ADU Company in Long Beach, CA
An ADU, or accessory dwelling unit, is a small house on a larger property. Long Beach is full of lots that were practically built for one. The city’s 1910s – 1940s California bungalows sit on gridded streets with rear alleys, and those old detached single-car garages are exactly the right size for a garage-conversion ADU. What makes Long Beach genuinely different from Lakewood or Signal Hill is the Coastal Zone: a large share of Belmont Shore, Naples Island, Bluff Park, and Alamitos Beach requires a Coastal Development Permit before an ADU permit even moves. That changes timelines, budgets, and which contractor you should call. Reach us at (254) 602-5618.
Key Takeaways
- Long Beach ADU projects in the Coastal Zone take longer and cost more than inland projects due to dual permitting.
- The city’s pre-war garage stock is the main ADU conversion target, but most garages are 200 – 240 sq ft and need foundation and electrical upgrades.
- Our written price is set before work begins, and every project carries the 365-Day Done Right Promise in writing.
- A live person answers our phone 24/7, not a voicemail loop.
Why Long Beach Homes Are Different
Long Beach is not one housing market. It is several stacked on top of each other. The pre-war bungalows in Rose Park, Wrigley, and California Heights share a rear-alley grid that makes detached garage conversions unusually attractive: the new ADU can take its own postal address off the alley, which means genuine privacy, independent access, and stronger rental appeal than a front-facing unit. But there is a catch. If the alley dedication status is not confirmed with the city’s Public Works department before the new entry door is framed, the project can hit a stop-work order. That is a scheduling risk no one wants to absorb mid-build.
The coastal marine layer adds a second layer of complication. Salt-laden air in Belmont Shore and the beachside neighborhoods accelerates corrosion on exposed fasteners, galvanized connectors, and HVAC equipment far more than it does even a few miles inland in Lakewood or Carson. A detached ADU built a block from the beach needs different material specs than one built north of the 405. Skip that, and the rust shows up inside the guarantee period. We would rather spec it right the first time.
And then there is the permit stack. Coastal Zone properties need a Coastal Development Permit on top of the standard ADU building permit. Add months to the timeline. Add fees. Change what gets approved. A contractor who has never navigated Long Beach’s dual-permitting process will learn on your lot, on your schedule, at your expense.
Our Main Long Beach Services
Long Beach homeowners most often call us about three things: adding square footage to the main house, converting a detached garage into a rentable unit, and building a standalone ADU from scratch. Each has its own Long Beach page with pricing and detail.
Home Addition Contractor in Long Beach
A room addition on a 1920s Long Beach bungalow means working around existing footings, knob-and-tube wiring, and often a foundation that has settled unevenly over a century of coastal soil. Bump-outs and second-story additions in neighborhoods like Bluff Park also have to clear Coastal Zone review if they add square footage to a property inside the zone. The work is doable, but only when the contractor knows which inspections Long Beach actually enforces. Home Addition Contractor in Long Beach
Garage Conversion Contractor in Long Beach
Most pre-war Long Beach garages are detached, one-car structures running 200 to 240 square feet. That is often just under the line for a comfortable one-bedroom ADU, which means a typical garage conversion in Long Beach includes a small bump-out to meet California’s habitable-space minimums, a foundation upgrade, and a full electrical panel swap. Alley-facing garages give the new unit real independence, but only after alley dedication is confirmed with Public Works. Garage Conversion Contractor in Long Beach
ADU Builders in Long Beach
Detached ADUs in Long Beach fall into two buckets: site-built and prefab. Prefab units from brands like Abodu and Dvele can cut on-site time significantly, which matters when the Coastal Zone permit already burned four months of homeowner patience. But prefab only works on lots where the crane or truck can actually reach the rear yard, and some Long Beach lots with tight alley access rule that out fast. We match the build method to the lot, not the other way around. ADU Builders in Long Beach
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 work hands-on with Abodu, Cover, and Dvele prefab ADUs, plus James Hardie siding for site-built and garage-conversion projects in Long Beach. Parts and material lead times are handled out of our scheduling office so the build does not stall waiting on a panel delivery. See our brands for the full list.
