A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Long Beach, CA
Adding an ADU in Long Beach usually costs between $95,000 and $420,000 depending on whether you convert an existing garage or build new from the ground up. The price difference comes down to site conditions, foundation work, and the city’s retrofit requirements on older structures. Long Beach’s mix of 1920s Craftsman bungalows, 1950s tract ranchers, and dense coastal apartment buildings means almost no two jobs look alike. We’re the ADU company that puts the full price in writing before any work starts, and every finished project carries our 365-Day Done Right Promise. Call (562) 362-4592 to talk through your lot.
Why Long Beach Homes Are Different
Long Beach’s housing stock spans a century, and that age shows up in ways that shape ADU work. In Alamitos Beach and Belmont Shore, many pre-1978 detached garages sit on unreinforced masonry or soft-story construction. The state now requires seismic evaluation and often retrofitting before a garage conversion can be permitted. Wrigley is a different story: homes there were platted in the 1920s with alley-loaded garages, so a long, narrow detached garage can become a rear ADU with its own street address and no driveway cut across the front yard. That’s a pattern specific to Long Beach’s older alleys, and it changes both the design and the permit path.
The marine air matters too. Salt spray off the water accelerates corrosion on metal flashing, fasteners, and exterior hardware, so we specify corrosion-resistant materials on Long Beach ADUs that inland builders don’t always think about. Mild coastal temperatures mean smaller heating and cooling systems, but humidity needs real ventilation planning in a detached unit. Homes in neighborhoods like Lakewood Village or Los Altos, built in the 1950s and 60s, often have slab foundations that are straightforward to tie into, while the beach-adjacent older homes need more care. Flat lots help in most of the city, though some hillside pockets near Signal Hill add grading and drainage work. Ben Ortega, who leads our Long Beach work, reviews site conditions with every family before numbers go in writing.
Our Main Long Beach Services
Long Beach homeowners most often call us for two things: converting an existing garage into a livable unit, and building a detached ADU from the ground up. Home additions are the third path for families who need more room attached to the main house. Each service has its own Long Beach page with specific pricing and process details.
Home Addition Contractor in Long Beach
A home addition in Long Beach usually means expanding a kitchen, adding a primary suite, or building out a family room that opens to the backyard. Older homes here often need foundation assessment before the addition ties in, especially in neighborhoods with original pier-and-beam construction. We handle the permit set, the structural work, and the interior finish as one contract with one written price. Marine air exposure shapes our choice of siding and flashing, same as it does on our ADU work. The crew sets shoe covers and drop cloths inside the house every day, because the family stays home during this kind of project. See what’s involved and what it costs on our Home Addition Contractor in Long Beach page.
Garage Conversion Contractor in Long Beach
Most Long Beach garage conversions start with a seismic evaluation, especially in Alamitos Beach, Belmont Shore, and other pre-1978 neighborhoods where soft-story garages are common. The retrofit adds cost, but it is not optional: the city requires it before the conversion permit is issued. In Wrigley, alley-loaded garages convert cleanly into rear units with separate entrances. We build the living space, upgrade the electrical and plumbing, and finish with the same materials and care we use on new construction. The full price comes in writing before demolition day, with no change orders added mid-project. Details on this process are on the Garage Conversion Contractor in Long Beach page.
ADU Builders in Long Beach
Detached ADUs on Long Beach lots work differently depending on the neighborhood. In the flat ranch-home districts, a backyard unit goes up on a straightforward slab or small foundation. Nearer the coast, drainage, salt-air material selection, and sometimes soil condition influence the design. We work with prefab brands like Abodu and Plant Prefab for families who want a faster path from permit to move-in, and we also build custom stick-framed units with James Hardie siding for a more tailored look. Every ADU we build carries the 365-Day Done Right Promise, in writing. The full overview of models, timelines, and price ranges is on our ADU Builders in Long Beach page.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Long Beach
We install and finish prefab ADU systems from Abodu and Plant Prefab, and we work with Tuff Shed structures for detached studios and home offices. James Hardie siding and trim round out the exterior packages we use most often on Long Beach properties. For the full list of partners and materials we support, see our brands.
Pricing for ADU Company in Long Beach, CA
Here’s what Long Beach families can expect, based on the work we do most often. Every figure below is a planning range, not a quote, until we’ve seen your lot.
| Service | Typical range in Long Beach |
|---|---|
| Full custom ADU (ground-up) | $185,000 – $420,000 |
| Prefab modular ADU (Abodu, Plant Prefab) | $150,000 – $275,000 |
| Tuff Shed conversion into studio ADU | $95,000 – $165,000 |
| Garage conversion (unreinforced masonry retrofit included) | $110,000 – $210,000 |
| Garage conversion (standard wood frame) | $95,000 – $170,000 |
| Detached garage build + ADU conversion above | $180,000 – $320,000 |
| Home addition (single room, kitchen expansion, or suite) | $130,000 – $260,000 |
| Alley-loaded garage conversion in Wrigley | $120,000 – $210,000 |
In Long Beach, seismic retrofitting is the biggest single price driver on garage conversions in the older coastal neighborhoods. A second cost variable is foundation condition on 1920s and 1930s homes. Whatever your lot requires, the number you get before work starts is the number you pay, because every project receives a written price and no surprise line items after the crew arrives.
Neighborhoods We Serve in Long Beach
We work across Long Beach, from the coast to the inland neighborhoods. Most of our Long Beach visits land within one to two weeks of the first call, depending on the current build schedule and what you need.
- Alamitos Beach
- Belmont Shore
- Wrigley
- Los Altos
- Lakewood Village
Service Area – Cities Near Long Beach
Our crews also reach Signal Hill, CA, Carson, CA, Lakewood, CA, and Cypress, CA with the same written-pricing promise and the same 365-Day Done Right Promise. Dispatch and scheduling are coordinated from the brand’s Los Angeles office, but the crews on your Long Beach job live and work locally.
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
Plan for 3 to 6 months for permit approval on a typical Long Beach ADU, with seismic review adding time in older coastal neighborhoods. Prefab models using Abodu or Plant Prefab sometimes clear faster because the plans are pre-approved. We handle the permit set for you. Call (562) 362-4592 to get a realistic timeline for your specific lot.
Yes, for pre-1978 garages with unreinforced masonry or soft-story conditions, which are common in Alamitos Beach and Belmont Shore. The retrofit is part of the permit path, not an add-on you can skip. Our written price includes any required retrofit once the evaluation is done. Call (562) 362-4592 and we’ll walk you through what your garage likely needs.
Yes, and it is one of the most common scenarios we see, especially in Wrigley where alley-loaded garages turn into rear units with their own addresses. Setback rules and lot coverage limits shape the design, but narrow lots almost always have a workable footprint. Call (562) 362-4592 for a free estimate on your specific lot size.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Long Beach Customers Say
"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"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"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
