A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateTrusted Home Addition Contractor for Long Beach Homeowners
Adding square footage to your Long Beach home is one of the smartest ways to gain livable space without leaving a neighborhood you love. Most homeowners start with two questions: what will it cost, and who exactly is going to show up at my door? We give you straight answers to both. Sutton ADU Long Beach has built room additions, sunrooms, second stories, and garage conversions across Long Beach since 2006, and every project runs on the Threshold Standard: a written price before any work starts, a 365-Day Done Right Promise in writing, and a crew whose name and photo you receive before they arrive. Call (562) 317-7042 to talk through your addition with a live person.
Sunroom Addition
A sunroom addition is a framed, glass-heavy room built onto the side or rear of your house, designed to pull in natural light while giving you usable square footage year-round. Homeowners in Long Beach choose sunrooms when they want a bright reading room, a plant space, or a casual dining area without the full cost of hiring a Long Beach Home Addition Contractor for a traditional room addition. Sutton ADU Long Beach handles the full build: slab or raised foundation, framing, glazing, electrical, and finish work. A modest Long Beach sunroom addition typically runs $45,000 to $90,000 depending on glass quality, foundation work, and interior finishes. We write the price down before the first tool is lifted.
Site and Exposure Planning
Long Beach afternoons can bake a west-facing sunroom if you don’t plan the glazing right. We walk the lot with you, check where the sun lands in July versus January, and recommend glass coatings or overhang depth so the room stays comfortable without running the AC nonstop. This pre-build planning is part of every sunroom quote, not an add-on.
Glazing and Comfort Options
Low-E double-pane glass is the default we recommend for Long Beach sunrooms. It cuts UV fade on furniture and keeps the room from turning into a hotbox. If you want a three-season feel, we can spec operable windows and a ceiling fan layout that pulls ocean air through. The written quote lists exactly which glass package you’re getting, so there’s no guesswork later.
Second Story Addition Contractor
A second story addition contractor builds upward instead of outward, adding a full or partial floor on top of your existing home. In Long Beach, where many lots are narrow and setbacks are tight, going up is often the only way to double your square footage without sacrificing yard space. Sutton ADU Long Beach has done second story additions in Belmont Heights, Bixby Knolls, and the Zaferia district. A full second story addition in Long Beach generally runs $250,000 to $450,000 before interior finishes, depending on whether your existing foundation and framing can carry the load. We’ll tell you plainly if they can’t, and what that means for the number on your written estimate.
Structural Verification Before You Commit
Long Beach sits in a seismic zone, and your existing first floor is the platform for everything above it. We bring in a structural engineer to review the foundation, shear walls, and rim joists before we quote you a number. If the engineer flags a reinforcement need, that cost goes in the written price up front. You’ll never get a surprise change order for steel brackets or foundation bolting mid-build.
Living Through the Build
A second story addition means your roof comes off and your home is exposed for a stretch. We sequence the work to minimize that window: framing and sheathing go up first, then roofing felt goes on immediately. You’ll know the schedule before demo day, including which weeks you shouldn’t plan a dinner party. The crew on your job is the same crew whose names and photos you received before we started.
Garage Addition Contractors
Garage addition contractors build attached garage space onto a home, either as a new structure or as an extension of an existing carport or single bay. In Long Beach and nearby Lakewood, where street parking gets tight in neighborhoods like Alamitos Beach and Rose Park, a garage addition does double duty: protected parking plus potential storage or workshop space. If you’re in Lakewood specifically, ask about our Home Addition Contractor in Lakewood. Sutton ADU Long Beach builds standard two-car garage additions, tandem bays for deep lots, and garage-plus-bonus-room configurations. A new attached two-car garage addition in Long Beach typically runs $65,000 to $110,000, depending on whether we’re tying into existing rooflines and running new electrical. Your written price covers it all before we break ground.
Roofline and Lot Fit
Long Beach lots come in every shape, and a garage addition has to match the house, not fight it. We check side yard setbacks, the existing eave lines, and driveway approach angles before we draw anything. The goal is a garage that looks like it was always there. If your lot has a weird taper, we’ll tell you in the first conversation what’s possible and what isn’t.
Beyond Parking
Plenty of Long Beach homeowners want garage space for more than a car. We’ve built garage additions with a workshop bay, a laundry corner, and a finished storage loft above the rafters. The structure itself is the same, but the interior rough-in changes. Tell us how you’ll actually use the space, and we’ll price it accordingly, in writing.
Bathroom Addition Contractor
A bathroom addition contractor builds a full or half bathroom in space that hasn’t had one before: a converted closet, a bumped-out wall, a garage corner, or an underused hallway alcove. Long Beach homes from the 1920s and 1930s often have one bathroom for three bedrooms, and adding a second changes how the whole household functions. Sutton ADU Long Beach does full bathroom additions with shower or tub, vanity, toilet, tile, and ventilation. A standard full bathroom addition in Long Beach generally runs $35,000 to $70,000, depending on whether we’re running new drain lines and how far they have to travel. We give you that number in writing before any demo starts.
