Kitchen remodeling
Bathroom remodeling
Home additions & ADU
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Remodeling Company in Los Serranos, CA
Home renovation in Los Serranos means working with older ranch-style homes, large semi-rural lots, and county-level permitting that catches out contractors who only know city hall. We handle full-scope remodels here, from structural fixes and kitchen rebuilds to roofing, windows, and hardscape work, all under one contract. If you’re planning work on a property in the 91709 ZIP, call (877) 688-9930 and we’ll walk you through what your specific site actually needs.
Why Los Serranos Homes Are Different
Los Serranos is an unincorporated pocket of San Bernardino County completely surrounded by Chino Hills. That single fact changes how every permit, inspection, and plan check goes. A remodel on one side of a street can run through county building and safety, while the house across the road goes through Chino Hills city plan check. Get that wrong and you lose weeks before demolition even starts.
The housing stock is just as varied. Near Los Serranos Country Club you’ll find large-lot properties built decades ago, many on septic and well systems that have never been upgraded. Along the Chino Hills border there are original ranch-style homes from the 1960s and 1970s with framing, electrical panels, and plumbing that predate modern codes. Then there’s newer tract infill mixed in. A renovation here isn’t a paint-and-tile job. It’s often a systems upgrade: panel replacement, sewer tie-in evaluation, shear wall work, and fire-hardening because of the hot summers and Santa Ana wind season. We plan for all of it before we open a wall.
Styles & brands we work with
Our Main Los Serranos Services
Most Los Serranos homeowners reach out to us for two things: a general contractor who can run a complicated project end to end, or a full home remodel that touches multiple systems at once. Here’s what each involves in this area.
General Contractor in Los Serranos
When a Los Serranos project involves county permits, structural changes, or coordinating more than two trades, a general contractor is the person who keeps the schedule, the budget, and the inspection calendar from falling apart. We’ve managed additions on sloped hillside lots, full interior gut jobs on older ranch homes, and exterior packages that combine roofing, siding, and windows. Because we work across every system, we catch conflicts before they become change orders. If you’re weighing a whole-house renovation or an addition, start with our General Contractor in Los Serranos page for the full picture.
Home Remodeling in Los Serranos
A Los Serranos remodel usually means more than new cabinets. The older homes around the country club and the Chino Hills border often need structural repairs, panel upgrades, or drainage fixes before finish work makes sense. We handle the full scope so you’re not hiring a kitchen contractor, then a roofer, then a window company. One contract, one schedule, one accountable team. See how we approach the whole project on our Home Remodeling in Los Serranos 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.
Home Renovation in Los Serranos
Home renovation in Los Serranos typically means bringing a 1960s or 1970s house up to what the lot and the lifestyle actually demand now. That might be a full kitchen and bath rebuild, roof replacement, window upgrades, or a rear patio and driveway overhaul. Because so many homes here sit on large lots with aging electrical, septic, and drainage systems, the renovation conversation usually starts below the surface. We scope the whole project from the ground up so the finished rooms don’t sit on failing infrastructure. If you’re looking for a single team to handle the entire renovation, read more on our Home Renovation page.
Home Renovation Contractors
Signs you need it
You’re planning work that touches two or more systems at once, like a kitchen remodel that also needs a panel upgrade, or an addition that requires roof tie-in and drainage work.
What it costs in Los Serranos
A full home renovation in Los Serranos generally falls between $14,000 and $130,000 depending on how many rooms and systems are involved.
How we do it
We start with a site walk and systems assessment, then scope the work in phases so each permit, inspection, and trade flows in the right order without stalling the job.
Home Renovators
Signs you need it
You bought an older Los Serranos home and the floor plan, systems, or finishes no longer match how you actually live in the house.
What it costs in Los Serranos
Renovator-led projects here usually run from $14,000 for a focused single-room update to $45,000 for a full kitchen rebuild or $28,000 for a complete bathroom renovation.
How we do it
We handle demolition, structural repairs, and finish work under one crew, with brand selections made before we open walls so the schedule holds.
Home Improvement Contractors
Signs you need it
Your existing house is structurally sound but the kitchen, baths, flooring, windows, or exterior are worn and you want one accountable team to improve the whole property.
What it costs in Los Serranos
Home improvement packages in Los Serranos typically run $3,000 for a shower replacement up to $15,000 for a full window replacement, depending on scope and brand.
How we do it
We sequence the improvements so dust, noise, and disruption stay contained, and we pull the right county or city permits before any work begins.
Home Renovation Companies
Signs you need it
You’ve gotten three quotes from three different specialty contractors and none of them agree on scope, sequence, or who’s responsible for the hand-offs.
