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 North Hollywood
A room addition or ADU in North Hollywood typically runs $45,000 to $130,000 for a stick-built addition, and $90,000 to $220,000 for a new detached ADU. We’re Barrett & Sons Construction, and we’ve been building in the Valley long enough to know that a North Hollywood job hits different than a Burbank job or a Studio City job. The soils under Magnolia Park aren’t the same as the hillside lots off Cahuenga, and the LADBS counter treats a 1962 garden apartment on Klump Avenue differently than a 1954 rancher on Bakman. Call (877) 610-1318 and we’ll walk the property with you, pull the address history, and tell you straight what the permit counter is going to ask before you spend a dime on plans.
What most people don’t know about North Hollywood until they’re standing in the middle of it: the neighborhood’s dense stock of 1960s and 70s garden apartments with tuck-under parking means any ADU addition on a 91601 through 91606 property can trigger a soft-story retrofit compliance flag at the LADBS permit counter. That’s not a rumor. We see it weekly. A homeowner files for a detached ADU behind a 1968 two-story apartment building on Tujunga, and the counter runs the parcel against the city’s soft-story database, and suddenly the ADU permit is held hostage until the main building’s seismic retrofit is resolved. Contractors who work Burbank and Glendale never hit this. We do, and we know how to clear it.
Why Barrett & Sons Construction Is North Hollywood’s Preferred Home Additions & ADU Company
We’re not a franchise dispatching strangers. Tom Barrett started this company in 1998, and his sons run the crews that work North Hollywood. When you call our number, a live person answers. Not a voicemail box, not an out-of-state call center. If Tom’s on a ladder, someone who knows the job picks up.
Our Home Additions & ADU team has pulled permits at the Van Nuys LADBS office more times than we can count. That matters in North Hollywood specifically because the counter here operates on a different set of compliance checks than anywhere else in the Valley. If your main building is a soft-story apartment and you’re adding a second-story addition, the plan checker will flag it. If your 1958 stucco home has an unpermitted converted garage from the 1980s, the ADU permit will surface it. We’ve already seen every version of this conversation, and we know what paperwork clears it.
We also know the neighborhood. We’re on Burbank Boulevard, Vineland, Magnolia. We’ve framed additions near the NoHo Arts District where the LADBS adaptive-reuse overlay changes what’s allowed on a mixed-use lot. We’ve poured ADU slabs in Valley Glen where the post-war lots are tight and the setback math gets hairy. Tom publishes his name, his address, and his license number. Look it up before you sign anything. That’s not a dare; it’s how we’ve done business for 29 years.
Our Home Additions & ADU Services in North Hollywood
ADU Design & Permitting
A North Hollywood ADU permit is not a paper shuffling exercise. Between the soft-story compliance cross-check, the LADBS plan review backlog, and the specific zoning overlays in the NoHo Arts District, a design that sails through in Burbank can stall for months at the North Hollywood counter. We handle the full design and permitting path: lot survey, as-built documentation, LADBS filing, soft-story clearance, and inspection coordination. The permit inspector works for you, not for me. That’s why we like him. If the plans say Simpson H25A hangers on the ledger, the inspector will check. We spec them right the first time.
New Detached ADU
A new detached ADU in North Hollywood is the safest way to add rental income or a family suite without touching your main house’s foundation. But the site matters more here than almost anywhere in LA. If your rear yard sits on the old alluvial fan below the Verdugo Hills, we’re dealing with compacted clay and sometimes debris fill from 1960s grading. That changes footing design. If the property is within the 91606 ZIP where the garden apartments cluster, the soft-story flag becomes the first order of business. We pull permits, we pour footings to the LADBS standard, and we build with materials that survive Valley heat and irrigation mist. A typical new detached ADU in North Hollywood runs $90,000 to $220,000 depending on size, finish level, and site conditions.
Garage Conversion ADU
Garage conversions in North Hollywood are popular because the older homes on Chandler and Burbank often have detached two-car garages at the alley line. The question is whether you’re converting a 1950s single-car with a slab floor and a flat roof, or a 1970s two-car with tuck-under parking that’s structurally tied to an apartment building. Those are two completely different jobs. The first one is a standard conversion, around $30,000 to $80,000. The second one is a seismic compliance project hiding inside an ADU permit. We tell you which one you have before you pay for drawings.
Junior ADU & Interior Conversion
A junior ADU in North Hollywood usually means carving a 500 square foot rental out of an existing single-family floor plan. It’s the most cost-effective path to legal rental income, but it hits different in older North Hollywood homes. We find unstrapped water heaters, original 1950s electrical panels with no room for a subpanel, and hallways that don’t meet the current egress width. These are fixable, but they have to be fixed on the permit drawings, not discovered mid-rough. We scope it in writing before the first wall comes open.
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 North Hollywood
We stock and install PGT and CGI window lines for North Hollywood sunrooms and enclosed patios because the San Fernando Valley afternoon sun will make cheap vinyl weep by the third summer. PGT’s aluminum-reinforced frames hold their seals in 105-degree heat. CGI’s laminated glass cuts the heat gain that turns a west-facing sunroom into an oven off Vineland. This isn’t about brand snobbery. It’s about not getting a callback in August because the room you framed in April doesn’t hold temperature anymore. The allowance that isn’t on paper is a surprise waiting for a date. These windows go on the allowance line, in writing.
