom’s license number, all published for you to verify before you sign anything. Our 90-Day Done Right Promise is written on every contract: if something isn’t right, one call brings Tom back. That’s the whole deal.
Our Home Additions & ADU Services in Tujunga
ADU Design & Permitting
Designing an ADU in Tujunga means navigating hillside setbacks, fire-zone materials requirements, and drainage rules that change block by block. We handle the full plan set, the city submittal, and every permit pull so you don’t spend six months figuring out what the county wants. We’ve shepherded enough Tujunga ADUs through plan check to know which details get flagged and how to design around them on the front end.
Garage Conversion ADU
Converting a garage into an ADU in Tujunga is usually the most affordable path to a rentable unit, with most projects landing between $30,000 and $80,000. Older 1940s and 1950s garages in this area often need seismic upgrades under Chapter 7A review, plus new foundation work if the slab was never engineered for living space. We write those costs into the quote up front so there is no surprise invoice at the end.
New Detached ADU
A new detached ADU in Tujunga typically runs $90,000 to $220,000, and on hillside lots the foundation scope can push toward the upper end quickly. Loose alluvial soils near the canyons regularly require caissons or grade beams instead of standard footings, which is a condition crews coming from valley-floor jobs get caught on. We price for what’s under the ground before we break it.
Junior ADU & Interior Conversion
A junior ADU, often created from an existing bedroom or bonus room, is the most budget-friendly way to add legal living space in a Tujunga home. These conversions generally run $45,000 to $70,000 because the structural work already exists. The catch in this area is usually egress, fire separation, and proving the existing space was permitted in the first place. We walk the property and tell you plainly what will pass inspection and what won’t.
We also handle Kitchen Remodeling in Tujunga and Bathroom Remodeling in Tujunga when an addition project grows into a full interior overhaul. It’s common for a room addition to pull the kitchen or bath into the design, and it’s easier when one crew owns the whole scope.
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.
Trusted Brands We Service in Tujunga
We stock and install windows and doors from Simonton and PGT, and we carry Ply Gem product lines for ADU and addition work where the Chapter 7A code requires tempered or impact-rated glass. These are brands you can look up, not mystery materials off a van. For Tujunga’s fire-zone requirements, PGT’s impact-rated lines are often the right call on canyon-facing elevations where ember exposure is a genuine concern. If a brand starts underperforming on a Tujunga job, we find out fast because we’re the ones installing it, not a subcontractor we’ll never see again.
Common Home Additions & ADU Problems We See in Tujunga Homes
- Chapter 7A fire-zone requirements catching homeowners off guard. The vast majority of Tujunga sits in a Very High Fire Hazard Severity Zone, which means any substantial renovation triggers ignition-resistant construction rules: ember-resistant vents, fire-rated eaves and soffits, Class A roofing. A contractor who doesn’t price these in is handing you a change order down the road.
- Hillside foundations that need caissons, not standard footings. Near the mouth of Big Tujunga Canyon, loose alluvial fan deposits are common, and inspectors have come to expect deepened foundations as standard. We’ve had city inspectors sign off on grade beams on jobs where a valley-floor crew would have poured a conventional footing and then fought the correction.
- Post-fire drainage and debris-flow exposure. The Station Fire in 2009 burned the hillsides directly above Tujunga, and every hillside project near Big Tujunga Canyon now carries drainage engineering that didn’t exist in the original home. Grading and retaining-wall scopes on these lots routinely run well beyond what a flat-lot project would need, and we plan for it from the first walkthrough.
- Older homes with unpermitted additions that complicate new permits. Tujunga’s 1940s and 1950s bungalows often have a closed-in porch or converted garage that was never permitted. When a new addition triggers plan review, the city wants those legacies legalized or brought to current code. We handle the paperwork without making you feel like a criminal.
Pricing for Home Additions & ADU in Tujunga, CA
A home addition in Tujunga typically runs $45,000 to $130,000. A garage conversion ADU lands between $30,000 and $80,000. A new detached ADU on a flat or gently sloped lot runs $90,000 to $220,000, with hillside lots pushing higher. What changes the number most in this area is the hillside itself: foundation depth, retaining-wall scope, drainage engineering, and Chapter 7A materials compliance. Every scope, every allowance, every price change arrives as a written change order before work happens. You’ll never get a phone quote and a different bill at the door. Call (877) 610-1318 to schedule a free estimate with a written line-item quote.
We Also Serve Cities Near Tujunga
Our crews work throughout the northeastern San Fernando Valley and the foothill communities above it. We regularly take on projects in Sunland, La Crescenta-Montrose, Shadow Hills, and Burbank. If you’re near the 210 or up against the Angeles National Forest, you’re in our service area. See our full coverage page for Home Additions & ADU in Tujunga service details and nearby communities.
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 - Home Additions & ADU in Tujunga
Plan review and permitting in Tujunga is typically the longest part of the process, often 4 to 8 months for a detached ADU under current city timelines. Once permits are in hand, we schedule your start date in writing, and the crew shows up on that date. Call (877) 610-1318 to get a realistic timeline for your specific property.
Yes, we take projects throughout both 91042 and 91043, from the flat streets off Foothill Boulevard up to the hillside lots near Big Tujunga Canyon and the edge of the national forest. Hillside access adds equipment and logistics planning, but we don’t turn the work away. The crew that shows up knows what the slope means for your foundation and drainage before we break ground.
In most cases, yes. Almost all of Tujunga sits within Los Angeles’s Very High Fire Hazard Severity Zone, so any new detached ADU, garage conversion, or substantial addition triggers Chapter 7A ignition-resistant construction standards. That means ember-resistant vents, fire-rated eaves and soffits, and Class A roofing materials. We build those costs into the quote from day one, so there’s no surprise when the plan checker flags it.
Yes, and the foundation is usually the reason. Loose alluvial soils near the canyons often require caissons or grade beams instead of standard footings, and retaining-wall and drainage scopes run heavier on slopes. A room addition that might cost $60,000 on a flat Pacoima lot could run $85,000 or more on a Tujunga hillside. We price from what the soil actually tells us, not from a flat-lot formula.
Every job carries our 90-Day Done Right Promise, written on the contract: if it’s not done right, Tom comes back and makes it right, one call. We also pass through manufacturer warranties on named materials, like Simonton and PGT windows, so you’re covered up and down the job. Call (877) 610-1318 for a free estimate and a written warranty explanation before you sign.
Contact Barrett & Sons Construction for Your Tujunga Home Addition or ADU
If you’re weighing a room addition, garage conversion, or detached ADU in Tujunga, the first step is a free walkthrough and a written line-item estimate. No phone number that goes to voicemail. No out-of-state call center. Call (877) 610-1318 and a live person answers. We’ll talk through your lot, your soils, your fire-zone requirements, and what the job will actually cost, in writing, before a single nail moves.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Tujunga and the northeastern San Fernando Valley.