Plumbing Reality Check
Water lines and waste lines are the biggest cost variable in a bathroom addition. If your new bathroom sits above a crawl space with accessible drains, the job is straightforward. If we have to cut a slab or re-route a main stack, that’s real money and real days. We trace your existing plumbing before quoting, so the written price reflects what’s actually under your house, not an optimistic guess.
Ventilation and Moisture Control
Long Beach’s coastal humidity means a bathroom addition without proper exhaust turns into a mold problem in a year. We spec an exhaust fan sized to the room’s cubic footage and duct it to the outside, never into the attic. The 365-Day Done Right Promise covers this work for a full calendar year after completion. If a fan fails or a vent leaks, we fix it. In writing, that’s what the Promise says.
Bedroom Addition Contractor
A bedroom addition contractor builds a new sleeping room onto your home, typically with a closet, egress window, and proper heating and cooling tie-ins. Long Beach families add bedrooms when a new baby arrives, an aging parent moves in, or a remote work setup needs a dedicated guest room. Sutton ADU Long Beach builds ground-floor bedroom additions, bumped-out primary suites, and bedroom conversions above garages. A standard ground-floor bedroom addition in Long Beach runs $60,000 to $120,000, depending on size, closet build-out, and whether we’re extending your HVAC. The number goes in writing before the first nail.
Permit and Egress Requirements
A legal bedroom in Long Beach must meet specific egress rules: minimum window opening size, sill height, and clear floor area. We pull the permits and we build to code, not to what’s fastest. If a window doesn’t meet egress, the room isn’t legally a bedroom, and that matters if you ever sell. Our written quotes include permit fees line by line.
Comfort Tie-Ins
A bedroom addition that doesn’t tie into your existing HVAC is just a sunroom with a bed in it. We run supply and return ducting from your current system when capacity allows, or we spec a mini-split if your furnace can’t handle the added square footage. Either way, you’ll know the plan and the price before the walls go up.
Brands We Service
We work with Abodu prefab ADU units, and we’ve guided Long Beach homeowners through their permitting and site work specifics. Abodu’s panelized system is popular on flat lots with easy crane access, and we know where their standard foundation specs work and where Long Beach soil conditions call for adjustments. If you’re weighing Abodu against a stick-built addition, we’ll give you an honest side-by-side on cost and timeline.
We also have hands-on experience with Plant Prefab and Tuff Shed structures. Plant Prefab’s panelized builds suit homeowners who want a high-performance envelope with less on-site framing time. Tuff Shed conversions are a different animal entirely: the shed shell is affordable, but turning it into conditioned living space means insulation, electrical, drywall, and a proper foundation, often for more than the shed itself cost. Whether you have James Hardie cladding specified, a Tuff Shed shell you want converted, or any other system in mind, we can help you sort the honest path forward.
Signs You Need a Pro Right Now
- A room addition without permits. If a previous owner added square footage without pulling permits in Long Beach, you may be sitting on uninsurable space. Inspectors can flag it during a resale, and lenders can balk. We can assess what’s there, determine if retroactive permits are possible, and quote the fix in writing.
- Your foundation shows cracks near the planned addition. Long Beach sits on expansive soil in some pockets, and existing cracks can signal movement that will compromise new work. A structural assessment before you build is cheaper than underpinning after. We arrange the engineer.
- You’re being quoted without a site visit. Any contractor who prices a home addition over the phone is guessing. Long Beach lots, soil, and existing structures vary too much for honest phone pricing. A real written price requires a real site visit, and that’s exactly what we do.
- Your household has outgrown the floor plan. When you’re arguing over the one bathroom or working from the kitchen table, the addition isn’t a luxury anymore. The sooner you get a real number, the sooner you can decide if it pencils out. Estimates are free, and the price is written.
- You don’t know who’s coming to your door. If a contractor can’t tell you the names of the people who’ll be on your property for weeks, that’s a red flag. Every Sutton ADU Long Beach technician is background-checked, identity-verified, and photo-badged. You get names and photos before arrival. Every time.
Our Process, Step by Step
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Initial call and site visit. You call (562) 317-7042. A live person answers, always. We schedule a visit to walk your lot, look at your existing structure, and talk through what you actually want the added space to do. This visit is free.
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Written plan and price. Within days of the site visit, you receive a written scope of work and a written price. This number includes labor, materials, permits, and the specific brands and finishes we discussed. If something isn’t listed, it isn’t part of the job. No change orders appear later unless you initiate them.
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Permits and engineering. We pull Long Beach city permits and arrange structural engineering when the project calls for it. Permit fees are line items in your written quote, not vague “administrative costs” tacked on at the end. You’ll see exactly what the city charges and what we do.
