A Seedling company - serving Long Beach, CA
A new rear addition with a vaulted beamed ceiling and tall windows
Home Addition Contractor · West Athens, CA

Home Addition Contractor in West Athens - Design, Permits and Build Under One Contract

We handle the design, the engineering, and the city permit, then build it. One contract, one crew, one accountable point of contact. Free feasibility check on your lot before you commit.

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A second-story addition that matches the existing roofline
A second-story addition with a balcony, matched to the original house
A former garage converted into a guest house
The living room inside a new ADU
A bedroom and desk inside a converted garage
A new two-story ADU over a garage
An attached garage converted into living space
A compact kitchen inside a new ADU
Every project starts with

A free site visit, a check of what your lot allows and a written, line-item price.

Get your free estimate

Fast, Reliable Home Addition Contractor in West Athens

Home addition costs in West Athens typically run $180 – $450 per square foot depending on whether you’re bumping out a bathroom or adding a full second story, and most projects here hit one specific snag: the County’s septic-to-sewer mandate that can add $30k – $40k before framing begins. We’re Seedling ADU Long Beach, and our crews work West Athens streets every week, from the bungalow blocks off Normandie Avenue to the deeper lots near Imperial Highway. If you’re planning a room addition, garage addition, or bathroom addition in West Athens, call (562) 362-4592 for a written price before any work starts.

Contractor building a wood-framed home addition in a backyard in West Athens, CA

Call (562) 362-4592

Why Seedling ADU Long Beach Is West Athens’s Preferred Home Addition Contractor

A single-story rear room addition with tall windows and a new patio

West Athens homeowners keep calling us back because we show up with a plan that already accounts for the two things this unincorporated pocket throws at every project: zero lot-line setbacks and mandatory sewer hookups. Our Home Addition Contractor team walks each West Athens property before quoting, checking the sewer lateral path, measuring the actual setback from the neighbor’s wall, and flagging marine-layer corrosion risks on any existing structure we’ll tie into. That walk-through is why our written prices hold.

We’re led by Ben Ortega, who insists every West Athens estimate includes the County’s sewer conversion trigger, not as a footnote but as a line item. Families here tell us the same thing: other contractors quoted the addition, then “discovered” the sewer issue after demo started. We’d rather tell you on day one. Every job is backed by the 365-Day Done Right Promise in writing, and every crew member is background-checked and uniformed. Shoe covers and drop cloths go down before tools come out, and you get a photo of the clean-up before we leave.

Garage Addition Contractors in West Athens

Garage Addition Contractors working in West Athens face a specific headache that contractors in Gardena or Athens proper don’t: the old clay sewer laterals that run diagonally across these 1920s and 1930s lots often sit exactly where your garage addition wants to go. A garage addition in West Athens typically runs $60,000 – $110,000, and if the County requires a septic-to-sewer conversion triggered by the new square footage, that number climbs by roughly a third before framing starts.

Attached Garage Additions on Tight West Athens Lots

Most West Athens homes sit on 5,000 – 7,000 square foot lots with detached garages set back from the house. When you want an attached garage addition, the zero lot-line setback on one side usually forces the design into a narrower footprint or a cantilevered edge beam. We’ve done this on Normandie Avenue, and we spec the footing design around the setback from the first drawing, not after the inspector shows up.

Garage Conversion vs. Garage Addition

If your existing detached garage has a raised foundation and good bones, a conversion usually costs $50,000 – $85,000 and skips the setback problem entirely. If you need more square footage than the old garage allows, a garage addition priced at the top of that range gives you a new footprint, new roof, and new slab designed for the County’s sewer line path.

Bathroom Addition Contractor in West Athens

A Bathroom Addition Contractor in West Athens is usually working inside an existing bungalow footprint, which means the County’s sewer mandate matters less than the condition of the old cast-iron drain lines under the floor. A bathroom addition in West Athens typically runs $25,000 – $55,000, with the low end covering a compact 40 – 60 square foot bath and the high end covering a full primary suite bath with separate tub and shower.

Bathroom Additions That Don’t Disturb the Rest of the House

When we add a bathroom off a hallway or primary bedroom in a West Athens home, we tent off the work area, run exhaust to the exterior through the existing roof line, and use quiet tools during school hours and nap times. You’ll know the crew’s names, and they’ll know not to leave the back door open when your dog is loose.

Coastal-Spec Hardware for West Athens Bathrooms

Even a bathroom on an inland West Athens street gets marine-layer air most mornings. We install stainless steel supply stops and corrosion-resistant shower fixtures rather than the chrome-plated brass that pits within a few years here. It’s a small upgrade in material cost and it keeps your addition looking new past the warranty period.

Contractor installing roof trusses on a residential home addition project in West Athens, CA

Pricing for Home Addition Contractor in West Athens, CA

A room addition in West Athens runs $80,000 – $160,000. A second story addition runs $150,000 – $350,000. A sunroom addition runs $45,000 – $85,000. A bump-out addition for a kitchen or living room expansion runs $35,000 – $75,000. Those ranges include the written line-item price we give you before any work starts, and they reflect what we see on West Athens lots with their specific setback, sewer, and foundation realities. If your lot triggers the County’s septic-to-sewer conversion, we’ll tell you the exact dollar amount in the estimate, not after demo. Call (562) 362-4592 for a free estimate on your West Athens addition.

