A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Cerritos, CA
Benson ADU Builders is the ADU company Cerritos homeowners call when they want a written price before any work starts, access to top prefab brands like Abodu and Cover, and a 365-Day Done Right Promise in writing. Cerritos lots are a specific animal: mostly flat, mostly built out in the 1960s and 1970s, with mature landscaping and homes that sit close to their property lines. That means setbacks, space planning, and panelized or prefab delivery logistics drive almost every decision on an ADU here. We’re not guessing. We’re measuring, pricing, and putting it on paper before you commit a dollar. Call (903) 568-7222 and you’ll get a live person, not a voicemail.
Why Cerritos Homes Are Different
Cerritos is one of the flattest cities in southeast Los Angeles County, which sounds like it makes construction easy. It mostly does. But two things make ADU work here different from, say, a hillside lot in the Palos Verdes area or a wide-open new-build parcel further east. First, the housing stock: Cerritos grew fast in the 1960s through the 1980s, which means most lots are rectangular, most side yards run seven feet or less on at least one side, and many backyards hold mature ficus, magnolia, or citrus trees that are older than the homeowners themselves. An ADU placement that looks fine on a county parcel map can die on a tape measure because a 50-year-old magnolia’s root zone sits exactly where the foundation wants to go.
Second, the setbacks matter more than people expect. Cerritos lots were subdivided for single-family homes at the time, not accessory units. A standard 4-foot side setback can eat a surprising amount of a 40-foot-wide lot once you account for the main house, the garage, and the walkway. We map all of that in the first visit, flag any tree or utility conflict, and write the price around what’s actually buildable. Some neighborhoods, especially the pockets west of Carmenita Road and east of Pioneer Boulevard, have slightly deeper lots that work well for a 2-bedroom ADU. Others, a one-bedroom or a JADU (junior ADU, a unit built inside the footprint of the existing home) is the smarter use of the same budget.
Our Main Cerritos Services
Cerritos homeowners usually reach out for one of two things: a detached ADU in the backyard or a home addition that expands the existing footprint. Here’s what each involves locally.
ADU Builders in Cerritos
An ADU in Cerritos typically means either a site-built unit or a prefab from Abodu, Cover, or Dvele, placed in a backyard that’s already working hard. We handle everything from setback checks and site prep to foundation, utilities, and final sign-off. Cerritos lots favor compact, well-planned footprints: a 1-bedroom around 450 to 600 square feet usually fits with far less disruption than a 900-square-foot unit. We’ll show you both paths, with prices, before you choose. Read the full local breakdown on our ADU Builders in Cerritos page.
Home Addition Contractor in Cerritos
A home addition in Cerritos means tying new square footage into a house that was framed forty or fifty years ago. That’s very doable, but it means matching roof lines, stucco texture, and floor elevations so the addition doesn’t read as an add-on. We also check the existing foundation and attic structure before we price anything, because a 1970s post-and-beam addition behaves differently than a 1990s slab-on-grade. No verbal ballpark. A written, line-itemed price before any work starts at your Cerritos home. See Home Addition Contractor in Cerritos.
Room Addition Contractor in Cerritos
A room addition is the most common permit path in Cerritos when a homeowner needs one more bedroom, a home office, or a larger kitchen and doesn’t want to lose yard space to a detached unit. The work usually stays within the existing roofline, though not always. We’re careful with dryer vents, window egress, and the way a new room changes light into the existing rooms. It’s a smaller project than a full addition, but the pricing discipline is the same. Details live on our Room Addition Contractor in Cerritos 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 Cerritos
Benson ADU Builders is authorized to build with Abodu, Cover, Dvele, and James Hardie cladding, and our Cerritos clients get to choose among them instead of being handed one take-it-or-leave-it option. The parts and panel sets we don’t stock locally are routed through our Los Angeles dispatch office, which keeps wait times in Cerritos short. See our brands for the full lineup and specs.
Pricing for ADU Company in Cerritos, CA
You should know the ballpark before you tap “call.” Here are the ranges we see for Cerritos-sized projects right now.
| Service | Typical range in Cerritos |
|---|---|
| Detached ADU, site-built (1-bedroom) | $180,000 – $240,000 |
| Detached ADU, site-built (2-bedroom) | $240,000 – $320,000 |
| Prefab ADU (Abodu or Cover, installed) | $160,000 – $260,000 |
| JADU conversion (attached, inside existing footprint) | $80,000 – $140,000 |
| Garage conversion to ADU | $110,000 – $180,000 |
| Home addition (primary suite, 300 – 500 sq ft) | $150,000 – $250,000 |
| Room addition (single bedroom or office, 180 – 300 sq ft) | $90,000 – $160,000 |
| Kitchen expansion (150 – 250 sq ft) | $110,000 – $190,000 |
What pushes a Cerritos price up is usually tree removal, a longer utility run from the street to the new unit, or an existing structure that needs structural remediation before we can tie in. What doesn’t push the price up is our quoting process. The price we write is the price you pay. That’s the whole point of a written estimate before work starts.
Neighborhoods We Serve in Cerritos
We work all over Cerritos, and the job looks a little different depending on where you are. Older tracts near the civic center have tighter yards. Newer developments east of the 605 have newer utility lines and fewer tree conflicts.
- Shadow Park area
- West of Carmenita Road
- East of Pioneer Boulevard
- Cerritos Towne Center vicinity
- Los Coyotes Diagonal area
Most Cerritos estimates happen within a few days of your call, and the written price comes to you before any site work is scheduled.
Service Area – Cities Near Cerritos
We take a limited number of projects outside Cerritos proper each month, mostly for homeowners in Artesia, CA, La Palma, CA, Hawaiian Gardens, CA, and Norwalk, CA. If you’re in one of those cities and want the same written-price process we give Cerritos homeowners, call us and we’ll tell you flat out whether we can take the job.
Serving Cerritos, CA - Our Local Coverage Area
We’re based in the Cerritos 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 Cerritos
Most Cerritos homeowners get an on-site visit within a few days of calling. We schedule around your availability, not ours, and the written price comes after we’ve measured and walked the lot. Call (903) 568-7222 and a live person will get you on the calendar.
Some Cerritos neighborhoods have HOAs with architectural review, but California law prevents HOAs from banning ADUs outright. We’ll identify any HOA requirements during the estimate phase and make sure your plans meet them before you spend a dollar on permits. You’ll know what you’re dealing with, in writing.
Yes. Benson ADU Builders prepares and submits the permit set for Cerritos projects, and we work through plan-check corrections until the permit is issued. You don’t chase the city. We do. You’ll see the status of everything in our real-time project tracking, and every step is documented before we start framing.
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 Cerritos Customers Say
"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."Clean, quiet crew. They respected the neighbors, kept noise to working hours, and swept the driveway every evening."
- Hope C."Communication was the best part. I always knew what was happening that week without having to ask."
- Dolly N.
