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
Fast, Reliable General Contractor Across Los Serranos
Hiring a general contractor in Los Serranos means hiring someone who understands county land. Most of the 91709 ZIP sits in unincorporated San Bernardino County territory, not inside Chino Hills city limits, and that distinction changes permitting, setbacks, grading review, and project timelines before a single shovel hits dirt. Gold Star Contractors works on acreage lots, equestrian properties, tract homes, and hillside builds throughout Los Serranos, and we quote work based on the actual jurisdiction and site conditions, not an assumption. Call (833) 382-8544 for a free estimate from a team that has walked these lots.
Why Gold Star Contractors Is Los Serranos’s Preferred General Contractor Company
Los Serranos homeowners tend to know their properties well. They know where the drainage sheets, where the Santa Ana winds hit, and whether the county or the city has a say in their next project. What they want from a contractor is the same fluency. Our team, led by Noel Carranza, has scoped work across the Carbon Canyon corridor and around the Los Serranos Country Club, where the permitting line between San Bernardino County and Chino Hills shifts from lot to lot. That local knowledge means we confirm jurisdiction before we write scope, and we do not quote a project until we understand the grading, access, and setback realities of the specific parcel.
Homeowners in Los Serranos consistently tell us they chose Gold Star because we responded with actual answers about their lot, not a generic bid. We carry the full general contracting scope, from interior remodels to exterior systems to ADUs and prefab structures, but what matters most here is that we know how an acreage lot in this specific community behaves. The soil, the slope, the wind exposure, the county inspection rhythm. That is what keeps a project moving.
We do not ask Los Serranos homeowners to coordinate five different contractors. One call to (833) 382-8544 puts a single accountable team on the job, with access to more than 50 vetted manufacturer brands and the trades to install them correctly.
Styles & brands we work with







Remodeling Contractor in Los Serranos
A remodeling contractor in Los Serranos is usually working inside a 1970s-to-2000s ranch or tract home while also dealing with what sits outside it: aging drainage, slope movement, and open-lot grading that any interior remodel still has to respect. Whether you are updating a kitchen, reworking bathrooms, or opening up a whole floor plan, the remodel has to be planned against the lot conditions, not just the room dimensions.
Kitchen remodels in Los Serranos typically run $14,000 to $45,000 depending on cabinet lines, countertop stone, and layout changes. Bathroom remodels fall between $9,000 and $28,000, with smaller bath refreshes starting around $5,000. We quote these ranges after walking the home and confirming what the county will require, because a remodel permit on the county side of Los Serranos can involve drainage and setback review that a city-side home would never trigger.
Whole Home and Interior Scope
Whole home remodels and open-concept reconfigurations on older Los Serranos homes frequently expose framing, electrical, and plumbing conditions that phone estimates miss. We open walls before we finalize the number, so the bid reflects the house, not a hope.
Finishes and Cabinetry
We specify cabinet and countertop lines like KraftMaid, Wellborn, Cambria, Caesarstone, and Silestone, and we install them with the technical standards those manufacturers require. A Los Serranos kitchen with Cambria countertops and a Wellborn cabinet run should look like it belongs in the neighborhood, not in a catalog.
Licensed General Contractor in Los Serranos
A licensed general contractor in Los Serranos is the difference between a project that passes county inspection on the first sign-off and one that stalls at the foundation. Because much of the 91709 ZIP is under San Bernardino County permitting, the license has to be backed by a working knowledge of county plan review, grading requirements, and the specific setbacks that govern acreage and equestrian lots near the country club.
Gold Star Contractors is led by Noel Carranza, and we carry full general contracting scope across new construction, remodeling, and renovation. On a Los Serranos lot, that license means we can pull the correct county permits, manage the site plan, schedule inspections, and hand over a written punch list at the end. ADU construction here typically runs $90,000 to $220,000, and home additions range from $45,000 to $130,000. Garage conversions sit between $30,000 and $80,000. Those numbers assume the site work is scoped correctly from the start, which is exactly what we do before quoting.