What it costs in Los Serranos
Working with one full-scope renovation company in Los Serranos starts around $9,000 for a small kitchen and reaches $130,000 for a significant home addition.
How we do it
We bring the full trade stack in-house, from rough framing and mechanicals to cabinetry, countertops, tile, and exterior finish work.
Renovation Contractors
Signs you need it
Your project has a structural component, hillside drainage, or county permit complexity that a finish-only contractor won’t touch.
What it costs in Los Serranos
Renovation contractor scopes in Los Serranos range from $800 for a backsplash install to $90,000 – $220,000 for a full ADU build, with most mid-size remodels between $14,000 and $45,000.
How we do it
We pull permits, manage inspections, coordinate structural engineers when needed, and keep one project manager on your job from first walkthrough to final sign-off.
What Home Renovation Costs in Los Serranos
| Item | Typical range in Los Serranos |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Home Addition | $45,000 – $130,000 |
What’s the first step in a Los Serranos home renovation?
We walk the property, check the systems (panel, sewer, drainage, roof), and map the permit path before any pricing is finalized. That site assessment is free. Call (877) 688-9930 to schedule yours.
How long does a home renovation take in Los Serranos?
A single-room renovation runs four to eight weeks. A whole-home or addition project typically takes four to nine months, with county permit review sometimes adding three to six weeks at the front. We’ll give you a written schedule before work starts.
Brands We Service in Los Serranos
We install and service materials from a curated brand portfolio, including Therma-Tru entry doors, ViewLux windows, Barrette fencing, and Master Halco fence systems. Because we work directly with these manufacturers, lead times stay predictable for Los Serranos jobs even during busy seasons. See the full range on our brands page.
See the difference
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AfterPricing for Remodeling Company in Los Serranos, CA
| Service | Typical range in Los Serranos |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Paver Patio Installation | $3,500 – $11,000 |
| Roof Replacement | $8,000 – $20,000 |
| Window Replacement | $4,500 – $15,000 |
| Vinyl Fence Installation | $3,500 – $9,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
| Concrete Driveway Installation | $4,500 – $12,000 |
What pushes a Los Serranos job higher than the base range is usually site condition: sloped access, old septic or well systems that need tie-in work, or county-required structural upgrades on older ranch homes. We price from a written line-item estimate and we don’t change the number once the contract is signed.
Neighborhoods We Serve in Los Serranos
We work throughout the 91709 ZIP, from the large-lot homes near Los Serranos Country Club to the ranch-style neighborhoods along the Chino Hills border and the newer infill developments. Our crews are typically in the area within a few days for estimates and site walks.
- Los Serranos Country Club area
- Ranch-style homes along the Chino Hills border
- Semi-rural large-lot properties off Pipeline Avenue
- Newer tract infill near Butterfield Ranch Road
- Hillside lots east of the 71
Service Area – Cities Near Los Serranos
Square One Builders has served Los Serranos since 2014, and we take on projects in the surrounding communities as well. You’ll find us working in Chino, CA just south of the 60, across the hills in Yorba Linda, CA, up in Montclair, CA, and over in Pomona, CA. If your home sits near one of these borders, call and we’ll confirm which jurisdiction handles your permits.
Serving Los Serranos, CA — Our Local Coverage Area
We’re based in the Los Serranos 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 Remodeling Company in Los Serranos
It depends on the exact address. Los Serranos is unincorporated San Bernardino County, so most projects go through county building and safety, but some border properties may trigger Chino Hills review for certain scopes. We verify the jurisdiction before we pull anything. Call (877) 688-9930 and we’ll check your specific parcel.
Yes. Many Los Serranos properties near the country club and along the county’s northeast edge run on septic and private wells. We coordinate the necessary health department approvals and plan renovation scopes around existing system locations so you don’t end up tearing out a new patio to access a tank. Estimates for this are free.
We schedule exterior work, roofing, and any hot-work operations around red flag warnings and local fire restrictions. If your renovation includes fire-hardening upgrades like Class A roofing material or ember-resistant venting, we fold those into the same permit package. Call (877) 688-9930 to talk through timing for your specific project.
Planning a remodel, renovation, or addition in Los Serranos? Call Square One Builders at (877) 688-9930 for a free, no-pressure estimate. One contractor, every system, from the ground up.
What happens when you call
- 1A real person answersNo phone trees — talk to a local construction 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 Los Serranos Customers Say
"Every inspection passed first time. The building department clearly knows him and that made the whole process easier."
— Christine Yang"He caught an error in the engineer's drawings before it got framed, which would have been an expensive thing to discover later."
— Lucia Martinez"Allowances in the contract were realistic rather than artificially low to make the bid look good."
— Colleen Bennett