A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Lakewood, CA
Adding an ADU in Lakewood usually costs between $175,000 and $295,000 when built ground-up, and a garage conversion runs $90,000 to $145,000. Lakewood’s housing stock, most of it one-story ranch and bungalow homes built between 1942 and 1960, sits on 5,000 to 7,000 square foot lots with generous setbacks that make detached ADUs unusually practical here. We coordinate scheduling and dispatch from the Seedling ADU Long Beach office, and our crews serve Lakewood locally. Call us at (562) 362-4592 to talk through what fits on your lot.
Why Lakewood Homes Are Different
Lakewood was built as a planned post-war suburb, and that history still shapes every ADU project here. The original homes are predominantly one-story, wood-frame ranches with long driveways and detached garages, many of them accessed through alleys. That layout matters because it usually means the rear yard stays open and buildable, and a detached garage can convert into living space without giving up driveway parking. We also see a lot of lots where the side setback is wider than you would expect on a newer tract home, which gives us room to place a detached ADU without crowding the main house or the neighbor’s fence line.
The climate is mild coastal Mediterranean: warm, dry summers and cool, wet winters. For construction, that means we focus on moisture management at the foundation and roof, and we think about wildfire smoke resilience in window sealing and ventilation choices rather than extreme temperature swings. Homes from the 1940s and 1950s often have original plumbing and electrical that predate today’s load requirements, so a converted garage or new ADU usually includes a service panel review and, on many Lakewood jobs, a panel upgrade before framing starts. That’s part of the written price we give you before any work begins, not a change order discovered mid-project.
Our Main Lakewood Services
Most Lakewood homeowners call us about one of three projects, and each has its own dedicated page with pricing, timelines, and FAQ specific to that job.
Home Addition Contractor in Lakewood
A home addition on a 1950s Lakewood ranch usually means extending into the rear yard while keeping the existing roofline intact or stepping it down cleanly. We handle foundation matching, wall and ceiling finish continuity, and the electrical panel and HVAC adjustments that older homes need when square footage increases. Because many Lakewood lots have ample rear yard space, additions here rarely force us to compromise on setbacks, but we always verify the city’s current zoning before we draw anything. Read more about the process and pricing on our Home Addition Contractor in Lakewood page.
Garage Conversion Contractor in Lakewood
Lakewood’s alley-loaded detached garages are among the best conversion candidates in the region. The structure exists, the footprint works, and converting it preserves the driveway and front curb parking. We check the slab for moisture intrusion and cracks, verify the roof framing can carry ceiling insulation, and run new electrical, plumbing, and insulation to current code. On most Lakewood garage conversions we also add sound separation between the new unit and the main house, which matters on smaller lots. See pricing and what to expect on the Garage Conversion Contractor in Lakewood page.
ADU Builders in Lakewood
Lakewood’s 5,000 to 7,000 square foot lots with wide setbacks are what make detached ADUs work so well here. A rear-yard detached ADU keeps construction mostly outside the existing home, which means your family stays in the house with less disruption, and the finished unit becomes a separate address on the same lot. We cover site preparation, foundation, utility runs, and finish work, and we work with prefab brands including Plant Prefab and Abodu when the timeline or lot access favors off-site construction. Start with the ADU Builders in Lakewood page for full pricing and phase-by-phase details.
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 Lakewood
We install and finish ADUs from Plant Prefab and Abodu for Lakewood homeowners who want prefab precision, and we specify James Hardie siding and Tuff Shed structures where they fit the design. Parts and materials for these brands are ordered directly, so we can give you an honest lead time during the estimate rather than guessing later. Visit our brands page to compare what each one offers.
Pricing for ADU Company in Lakewood, CA
| Service | Typical range in Lakewood |
|---|---|
| Detached ADU (ground-up build) | $175,000 – $295,000 |
| Garage conversion to ADU | $90,000 – $145,000 |
| Home addition (primary residence) | $130,000 – $240,000 |
| Prefab ADU (Plant Prefab or Abodu, installed) | $180,000 – $310,000 |
| Foundation and site work (for ADU on virgin soil) | $22,000 – $48,000 |
| Utility trenching and hookups (water, sewer, electric) | $8,000 – $18,000 |
| Panel upgrade (when existing service is undersized) | $3,500 – $6,500 |
| Plumbing rough-in and fixtures for a new ADU | $15,000 – $32,000 |
| Electrical rough-in and fixtures for a new ADU | $12,000 – $25,000 |
| Insulation and drywall (full ADU) | $9,000 – $19,000 |
| Roofing for a detached ADU | $10,000 – $22,000 |
| James Hardie siding (materials and install, ADU exterior) | $11,000 – $24,000 |
Prices in Lakewood rise when a 1940s or 1950s home needs a panel upgrade, sewer line replacement, or foundation correction before framing can start. Every Seedling project gets a written price before any work begins, and that number includes the site conditions we already know about, not a best-case guess.
Neighborhoods We Serve in Lakewood
We work across the residential neighborhoods that make up Lakewood, including the tracts north and south of Del Amo Boulevard and the pockets east of Lakewood Boulevard where alley-loaded garages are common. Most of our crew members live within a short drive of the city, so we schedule estimates and site visits within a few business days of your call.
- Mayfair
- Lakewood Park
- Lakewood Village
- East Lakewood
- Imperial Estates area
Service Area – Cities Near Lakewood
Our crews cover Lakewood and the surrounding cities along the 605 and 91 corridors. If you are just outside Lakewood, we also serve Carson, CA, Long Beach, CA, Signal Hill, CA, and Norwalk, CA with the same written upfront pricing and the same clean-up standard on every job.
Serving Lakewood, CA - Our Local Coverage Area
We’re based in the Lakewood 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 Lakewood
We typically schedule Lakewood estimates within three to five business days, and since our Los Angeles-area office handles dispatch and our crews live nearby, we can often work around your weekday or Saturday schedule. Call (562) 362-4592 and a live person will set the appointment, not a voicemail tree.
Yes. Every detached ADU, garage conversion, and home addition in Lakewood goes through the city’s planning and building review, and our scope of work includes pulling permits and coordinating inspections. We handle that process for you, and any permit fees are listed as a line item in your written price.
Some Lakewood neighborhoods have active homeowners associations with design standards for exterior finishes and fencing, even though the city’s zoning allows the ADU itself. We review your HOA’s architectural guidelines before finalizing plans, so the design clears both the city and the association on the first pass.
If you’re weighing a detached ADU, a garage conversion, or a home addition in Lakewood, call (562) 362-4592 for a free estimate. You’ll get a written price before any work starts, and a straight answer about what your lot can support.
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 Lakewood Customers Say
"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"Garage conversion into a studio. They sealed off the work area so dust didn't get into the house, and cleaned up every day before leaving. Calm, careful team to have around."
- Darnell Hobbs