Common Home Addition Contractor Problems We See in West Athens Homes

  • Zinc-plated fasteners on eaves and railings corroding within five years. The marine layer that rolls over West Athens every morning carries salt air further inland than people expect. We specify stainless or hot-dip galvanized hardware on every exposed connection.
  • Diagonal clay sewer laterals under the planned addition. On a 1920s stucco bungalow off Normandie Avenue, our crew found the original clay lateral running diagonally under the planned master suite addition. We replaced it per County mandate before framing, adding $38k and shifting the footing design to a cantilevered edge beam to respect the zero lot-line setback on the east side.
  • Zero lot-line setbacks triggering stop-work orders. West Athens has nonconforming setbacks on many of its 1920s – 1950s bungalows. Contractors who pour footings first and check the County’s setback rules second end up with stop-work orders and a redesign bill.
  • Raised foundations that shift with summer heat. These old wood-frame homes sit on raised foundations that dry out and move during West Athens’s hot, dry summers. We tie new additions to the existing foundation with steel connectors and account for that movement before we frame.

Trusted Brands We Work With in West Athens

Seedling ADU Long Beach gives West Athens homeowners hands-on access to the brands serious buyers research: Abodu, Cover, and Dvele for prefab and modular additions, and James Hardie siding and trim for the exterior cladding that has to stand up to salt air and sun. We don’t steer you toward whatever we prefer to sell. We show you what fits your lot, your setback, and your budget, and we stock the hardware and materials West Athens projects actually need.

We Also Serve Cities Near West Athens

Our crews serve West Athens every week and cover the surrounding areas too. If you’re planning a home addition in Long Beach, Garden Grove, Carson, or Norwalk, we bring the same written pricing and the same care promise. Looking for a contractor who knows this corner of LA County? West Athens is where we spend a lot of our time.

Serving West Athens, CA - Our Local Coverage Area

We’re based in the West Athens 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 West Athens

Contact Seedling ADU Long Beach for Your West Athens Home Addition

A new sunroom addition with three walls of windows

Planning a home addition in West Athens? Call (562) 362-4592 for a free, written estimate. We’ll walk your lot, check the sewer lateral path, measure your setbacks, and give you a price before any work starts. No surprise line items after the crew arrives.

Written by Ben Ortega, Owner at Seedling ADU Long Beach, serving West Athens.

Why West Athens Chooses Seedling ADU Long Beach

We set the standard for home addition contractor in West Athens.

No Change-Order Surprises

The written quote you sign is the price you pay. Anything we find mid-job gets priced and approved by you in writing before we touch it.

Licensed & Insured

Fully certified technicians who meet all local and state licensing requirements.

Upfront Pricing

No hidden fees, no surprises. You approve the price before any work begins.

Guaranteed Work

Every repair and installation is backed by our workmanship warranty and satisfaction guarantee.

How It Works in West Athens

Getting your home addition contractor handled is simple and fast.

1

Call or Request a Free Estimate

Tell us about your home addition contractor needs and we provide an upfront, transparent quote - no obligation, no hidden fees.

2

Licensed Technician Dispatched

A background-checked, certified technician arrives in West Athens - typically within 30-60 minutes, with parts stocked on the truck.

3

Problem Solved, Guaranteed

We complete the job to your full satisfaction, backed by our warranty and 100% satisfaction guarantee.

What happens when you call

  1. 1
    A real person answersNo phone trees - talk to a local home addition contractor pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
  3. 3
    We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
  4. 4
    You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.

What West Athens Customers Say

Trusted by homeowners across West Athens and surrounding areas.

★★★★★

"Junior ADU conversion inside the house. They were incredibly clean about it, plastic walls, floor protection, daily cleanup, all with a toddler in the home. Couldn't have asked for more care."

Marcus Oyelaran · Verified customer
★★★★★

"Quality ADU. Communication was good overall, with one quiet stretch during the inspection wait where I had to check in. Once moving again they were tidy and quick to finish."

Noelle Friedman · Verified customer
★★★★★

"Careful builders who treated our home like we still had to live in it, because we did. Dust controlled, driveway swept nightly, and the finished ADU is beautiful. No surprise costs either."

Rick Abara · Verified customer

Small homes that live large

Vaulted ceilings, compact kitchens and private decks: the details that make an ADU feel like a home.

Read our ADU guides
The bathroom inside a new ADUA small deck outside a new ADUA kitchenette inside a converted garageA new modern ADU with wood claddingA new bathroom inside a converted garageThe bedroom inside a new ADU

More ADU services in West Athens

Every build below starts the same way: a free site visit and a written price.

Getting started with Seedling in Long Beach

Every project starts with a conversation and a written price. Here is how to take the first step.

A project lead measuring a backyard ADU site with the homeowner

Free site visit

A project lead walks the lot with you, checks what it allows and hands you a written, line-item price. No obligation.

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A building crew carrying lumber to a backyard ADU site

Your Long Beach team

A local crew that works across Long Beach and the towns around it, to the same written standard as every Seedling location.

Areas we serve
A worker protecting the lawn before an ADU build starts

Read our written promise

What we promise on every job, written down, with the terms spelled out before any work starts.

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(562) 362-4592

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