Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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After
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AfterFast, Reliable Home Additions & ADU Across Van Nuys
Home additions in Van Nuys typically run $45,000 to $130,000 for a room addition, while a new detached ADU lands between $90,000 and $220,000 depending on utility runs, foundation work, and finish level. Most Van Nuys projects take 4 to 9 months from permit submittal to final inspection, but the real variable on a tight lot is access. We’ve been working Home Additions & ADU in Van Nuys long enough to know that a 5,000-square-foot lot with zero staging room changes the quote before the first board is cut. If you’re planning a second story, a garage conversion, or a backyard ADU near Sepulveda or Van Nuys Blvd, call Barrett & Sons Construction at (877) 610-1318 for a free estimate and a straight answer about what your specific site can handle.
Why Barrett & Sons Construction Is Van Nuys’s Preferred Home Additions & ADU Company
We’re the Home Additions & ADU crew that answers our own phone. Tom Barrett started this company in 1998, and Tom’s sons run the crews that show up in Van Nuys. You’ll see the same faces from permit pull to punch list, not a rotating cast of subcontractors. When a Van Nuys homeowner on a quiet street off Victory Blvd calls with a question about their garage conversion, they talk to someone who has actually stood in their garage. That matters when you’re about to spend six figures.
Our customers in 91401, 91405, and 91411 keep blue folders of our change orders because every scope line, every allowance, every adjustment is on paper before work proceeds. No verbal side deals, no end-of-job invoices that look nothing like the original number. The permit inspector works for you, not for me, which is exactly why we pull permits and sign inspections on every eligible job. Ask anyone on your street, or look up Tom Barrett’s license number yourself. It’s published, it’s verifiable, and it’s been the same name on the truck for over 29 years.
Our Home Additions & ADU Services in Van Nuys
ADU Design & Permitting
Adding an ADU in Van Nuys means navigating more than Title 24. Any structure within the Van Nuys Airport influence area may trigger FAA Part 77 airspace review, and that’s before we even get to DBS plan check. We prepare drawings that account for your lot’s actual constraints, file with the City of LA, and track the permit until it’s issued. If your ADU sits on a block with soft-story retrofit obligations, we sequence the paperwork so one approval doesn’t hold the other hostage.
Garage Conversion ADU
Those 1960s and 1970s Van Nuys garages with tuck-under parking are some of the most common ADU conversion candidates we see. But the slab work is the wild card. Many of these floors settled or cracked during the 1994 Northridge earthquake, and the original drain lines are often bellied. We saw-cut, test, and replace as needed, and we write it all into the scope before demo starts. A garage conversion in Van Nuys typically runs $30,000 to $80,000, but the unknown conditions are why we do a structural review before we quote.
New Detached ADU
A detached ADU on a Van Nuys lot usually means working within five to ten feet of the rear property line, which is where access gets real. Where does the excavator sit? Where do we stage the framing package? On lots along Vanowen or Kittridge, we often plan material deliveries in waves so the site doesn’t choke the street. New detached ADUs here run $90,000 to $220,000, and the range swings on foundation type, utility trenching distance, and whether the site requires shoring due to adjacent structures.
Junior ADU & Interior Conversion
A junior ADU inside your existing Van Nuys home is the fastest, leanest way to add a rentable unit, typically using 500 square feet or less of underused interior space. In post-WWII stucco homes, this often means converting a den, attached sunroom, or oversized laundry room. The mechanical and electrical upgrades are usually the biggest line items, especially in homes still running 60-amp fuse boxes. We scope those upgrades in writing before the first wall comes down.
Second Story Additions
Going up in Van Nuys is smart when you have a small lot and a big need. But the FAA Part 77 height restrictions around Van Nuys Airport are a hard constraint that doesn’t exist in Sherman Oaks or Studio City. Before we draw plans, we confirm the allowable roofline height for your parcel. We also check the foundation and framing below, because adding a story to a 1950s wood-frame house built for one floor is a structural conversation, not just a design one.
What happens when you call
- 1
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 Van Nuys
When you’re spending this much on a home addition or ADU, the materials should be names you can look up. We install Techo-Bloc and Cambridge pavers on ADU entries and outdoor living spaces, and we use Quikrete for structural concrete work where site access makes a full truck pour impractical. No mystery materials off the back of a van. If a brand matters to you, tell us and we’ll line up the local supply in Van Nuys before the crew arrives.
Common Home Additions & ADU Problems We See in Van Nuys Homes
- Hidden Northridge earthquake damage. Walls in 1960s and 1970s Van Nuys buildings were often cosmetically re-stuccoed after 1994 without structural repair. We find cracked cripple walls, severed hold-downs, and buckled plywood sheathing behind fresh paint, and it has to be engineered before we can add load.
- Van Nuys Airport height restrictions. Second-story additions and ADU rooflines near VNY can trigger FAA Part 77 review, and a plan that clears LA’s building code can still be rejected on airspace grounds. Getting this check early saves weeks of re-drawing.
- 60-amp fuse-box panels. An ADU with a mini-split, electric range, and laundry will not run on a 1960s panel. Panel upgrades are one of the most common, most necessary additions to the scope, and we price them honestly up front.
