







A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable Home Addition Contractor Across Panorama City
Adding a bedroom, bathroom, or second story to a home in Panorama City means working with houses built between 1945 and 1955, most of which sit on compact lots with shallow setbacks and original electrical panels that were never designed for modern loads. We work on these ranches every week, and we know what LADBS inspectors look for here before they sign off on rough framing. If you’re planning a home addition in Panorama City, call us at (559) 249-3776 for a written price before any work starts. That price includes the seismic, drainage, and panel upgrades your specific house actually needs, not a vague allowance that changes after the crew arrives.
Why Seedling ADU Woodland Hills Is Panorama City’s Preferred Home Addition Contractor Company

Most of the homes we work on in Panorama City were built before the 1981 seismic retrofit standards existed. That single fact shapes nearly every addition we price here, because it determines whether your project needs cripple-wall bolting, plywood shear panels, or foundation work before we can frame anything above it. We know which streets near Chase, Cantara, and Roscoe have the original 60-amp panels, which ones have already been upgraded, and what that means for your quote.
Every Panorama City project we take on gets a written price before tools come out. Not an estimate, not a ballpark, a fixed number. When LADBS requires a seismic upgrade mid-project, that’s already in your price because we saw it coming. Our customers in Panorama City tell us the same thing: the crew showed up when they said they would, covered the floors, kept the kids and pets safe, and left the work area clean before they drove off.
Ben Ortega leads every Panorama City addition from the first site walk to the final inspection. He’s the person you’ll talk to when you call (559) 249-3776, and he’s the one who signs off on your written price. No sales handoffs, no project-manager roulette. The same person who walks your lot is accountable for the number and the result.
Bathroom Addition Contractor in Panorama City
A bathroom addition contractor in Panorama City works most often on 1940s and 1950s ranches where the existing single bathroom sits near the back of the house and the family has outgrown it. These projects typically run $35,000 to $65,000 depending on whether we’re converting a hallway closet, bumping out a rear wall, or building above a garage. The plumbing in these homes is almost always original galvanized, which means your bathroom addition quote includes replacing the supply lines feeding the new fixtures, not just tying into pipes that are already sixty years past their useful life.
Slab and Drainage Considerations
Most Panorama City ranches sit on slab foundations, so adding a bathroom means cutting concrete to run new drain lines. We scope the slab thickness before pricing so there are no surprises when the saw comes out. Flat or low-slope roofs on the existing house also mean the new bathroom’s vent stack has to be flashed correctly, or you’ll get leaks at the roofline during the first heavy winter rain.
Electrical and Ventilation
A bathroom addition needs a dedicated GFCI circuit and an exhaust fan that vents outside, not into the attic. On homes with 60-amp panels, that upgrade is part of the job, not an optional extra. High-efficiency bathroom fans are standard because Panorama City summers push attic temperatures above 130 degrees, and a cheap fan will fail within two seasons.
Bedroom Addition Contractor in Panorama City

