ADU Company in Cerritos, CA
An ADU in Cerritos is usually not a rental play. It’s a permanent home for parents, adult children, or extended family who want to stay inside the ABC Unified School District boundary. That changes the design conversation, the budget, and the permitting approach compared to nearly any other city in LA County. Lodgewick ADU Builders handles accessory dwelling units, garage conversions, and home additions here, and every project starts with a written price before any work begins. Call (254) 602-5618 to schedule a free on-site estimate.
Why Cerritos Homes Are Different
Cerritos’s housing stock is unusually uniform: ranch-style stucco homes built between 1960 and 1980 on 6,000 to 8,000 square foot lots, most with attached two-car garages. That garage is where ADU conversations usually start. But there’s a catch specific to this city. In nearly all of those 1960s and 70s tract homes, the main electrical panel sits on an interior garage wall, exactly where the conversion happens. Moving that panel to an exterior or utility location runs $2,500 to $4,500, and any experienced local contractor prices it in from the first walkthrough. Summer highs in the low-to-mid 90s°F also mean a garage or detached ADU needs its own mini-split system; California Title 24 does not let the main home’s ducted HVAC serve a new unit. We plan for both of these realities from day one, not as surprises halfway through the job.
A third factor: most of Cerritos was mass-developed from former dairy land, so the original 100-amp electrical panels and aging galvanized or early copper plumbing routinely need full upgrades before an ADU clears permit. Homeowners who hear a low first number from a contractor who has not walked the property are often hearing a number that will change. Ours does not change. We put it in writing.
Our Main Cerritos Services
Cerritos homeowners call us most about three things: adding square footage to the main house, converting an attached garage into living space, and building a standalone ADU. Each has its own dedicated Cerritos page with full details.
Home Addition Contractor in Cerritos
Adding onto a Cerritos ranch-style home means working within the original footprint’s rooflines and the city’s setback rules, which can be tight on 6,000 to 8,000 square foot lots. We regularly see families adding a primary suite or extended living area rather than moving, especially when kids are settled in Whitney High School or another ABC Unified school. Your home addition gets a dedicated page here: Home Addition Contractor in Cerritos.
Garage Conversion Contractor in Cerritos
A garage conversion in Cerritos almost always starts with that interior-wall electrical panel relocation we mentioned, plus running new sub-panel capacity for the living space. The city permit process also requires bringing the converted space up to current energy code. It is the fastest path to livable square footage on the existing lot, but only if the structural, electrical, and insulation details are done correctly the first time. Full scope and pricing live on Garage Conversion Contractor in Cerritos.
ADU Builders in Cerritos
Detached ADUs are the most flexible option for families who want privacy on both sides of the yard. On a Cerritos lot, that means a compact one- or two-bedroom unit in the rear yard, designed around the same 90°F summer requirement for its own cooling system. We match each homeowner to the right build path, whether that is a site-built ADU or a prefab system from a manufacturer like Abodu or Cover. The full Cerritos ADU overview is here: ADU Builders in Cerritos.
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
We work with established ADU and materials brands including Abodu, Cover, and James Hardie, matched to each Cerritos lot, budget, and timeline. For more on the brands we service and how we pair them to specific property conditions, see our brands.
Pricing for ADU Company in Cerritos, CA
| Service | Typical range in Cerritos |
|---|---|
| Full ADU build | $150,000 – $350,000 |
| Garage conversion (full) | $110,000 – $180,000 |
| Garage conversion (simple buildout) | $55,000 – $90,000 |
| Home addition (gross) | $250 – $500 per sq ft |
| Home addition (net) | $200 – $400 per sq ft |
| Architectural and engineering plans | $8,000 – $20,000 |
| Permits and impact fees | $5,000 – $15,000 |
| Site prep and grading (when required) | $5,000 – $20,000 |
| Utility connections (water, sewer, electrical) | $3,000 – $8,000 |
| Interior finishes (turnkey package) | $30,000 – $80,000 |
| HVAC system (mini-split, dedicated) | $6,000 – $14,000 |
| Landscaping and exterior cleanup | $3,000 – $10,000 |
What pushes price up in Cerritos specifically: the mandatory interior panel relocation on most garage-converted 1960s and 70s homes, 100-amp service upgrades, and lot access constraints in older planned subdivisions. The most important number is the one on your written price, provided before any work starts, and it does not change at the door.
Neighborhoods We Serve in Cerritos
Our crews work across the entire Cerritos area, including the neighborhoods inside the ABC Unified School District boundary and the tracts that back up to the 605 and 91 corridors. In most cases, we can get a project lead to your property within a few business days for the initial walkthrough and site assessment.
- Heritage Park area
- Liberty Park area
- Shadow Park area
- West of Carmenita Road
- East of the 605 corridor
Service Area – Cities Near Cerritos
We also schedule ADU, garage conversion, and home addition work in nearby communities. If your property is in Artesia, CA, La Palma, CA, Hawaiian Gardens, CA, or Norwalk, CA, we can arrange a site visit and written estimate there as well.
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
The City of Cerritos reviews ADU and garage conversion plans under California state ADU law, which fast-tracks most applications within 60 days. Plan checks focus on building code compliance, energy code, and zoning setbacks. We handle full plan preparation and permit filing as part of every project. Call (254) 602-5618 and we will walk you through your specific property’s steps.
Plan on $150,000 to $350,000 for a full detached ADU, and $110,000 to $180,000 for a full garage conversion. Cerritos-specific cost drivers include interior panel relocation, older plumbing, and Title 24 cooling requirements. Your written estimate accounts for all of it up front; no change orders at the door.
We manage the entire project from first walkthrough to final inspection: plans, permits, demo, construction, electrical, plumbing, HVAC, finishes, and clean-up. One point of contact, one written price, and a written guarantee on the completed work. Call (254) 602-5618 to schedule a free estimate.
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
"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