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 $180,000 and $320,000 for a detached unit before site work, while a garage conversion on one of the city’s 1940s-era lots typically runs $90,000 to $160,000. Those ranges reflect real Lakewood conditions: older single-story homes, 5,000 to 7,000 square foot lots, and a city planning approach that respects the mid-century character of neighborhoods. We’re Sutton ADU Builders, and we give homeowners a written price before any work starts, with a crew you know by name and face before they arrive. Call (562) 317-7042 for a free estimate.
Why Lakewood Homes Are Different
Most homes in Lakewood were built between 1940 and 1960. They’re single-story, wood-framed with stucco exteriors, and they sit on lots generous enough that a detached ADU rarely feels cramped. What’s more interesting is the garage situation: many properties have original detached one- or two-car garages at the rear of the lot, accessed from an alley or a long driveway. Those garages are structural candidates for conversion, and Lakewood homeowners have been quietly turning them into rental units, in-law suites, and home offices for years.
The climate helps. Lakewood’s warm, dry summers and cool, wet winters mean we don’t fight extreme humidity or freeze-thaw cycles. Standard insulation works well. The real weather concern is ventilation: during rainy-season months, a poorly vented ADU can trap moisture, so we pay close attention to airflow, bath fans, and crawlspace detailing on every Lakewood job. The city also enforces aesthetic guidelines for front-facing structures, which is one reason so many owners prefer a rear garage conversion over a front-facing addition: it preserves the original facade and keeps the streetscape consistent with the mid-century look Lakewood is known for.
Our Main Lakewood Services
The two calls we get most from Lakewood homeowners are about building a detached ADU and converting an existing garage. Here’s what each involves locally.
Home Addition Contractor in Lakewood
A home addition in Lakewood means extending a single-story, wood-framed house on a lot that usually has room to grow. Most additions we quote in Lakewood tie into the existing roofline and match the stucco exterior, so the only visible seam is one nobody notices. Because many homes here were built on slab foundations, we check soil and drainage before we commit to a foundation plan, and the city’s permit process is straightforward for single-story work. Find out what a written, fixed price looks like for your lot: Home Addition Contractor in Lakewood.
ADU Builders in Lakewood
Detached ADUs in Lakewood work well because the lots are wide enough to keep a backyard that still feels like a backyard. A 400-square-foot unit with a bathroom and kitchenette is the most common build we quote; a two-bedroom, 750-square-foot unit is the largest we see regularly on 7,000-square-foot lots. The city’s setback rules, the required gap between your new structure and the property line, are predictable here, which makes planning faster. We also work with prefab brands including Abodu and Plant Prefab when a homeowner wants factory-built speed. Start with a fixed quote: ADU Builders in Lakewood.
Room Addition Contractor in Lakewood
A room addition in Lakewood is often a single bedroom bump-out or a family room extending into the backyard. On 5,000-square-foot lots, the build needs to respect the property-line setback without eating the whole yard, and on stucco homes the exterior match is straightforward. If the existing roof is original 1950s composition, we’ll flag whether a simple tie-in works or whether the whole roof plane needs attention. That’s the kind of thing a written estimate should tell you before you’re committed. See how we price it: Room Addition Contractor in Lakewood.
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 maintain authorized experience with ADU product lines including Abodu, Plant Prefab, and Tuff Shed, plus James Hardie exterior systems for additions that need a clean, durable finish. Having brand familiarity means we can give you an honest read on which line fits your Lakewood lot and budget, not a sales pitch. See our full list at our brands page.
Pricing for ADU Company in Lakewood, CA
| Service | Typical range in Lakewood |
|---|---|
| Detached ADU (400 sq ft studio) | $150,000 – $210,000 |
| Detached ADU (600 sq ft, 1 bed/1 bath) | $190,000 – $270,000 |
| Detached ADU (750 sq ft, 2 bed/1 bath) | $240,000 – $320,000 |
| Garage conversion (single-car) | $90,000 – $140,000 |
| Garage conversion (two-car) | $120,000 – $160,000 |
| Tuff Shed conversion to ADU | $110,000 – $180,000 |
| Prefab ADU (including factory unit) | $180,000 – $250,000 |
| Site work, utilities, and permits | $20,000 – $45,000 |
| Room addition (300 sq ft) | $85,000 – $125,000 |
| Primary suite addition (400 – 500 sq ft) | $120,000 – $180,000 |
What pushes the price up in Lakewood is usually foundation condition on the original 1950s slab, a detached garage that needs seismic or electrical upgrades before conversion, or a lot irregularity that makes access for equipment tighter. Whatever the number ends up being, you get it in writing before we lift a tool, and that written price does not change mid-project unless you change the scope.
Neighborhoods We Serve in Lakewood
We work across Lakewood on the east side near the San Gabriel River, through the central neighborhoods around Del Amo Boulevard, and over toward the Long Beach border. Scheduling crews means we’re usually inside the city within a day or two of your approved estimate.
- Mayfair
- Lakewood Mutual
- Lakewood Village
- Del Amo
- Interlaken
Service Area – Cities Near Lakewood
Our crews serve Lakewood directly, and we also cover the surrounding communities where homeowners face similar mid-century housing stock and garage-conversion opportunities: Long Beach, CA, Bellflower, CA, Signal Hill, CA, and Lomita, CA. If your lot backs up to one of those borders, call and we’ll confirm coverage.
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 schedule site visits in Lakewood within a few business days of your call, and the estimate you receive is written, not verbal. Once you approve the price, permitting with the city typically takes the standard Lakewood timeline, and we handle the paperwork. Call (562) 317-7042 to get the process moving.
Some Lakewood neighborhoods have homeowners associations with architectural review requirements, particularly for front-facing changes. A rear garage conversion usually avoids HOA scrutiny, but a detached ADU with street visibility may need sign-off. We’ll help you confirm what applies to your property before you spend a dollar.
No. Sutton ADU Builders delivers a written price before any work begins, and that number stays fixed unless you ask to change the scope. The 365-Day Done Right Promise covers workmanship for a full calendar year after completion. For an exact quote on your Lakewood lot, call (562) 317-7042.
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
"Insulated the walls and ceiling properly. It stays comfortable even in July."
- Tamika W."Every crew member was vetted and carried a badge, which matters when they are around your family for months. Tidy site every day."
- Daniel F."Garage conversion into a studio. They framed the insulation, added a mini split, and matched the siding. Inspectors passed everything on the first visit."
- Andrew K.