- Tight-lot staging chaos. If we cannot stage materials and park a dumpster on your Van Nuys lot, we have to coordinate street permits and sequenced deliveries. Ignoring this turns a clean site into a neighborhood dispute and blows the schedule.
Pricing for Home Additions & ADU in Van Nuys, CA
Here’s what you can expect in Van Nuys’s market, with real ranges we quote from every week. A room addition runs $45,000 to $130,000. A new detached ADU lands between $90,000 and $220,000. A garage conversion sits at $30,000 to $80,000. The spread comes down to site access, foundation condition, utility trenching distance, and whether FAA Part 77 review applies to your parcel. We price all of it in writing, with every allowance named before work begins. Call (877) 610-1318 for a free estimate, and we’ll walk your lot with you before we put a single number on paper.
| Project Type | Van Nuys Price Range |
|---|---|
| Home Addition | $45,000 - $130,000 |
| ADU Construction | $90,000 - $220,000 |
| Garage Conversion | $30,000 - $80,000 |
Working On a Tight Van Nuys Lot
Van Nuys lots are small. Fifty feet wide is common, and many are narrower. That means any addition or ADU is a conversation about access before it’s a conversation about square footage. Where does the lumber go? Can a concrete pump reach the back corner? Is there room for a dumpster without blocking the neighbor’s driveway?
We plan for this before we quote. On a recent garage conversion on a 5,000-square-foot lot near the Van Nuys/Sherman Oaks border in 91401, our crew converted a 1970s tuck-under garage into a 480-square-foot ADU. The original drain lines had bellied from 1994 earthquake movement, so we saw-cut the slab to run new utilities. Before any structural demo, we coordinated a shared-wall notice with the adjacent triplex. The homeowner got their final inspection sign-off just as the first Santa Ana winds of fall tested the new roof edges.
Shared walls and party-wall covenants are a fact of life on dense Van Nuys blocks. If your addition butts against a neighbor’s structure, we’re not just pulling your permits. We’re making sure the notice requirements are met so a stop-work order doesn’t land mid-framing. Noise ordinances and construction-hour limits near residential Van Nuys streets are enforced, and we run our crews on a schedule that keeps the neighbors from calling the city. A clean site is the cheapest form of goodwill on a tight lot.
We Also Serve Cities Near Van Nuys
If you’re outside Van Nuys but nearby, we also work in Valley Glen, Sherman Oaks, Encino, and North Hills. The rules change block by block around here, especially near the airport influence zone, so give us a call and we’ll tell you what applies to your specific parcel. Reach Barrett & Sons Construction at (877) 610-1318.
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 - Home Additions & ADU in Van Nuys
Yes. Parcels in portions of 91405 and surrounding Van Nuys zip codes fall within the FAA Part 77 airspace review zone tied to Van Nuys Airport. That means your proposed roofline height must be reviewed against approach and departure surfaces before the city will issue a building permit. We run this check early in design so you don’t pay for drawings that get rejected. Call (877) 610-1318 and we’ll check your parcel against the current airspace map.
In most cases, yes, and the city and your neighbor both care. If your addition touches or builds over a shared wall, you’ll typically need a party-wall agreement or at minimum formal notice before structural work begins. We handle the paperwork, but we recommend talking to your neighbors early. It keeps the project moving and keeps relationships intact on blocks where homes sit close together. Call us and we’ll explain what your specific wall configuration requires.
We sequence deliveries in waves, not all at once. Framing arrives when the foundation is ready. Drywall arrives when the rough-in inspections pass. On lots too tight for a standard dumpster, we use smaller bins and schedule more frequent pickups. We also lay ground protection on the walkway from the street to the work area so the site doesn’t track mud onto your neighbor’s front walk. It’s disciplined, and it’s part of how we quote a Van Nuys job correctly from the start.
Usually not. A 1960s Van Nuys home on a 60-amp fuse box cannot safely feed an ADU with a mini-split, electric range, and laundry circuit. The panel upgrade becomes part of the scope, and we write it as a named line item before work starts, not as a surprise after rough-in. The upgrade also brings your main house closer to current code, which your home insurer will notice. Call (877) 610-1318 and we’ll come look at your panel and give you an honest line-item quote.
Van Nuys regularly hits triple digits from June through September, and the San Fernando Valley floor holds heat long after sunset. That means your sunroom or enclosed patio roof needs Title 24 energy compliance taken seriously: cool roofing material, upgraded wall insulation, and high-SHGC glazing so the room is actually usable in summer instead of becoming a glass oven. We spec these materials as standard on Van Nuys projects, not as an upsell. Call (877) 610-1318 for a free estimate on a sunroom that works in August.
Get Your Free Van Nuys Home Addition or ADU Estimate
If you’re planning a room addition, garage conversion, or ADU in Van Nuys, start with a walkthrough. We’ll look at your lot, check the FAA Part 77 airspace constraints, assess your foundation and panel, and give you a written scope with real numbers. No national-company phone games, no price that changes when the crew shows up. Tom Barrett and his sons have been doing this since 1998, and a live person answers our phone 24/7. Call (877) 610-1318 today to schedule your free estimate.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Van Nuys and the surrounding San Fernando Valley. Tom publishes his name, address, and license number, and stands behind every job with the 90-Day Done Right Promise.