A bedroom addition contractor in Panorama City spends a lot of time working with the 1945 – 1955 housing stock: single-story stucco ranches with attached garages, concrete slabs, and roof framing that predates modern wind-load standards. Bedroom additions here typically run $55,000 to $110,000. The range is wide because some homes need only a bump-out with a new footing, while others require full cripple-wall retrofits and a new electrical subpanel before a single stud goes up.
Above the Garage
Adding a bedroom above an attached garage is one of the most common requests we get in Panorama City, and it’s also the one where seismic work matters most. Garage walls on pre-1981 homes were never designed to carry a second story, so the inspector will require shear panels, hold-downs, and possibly a structural beam before framing can pass. We include that engineering in the price on the front end.
Bump-Outs and Setbacks
On lots where the rear yard is small, a bump-out addition that extends the existing footprint by four to six feet often makes more sense than a detached structure. Panorama City’s zoning has specific side-yard and rear-yard setback rules that vary by lot width, and we check those before you spend money on plans. A two-foot difference in the setback can change the whole design.
Trusted Brands We Service in Panorama City
When your addition involves prefabricated components, we work with brands that hold up to San Fernando Valley summers and the occasional heavy winter rain: James Hardie siding and trim for rot and fire resistance, Tuff Shed structures where an accessory building fits the lot better than a site-built frame, and Abodu and Cover prefab units when a detached ADU paired with your addition makes sense. We stock common parts and materials for these systems locally, which means fewer days waiting on shipments and faster turnaround for Panorama City homeowners. You’re not locked into whatever brand the builder happens to prefer; you choose what fits your house and your budget, and we build it.
Common Home Addition Contractor Problems We See in Panorama City Homes
- Original 60-amp electrical panels failing inspection: Panorama City ranches built in the late 1940s and early 1950s almost always have 60-amp service. Run one new bedroom and bathroom off that panel, and LADBS will issue a stop-work order until you upgrade to at least 100 amps, often 200.
- Pre-1981 cripple walls triggering seismic retrofit requirements: The inspector will not let you cover framing on a second-story or bump-out addition if the original cripple walls haven’t been bolted and sheathed. That’s a life-safety correction, not a suggestion.
- Flat-roof flashing done with standard details: Panorama City gets short but intense winter rain events, and low-slope roofs need oversized scuppers and extra membrane detailing at the addition’s roofline. Standard flashing details leak, and the leak shows up months later, after the ceiling is painted.
- Original galvanized supply lines failing under new load: Adding a bathroom means new fixtures, and new fixtures demand consistent pressure. Galvanized lines from the 1950s are usually corroded inside, and half-measures like partial repipes create more problems than they solve.
Pricing for Home Addition Contractor in Panorama City, CA
A bathroom addition in Panorama City generally runs $35,000 to $65,000, and a bedroom addition runs $55,000 to $100,000. Second-story additions start around $120,000 because they almost always require seismic upgrades to the first-floor walls, and garage conversions run $45,000 to $80,000 depending on condition. What moves your price: lot size and setback constraints, the age of your electrical panel, whether your cripple walls need retrofitting, and the roof’s drainage configuration. Our quotes are written, fixed, and include the compliance work. We don’t hand you a number that assumes nothing will go wrong in a 1951 house; we hand you a number that already accounts for it. Call (559) 249-3776 to get yours, free.
We Also Serve Cities Near Panorama City
We serve homeowners throughout the San Fernando Valley, including Home Addition Contractor in Panorama City, plus Van Nuys, Reseda, Northridge, and Encino. If you’re on the edge of Panorama City or in a neighboring neighborhood, you’re still in our service area. The same written pricing, the same 365-Day Done Right Promise, and the same local crews apply wherever your home stands.
Serving Panorama City, CA - Our Local Coverage Area
We’re based in the Panorama City 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 Home Addition Contractor in Panorama City
Yes, in most cases. If your home was built before 1981 and the addition increases the building’s floor area or adds a second story, LADBS will require the existing cripple walls to be bolted to the foundation and sheathed with plywood before you can cover any new framing. This isn’t optional, and it’s not a penalty. It’s the same standard every house built after 1981 already meets. Call (559) 249-3776 if you want us to assess whether your specific home triggers the retrofit.
Heavy winter rains in Panorama City expose any flaw in flat or low-slope roof detailing, which is why LADBS requires proper scupper sizing and drainage on additions with these roof types. We detail every addition’s roofline with the drainage capacity rated for the Valley’s short but intense storm events. Cutting corners on flashing means a leak inside the new bedroom the first winter, and repairs cost more than doing it right.
Most Panorama City homes built in the 1940s and 1950s have 60-amp panels, and any addition that adds a bedroom, bathroom, or second story will require an upgrade to at least 100 amps, usually 200. This includes replacing the original panel, often the meter main, and sometimes the service drop from the utility pole. We factor this into your written price, so you never discover a $4,000 panel upgrade after the crew has already started.
Yes. Panorama City lots are typically 50 feet wide or less, and the original ranches were built to the maximum footprint allowed at the time. That leaves very little room for side or rear additions without encroaching on required setbacks. A bump-out addition or a second-story addition often fits better than a ground-level expansion, and we check the specific zoning for your lot before we recommend a design. Call (559) 249-3776 to discuss what your lot allows.
Documented seismic retrofitting, including the cripple-wall bolting and shear panels required for pre-1981 additions, can lower your homeowners insurance premium and may make you eligible for retrofit discounts that some California insurers offer. The key is documentation: the permit records, inspection sign-offs, and photos that prove the work was done to code. We provide that paperwork as part of every Panorama City addition, so you’re not stuck explaining the work to an adjuster months or years later. Call (559) 249-3776 to ask how we document the retrofit on your project.
What a Panorama City Addition Quote Really Needs to Include
When you’re pricing a home addition in Panorama City, the quote has to include three things that a contractor working in newer parts of the Valley might never mention. First, the seismic work: cripple-wall bolting, shear panels, and hold-downs on any pre-1981 home. Second, the electrical panel upgrade: from 60-amp to 100 or 200-amp service, including the meter main if yours is original. Third, the roof drainage details for flat or low-slope sections, because Panorama City’s winter rains will find any shortcut. If a quote leaves any of those out, the number isn’t real. On Chase Street near Van Nuys Boulevard, our crew recently converted a 1951 ranch’s attached garage into a bedroom addition. The original 60-amp panel and galvanized supply lines had to be fully replaced, and because the home predated 1981 seismic standards, the inspector required bolting the cripple walls and adding plywood shear panels before we could frame the new bathroom above the old slab. That job’s written price included every one of those line items before we started, and the final bill matched it. That’s how we quote every Panorama City addition.
Call Seedling ADU Woodland Hills for Your Panorama City Home Addition
The next step is a free, no-pressure site visit. Ben Ortega will walk your property, look at your lot’s setbacks, check your electrical panel, and give you a written price that accounts for every upgrade Panorama City’s building code and inspectors will require. You’ll know what the job costs before you sign anything, and you’ll know exactly what the crew will do, what they’ll protect inside your home, and what the finished addition will look like. Call (559) 249-3776 to schedule your free estimate today.
Written by Ben Ortega, Owner at Seedling ADU Woodland Hills, serving Panorama City and the San Fernando Valley.