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Crew introduction and build. Before demo starts, you receive the names and photos of the crew assigned to your project. Every person is background-checked, identity-verified, uniformed, and photo-badged. They show ID at your door every single time. The build proceeds on the schedule we gave you, with regular check-ins from Miles Hartwell.
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Final walkthrough and the 365-Day Done Right Promise. We walk the finished addition with you, room by room. Then we hand you the written 365-Day Done Right Promise: if any workmanship defect shows up within one full calendar year, we fix it. If an element fails and we need to come back, that second visit is free. No haggling, no fee, no fine print.
How Much Does Home Addition Contractor Cost in Long Beach?
A home addition in Long Beach runs a wide range because the variables are real: foundation type, second story versus ground floor, bathroom versus bedroom, and how far new plumbing has to travel. A modest sunroom addition typically runs $45,000 to $90,000. A garage addition lands between $65,000 and $110,000. A bedroom addition runs $60,000 to $120,000. A bathroom addition runs $35,000 to $70,000. A full second story addition is the big one: $250,000 to $450,000 before finishes. Here’s what moves the number: whether we’re building on a slab or raised foundation, how far waste lines have to run, whether your existing HVAC can absorb the new square footage, and what level of finish you want inside. The way to avoid overpaying is simple: get a written price that lists every line item, every permit fee, and every brand name. If a contractor won’t put it in writing, walk away. Our free estimate includes the site visit, the measurements, the honest assessment of what your foundation and plumbing can handle, and a written price you can take to another contractor if you want. Call (562) 317-7042 to schedule yours.
Our Service Area Near Long Beach
We build home additions throughout Long Beach and the surrounding communities: Lakewood, Bellflower, Signal Hill, Hawaiian Gardens, Lomita, and the South Whittier area. We also serve homeowners in Huntington Beach and Westminster. If you’re weighing an ADU build instead of an addition, or you want to compare this against a room addition, we can talk through both paths honestly. One call, straight answers, no pressure.
Serving Long Beach, CA - Our Local Coverage Area
We’re based in the Long Beach area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions About Home Addition Contractor in Long Beach
A home addition contractor is a licensed builder who adds livable square footage to an existing home: a sunroom, a second story, a garage, a bathroom, a bedroom, or a full wing. For nearby Signal Hill projects, we also serve as a Signal Hill Home Addition Contractor. Sutton ADU Long Beach has handled all of these in Long Beach since 2006, with written pricing and a named guarantee on every project. The Threshold Standard governs who shows up: background-checked, identity-verified, photo-badged technicians whose names and photos you receive before arrival.
Most single-room additions in Long Beach take 8 to 14 weeks from permit approval to final walkthrough. A second story addition runs longer, often 4 to 6 months, because of structural work and the roof-off sequencing. Your written plan includes a schedule, and we flag any weeks where your daily routine will be most disrupted. Call (562) 317-7042 and we’ll give you a realistic timeline for your specific project.
In Long Beach, expect $35,000 to $70,000 for a bathroom addition, $60,000 to $120,000 for a bedroom addition, $45,000 to $90,000 for a sunroom, $65,000 to $110,000 for a garage addition, and $250,000 to $450,000 for a full second story. The exact number depends on foundation type, plumbing distances, HVAC tie-ins, and finish level. Your written estimate breaks all of this down line by line, so there’s no guesswork. Free estimates, always.
Yes. We have hands-on experience with Abodu and Plant Prefab panelized builds, plus Tuff Shed conversions and James Hardie cladding systems. If you’re trying to decide between a prefab ADU and a stick-built addition, we’ll give you an honest comparison of cost, timeline, and what your Long Beach lot can actually support. The guidance is free, and there’s no obligation.
A live person answers every call at (562) 317-7042, 24 hours a day, 7 days a week. No voicemail trees, no callback queues. If you have a question about your build at 9 p.m. or need to talk through a concern on a Saturday, a real human picks up. That’s part of the Threshold Standard.
The 365-Day Done Right Promise covers defects in workmanship for one full calendar year from project completion. If something we built isn’t right, we make it right. If an element fails and we need to return, that second visit is free. The Promise is written, stamped on your project documents, and signed. It is not a verbal assurance.
Start by getting clear on how you’ll actually use the new space, then call us for a free site visit. We’ll walk your lot, check your foundation and rooflines, and give you a written price. Before demo begins, you’ll receive the names and photos of your crew. There’s nothing to prep beyond knowing what you want the space to do. We handle the rest, in writing, from day one.
Schedule Your Home Addition Contractor Service in Long Beach Today
You deserve a written price and a crew you can name, not a vague estimate and a group of strangers at your door. Call (562) 317-7042 to schedule your free home addition estimate in Long Beach. A live person answers, every time, 24/7. You’ll get straight answers on cost, a realistic timeline, and the 365-Day Done Right Promise in writing. No pressure, no obligation, just a real number and a real plan.
Written by Miles Hartwell, Owner at Sutton ADU Long Beach, serving Long Beach since 2006.