Pricing for ADU Company in Long Beach, CA
| Service | Typical range in Long Beach |
|---|---|
| Garage conversion to ADU (200 – 240 sq ft, foundation + electrical upgrades) | $85,000 – $140,000 |
| Detached prefab ADU (Abodu, Cover, or Dvele, site-ready) | $150,000 – $260,000 |
| Site-built detached ADU (1-bedroom, ~400 sq ft) | $180,000 – $320,000 |
| JADU (junior ADU inside existing home footprint, 500 sq ft max) | $60,000 – $110,000 |
| Home addition (ground-floor bump-out, 200 – 400 sq ft) | $90,000 – $180,000 |
| Second-story addition (400 – 800 sq ft, structural engineering included) | $200,000 – $400,000 |
| Full electrical panel replacement (100A to 200A) | $3,500 – $6,500 |
| Foundation upgrade for detached garage conversion | $8,000 – $18,000 |
| Kitchen addition (150 – 300 sq ft, no structural) | $70,000 – $130,000 |
| Primary suite addition (250 – 400 sq ft, with bath) | $120,000 – $220,000 |
Coastal Zone projects in Belmont Shore, Naples Island, and Bluff Park push the top of these ranges up because the Coastal Development Permit adds review time, consultant fees, and design revisions. The written price we give before work starts is the price, full stop. No change orders at the door, no surprise add-ons.
Neighborhoods We Serve in Long Beach
Our crews work across the Long Beach area, from the beach to the 91. Coastal jobs run differently than inland jobs, and we schedule accordingly.
- Belmont Shore
- Naples Island
- Bluff Park
- Rose Park
- Wrigley
- California Heights
Most Long Beach neighborhoods are reachable within a standard service window, though Coastal Zone properties usually require an additional site visit before the permit package is assembled.
Service Area – Cities Near Long Beach
We serve Long Beach and the surrounding communities, including Signal Hill, CA, Carson, CA, Seal Beach, CA, and Lakewood, CA. Scheduling and dispatch are coordinated from our Los Angeles office, with crews working locally in Long Beach. Call (254) 602-5618 to confirm your address is in the service area.
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
Inland Long Beach ADU permits typically clear in 4 – 7 months; Coastal Zone projects in Belmont Shore, Naples Island, Bluff Park, or Alamitos Beach add another 3 – 6 months for the Coastal Development Permit. That is why starting with a contractor who knows the Coastal Zone process matters. Call for a realistic timeline on your specific lot.
If your property falls inside the California Coastal Zone, yes, on top of the standard ADU building permit. A significant share of Belmont Shore, Naples Island, Bluff Park, and Alamitos Beach is inside the zone. We confirm Coastal Zone status for your parcel before any design work begins, so no one surprises you later.
Often, yes. The rear-alley grid in Rose Park, Wrigley, and California Heights generally lets a detached garage conversion take a separate postal address off the alley, which means independent access and better rental appeal. But the city’s Public Works department must confirm alley dedication status before the entry door is framed. We handle that as part of the permit package.
Ready to Talk About Your Long Beach ADU?
The best first step is a free estimate with a written price. No commitment, no open-ended bid. We will look at your lot, confirm Coastal Zone status if it applies, and give you a real number you can hold. Call (254) 602-5618 to schedule yours.
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
"I was nervous about adding on but they walked me through every step and every cost before we started. No surprise change orders halfway through like I'd heard horror stories about."
- Eleanor Pratt"Junior ADU conversion inside the house. They protected the rest of our place with plastic and daily cleanup. Done nearly on schedule and on the number they quoted."
- Sabrina Veld"Garage conversion into an office and guest room. Fair written price, finished close to on schedule, and they fixed a small drywall crack under warranty months later without any hassle."
- Diana Cho