Common Home Additions & ADU Problems We See in North Hollywood Homes
- Soft-story compliance flags on ADU permits. The LADBS system cross-checks the parcel’s soft-story status before issuing certain permits. Owners who haven’t completed their Tier 1 retrofit can be barred from other permitted work, so a routine bathroom remodel can suddenly require resolving a years-old seismic compliance notice before the counter will issue anything.
- Corroded galvanized hangers on room addition ledgers. On a room addition for a 1958 stucco home near Vineland and Burbank, our crew found the original galvanized hangers on the new ledger connection had corroded after just a few seasons of valley dust and sprinkler overspray. We pulled the permit for a load-bearing connection upgrade and swapped to hot-dip galvanized connectors and stainless fasteners before sheathing went up, so the inspection sign-off came on the first pass.
- Thermal warping of standard vinyl window frames. Sunroom additions that face the afternoon San Fernando Valley heat without coastal-spec glass and aluminum-reinforced frames fail fast. We see air leakage and stuck sashes by the third summer. The fix is a PGT or CGI coastal-spec package, which costs more upfront and costs far less over ten years.
- Rust bleed through stucco on second-story additions. Inland-grade galvanized hardware on an exterior connection point will rust within two years in North Hollywood because of the irrigation mist and high PM10 dust the Valley produces. The cheap hardware spec is not cheaper. It’s a stucco tear-out and a re-inspection.
Pricing for Home Additions & ADU in North Hollywood, CA
| North Hollywood Home Additions & ADU | Typical Price Range |
|---|---|
| New Detached ADU | $90,000 - $220,000 |
| Room Addition | $45,000 - $130,000 |
| Garage Conversion ADU | $30,000 - $80,000 |
We Also Serve Cities Near North Hollywood
We run crews to Studio City, Universal City, Burbank, and Valley Glen from our Los Angeles office, and we know the permit desk differences between each one. If you’re just outside the North Hollywood lines, call and ask. Our Home Additions & ADU in North Hollywood service area covers the Valley side clean, and we’ll tell you straight if your address falls inside it or not.
Serving North Hollywood, CA - Our Local Coverage Area
We’re based in the North Hollywood 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 North Hollywood
Will my North Hollywood ADU permit be delayed because my main house is a 1960s apartment building with tuck-under parking?
Yes, it almost certainly will be flagged. The LADBS soft-story compliance database cross-references the parcel when you file for an ADU permit on a 1960s or 70s garden apartment building with tuck-under parking, and if the main building’s Tier 1 retrofit isn’t complete, the ADU permit goes on hold until the seismic work is resolved. We handle this exact situation all over the 91601 through 91606 ZIP codes. Call (877) 610-1318 and we’ll run your address against the database before you spend on plans.
What fasteners and hangers should I spec for a room addition in North Hollywood to avoid rust?
You want hot-dip galvanized connectors and stainless fasteners on any exterior ledger, hanger, or strap. The Valley’s irrigation mist and high PM10 dust will corrode standard electro-galvanized hardware within a couple of seasons. We spec hot-dip galvanized Simpson connectors and stainless fasteners on room additions in North Hollywood, and the inspection sign-off comes on the first pass because the inspector sees the right hardware on the right connection.
Why does a coastal-spec window package cost more for a North Hollywood sunroom addition than an inland-spec package?
The coastal-spec package has aluminum-reinforced vinyl or fiberglass frames and laminated glass that won’t warp or leak under the San Fernando Valley’s afternoon heat. The inland-spec package will survive a mild summer and fail by the third one. On a sunroom that faces the afternoon sun off Vineland or Burbank, the coastal-spec window is not an upgrade. It’s the minimum viable product. The price gap is roughly $200 to $500 per opening depending on size, and paying it now avoids a full removal and reinstall later.
Can I convert my detached garage into an ADU without triggering a soft-story retrofit on my 1958 single-family home?
Usually yes. Soft-story retrofit triggers are tied to tuck-under parking and open-ground-floor apartment buildings, not to a 1958 single-family home with a detached garage. But your garage conversion can still surface other things: an unpermitted electrical panel, a slab that’s too thin for a legal ADU, or an alley setback that doesn’t meet current ADU code. We pull the property record before we quote, and we tell you what the counter is going to ask.
How do I handle the draw schedule for a North Hollywood ADU when the permit is held up by a soft-story compliance flag?
You don’t start the draw schedule until the soft-story clearance is in hand. If you write draws against a permit that hasn’t cleared, you’re financing someone else’s compliance problem. We structure the contract so the first draw is due at permit issuance, not before, and we put that in writing. If the soft-story flag pushes the permit out by months, the draw schedule stays frozen until the LADBS counter issues. Call (877) 610-1318 for a written proposal that spells out exactly how the draw schedule works on your North Hollywood parcel.
Contact Barrett & Sons Construction in North Hollywood
If you’re planning a home addition or ADU in North Hollywood, call us at (877) 610-1318 for a free estimate. Tom Barrett and his sons run the crews, every permit gets pulled, and every price change arrives in writing before a single nail moves. We back every job with the 90-Day Done Right Promise. One call brings Tom back if it’s not right. We publish our name, our address, and our license number. Ask anyone on your street, or look us up yourself.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving North Hollywood since 1998.