A Benson company - serving Long Beach, CA
A quiet residential street with a new ADU behind one of the homes
Long Beach, CA

ADU Company in Long Beach - 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.

✓ Licensed & Insured ✓ Written quotes ✓ Permits handled
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Free Estimate on SiteCalls Answered by a Live Person, 24/7Background-Checked TechniciansA Local Team in Long Beach
🛡 Licensed & Insured 📝 Written Fixed-Price Quotes 💲 No Change Orders · Free Estimates
A new two-story ADU over a garage
A compact kitchen inside a new ADU
A new modern ADU with wood cladding
The bedroom inside a new ADU
The bathroom inside a new ADU
A second-story addition that matches the existing roofline
A second-story addition with a balcony, matched to the original house
A single-story rear room addition with tall windows and a new patio
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

ADU Company in Long Beach, CA

An ADU in Long Beach usually costs between $180,000 and $420,000 depending on whether you convert a garage, build over it, or pour a completely new foundation. The typical project takes four to seven months from the first plan to final inspection. Most of that time is spent on design, permits, and the utility work that older neighborhoods here require. Call (562) 362-3885 and we’ll put a written price in front of you before anything gets signed.

Call (562) 362-3885

Why Long Beach Homes Are Different

A small deck outside a new ADU

Long Beach’s dense single-family neighborhoods were mostly built before 1940. You’ll see 1920s bungalows in Rose Park, Spanish Revival stuccos throughout Bluff Heights, and a solid run of 1950s and 60s ranch homes in the eastside tracts around Los Altos and El Dorado Park. Those houses sit on lots that are often only 25 to 40 feet wide, with detached garages pushed to the rear alley. That shape changes the ADU conversation immediately.

Long, narrow lots mean side-yard setbacks get tight fast. A lot of the ADUs we plan in Long Beach end up as garage conversions or two-story units over a new garage, because that layout preserves the driveway and stays clear of the side property lines. In historic districts like Bluff Park or Carroll Park, the city’s design review layer can limit what’s visible from the street, which pushes more projects toward alley-facing units or conversions that keep the original facade untouched.

The housing stock also affects foundations and utilities. Older homes here sit on a mix of raised wood floors and slab, and tying a new ADU’s sewer line to the main often means trenching through a long, narrow yard. We plan for that from the first site visit, not after the hole is open.

Our Main Long Beach Services

Most homeowners in Long Beach start with one of three jobs. Each has its own dedicated page with pricing, timelines, and what to expect in Long Beach specifically.

ADU Builders in Long Beach

A detached ADU in a Long Beach backyard is usually a 400 to 800 square foot unit with its own kitchen, bath, and entrance. The city’s older neighborhoods and historic districts favor compact, alley-facing designs, and many homeowners choose prefab systems from brands like Abodu or Plant Prefab to reduce on-site construction time. We handle the foundation, utility connections, and all permits, with the written price locked before work begins. See the full breakdown on our ADU Builders in Long Beach page.

ADU Builders in Long Beach

Home Addition Contractor in Long Beach

A home addition in Long Beach means adding square footage to the main house itself, and that gets complicated on lots under 40 feet wide. Most additions here push out the back rather than the side, which often means reworking the existing roofline and foundation connection. The age of the home matters: a 1920s bungalow has different framing than a 1960s ranch, and we plan the structural work accordingly. See Home Addition Contractor in Long Beach for details and pricing.

Home Addition Contractor in Long Beach

Room Addition Contractor in Long Beach

A room addition is a single space added to the house, like a primary bedroom, a family room, or a home office. On Long Beach’s narrow lots, this often becomes a rear bump-out that keeps the existing footprint’s street view intact. Coastal air and the marine layer mean we pay close attention to moisture barriers and ventilation on every exterior wall we open. Full scope and numbers are on the Room Addition Contractor in Long Beach page.

Room Addition Contractor in Long Beach
Need help today?Fast, friendly service and a no-obligation free estimate.

Call (562) 362-3885

What happens when you call

  1. 1
    A real person answersNo phone trees - you reach a local pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched.
  3. 3
    A background-checked tech heads outLicensed & insured, dispatched right away.
  4. 4
    You approve before work beginsNothing starts until you say go.

Brands We Service in Long Beach

We build with and source from leading prefab and materials brands, including Abodu, Tuff Shed, and James Hardie cladding. Homeowners can research each brand independently before ever sitting down with us. We stock commonly needed parts locally and order everything else with verified lead times before quoting. See our brands for the full list.

Pricing for ADU Company in Long Beach, CA

Service Typical range in Long Beach
Studio ADU / garage conversion $180,000 – $280,000
One-bedroom detached ADU $220,000 – $350,000
Two-bedroom detached ADU $300,000 – $420,000
Two-story ADU over new garage $320,000 – $450,000
JADU (interior conversion) $90,000 – $160,000
Primary suite addition $140,000 – $220,000
Family room addition $120,000 – $200,000
Kitchen extension / bump-out $110,000 – $190,000
Garage conversion (habitable) $130,000 – $200,000
Prefab ADU (turnkey, incl. site work) $250,000 – $400,000

Tight lot coverage limits and sewer-line trenching through long yards are the two biggest price movers in Long Beach. Whatever the job costs, the number is written down before we start, and that’s the number on the final invoice. No change orders hiding in the middle of the project.

Neighborhoods We Serve in Long Beach

The living room inside a new ADU

We work across all of Long Beach, from the historic districts near downtown to the eastside tracts and up through North Long Beach.

  • Bluff Heights
  • Rose Park
  • Belmont Heights
  • Cambodia Town
  • El Dorado Park

Typical response time for a site visit in Long Beach is one to three business days, depending on where you are in the city.

Service Area – Cities Near Long Beach

We also serve homeowners in the cities bordering Long Beach. If you’re just over the line in Signal Hill, CA, Seal Beach, CA, Lakewood, CA, or Artesia, CA, the same written-price guarantee and local crews apply.

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.

FAQs About ADU Company in Long Beach

A new sunroom addition with three walls of windows

Ready to get started? Free estimates · Free written quotes response in Long Beach
Call (562) 362-3885

What happens when you call

  1. 1
    A real person answersNo phone trees - talk to a local adu 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 Long Beach Customers Say

★★★★★ 5.0 from 5+ reviews

"Clean, quiet crew. They respected the neighbors, kept noise to working hours, and swept the driveway every evening."

- Hope C.

"Booked a consult online and met the project manager two days later. Weekly progress updates arrived by text with photos. ADU finished on schedule."

- Hannah W.

"Plumbing and electrical passed on the first inspection."

- Alan B.

How It Works in Long Beach

Getting your adu handled is simple and fast.

1

Call or Request a Free Estimate

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

2

Licensed Technician Dispatched

A background-checked, certified technician arrives in Long Beach - 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.

More ADU services in Long Beach

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

Getting started with Benson 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.

Book a site visit
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 Benson 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.

Our promise

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Tell us what's going on in Long Beach - we'll get back to you fast. No obligation.

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