ADUs, Shops, and Outbuildings
Detached ADUs and shops on Los Serranos acreage lots are not standard builds. Well and septic setbacks, county grading review, and equipment access all shape the price and the schedule. We lay out the setbacks on the site plan before we commit to a number.
Grading and Retaining
Open lots in the Chino Hills foothills move water in patterns that older homes were not always built to handle. We scope drainage, swales, and retaining walls as part of the project, not as an add-on after the first storm.
Trusted Brands We Service in Los Serranos
Los Serranos homeowners deserve materials that hold up to inland heat, Santa Ana wind, and fire season. We specify brands like Therma-Tru for exterior doors, Master Halco for fencing, and Barrette for rail and accent systems, because these are products built for the conditions this community actually faces. Our access to 50+ manufacturer brands means you choose the material, not the limitation. We specify the brand, manage the install, and stand behind the result, and we keep the supply chain local enough that a Los Serranos project does not stall waiting on parts from out of state.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Los Serranos Homes
- Wrong jurisdiction assumptions. A homeowner near the Los Serranos Country Club starts a project thinking Chino Hills rules apply, pulls the wrong permit, and gets stopped at the first county inspection. We confirm jurisdiction before any scope of work is written.
- Well and septic setbacks on acreage. An ADU or detached shop that looks simple on a map can conflict with an existing well or leach field. We survey the setbacks early so the county review does not kill the layout later.
- Drainage and slope movement. Hillside and canyon-edge lots in the 91709 ZIP shed water toward structures and barns. A remodel that ignores grading will expose an under-built retaining wall the first winter.
- Material haul and equipment access. Long driveways and open acreage mean material delivery and equipment staging cost more and take longer. A quote that does not account for haul distance becomes a change order. We site-walk before we quote.
Pricing for General Contractor in Los Serranos, CA
Los Serranos pricing is shaped by jurisdiction, lot conditions, and access, not just square footage. The table below reflects what we see across the 91709 ZIP for common scopes. These are honest ranges, built from actual site walks, not phone guesses.
| Project | Typical Range in Los Serranos |
|---|---|
| ADU Construction | $90,000 – $220,000 |
| Home Addition | $45,000 – $130,000 |
| Garage Conversion | $30,000 – $80,000 |
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Roof Replacement | $8,000 – $20,000 |
| Paver Driveway Installation | $7,000 – $18,000 |
What moves a Los Serranos number the most is not the finishes, it is the site. County grading review, well and septic setbacks, haul distance to the build pad, and retaining wall scope all land on the bid before the first cabinet is ordered. We would rather walk your lot, confirm the jurisdiction, and give you a written line-item quote than sell you a number we cannot hold. Call (833) 382-8544 to schedule a free estimate.
We Also Serve Cities Near Los Serranos
While this page is focused on Los Serranos, our General Contractor team also works across Chino, Yorba Linda, Montclair, and Pomona. If you are on the edge of the 91709 ZIP or just across the county line, we are already familiar with the permit offices and site conditions in those areas too. Learn more about our work specifically in General Contractor in Los Serranos on the city page.
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 General Contractor in Los Serranos
A Los Serranos project is permitted by San Bernardino County when the parcel sits in unincorporated territory, even if it carries a Chino Hills mailing address, and by the city when it sits inside Chino Hills city limits. We confirm the jurisdiction by parcel before writing any scope, because pulling the wrong permit stalls the project at the first inspection sign-off. Call (833) 382-8544 and we will check your parcel as part of the free estimate.
Well and septic setbacks on a Los Serranos acreage lot can push a detached ADU or shop to a completely different part of the property, which changes grading, utilities, and the final price. We map the setbacks before we quote, so the layout the county approves is the layout we build. For an exact number on your parcel, call (833) 382-8544.
Equipment access and material haul distance change a Los Serranos quote because open acreage and long driveways mean concrete trucks, delivery vehicles, and crews spend more time and fuel reaching the build pad, and some sites need temporary access work first. A phone estimate that skips this becomes a change order. We site-walk every job before quoting, and the estimate is free at (833) 382-8544.
On a Los Serranos open lot, you should expect to scope drainage swales, re-set pad grades, and at minimum a small retaining wall if the grade runs toward a structure or a barn, and the county will typically want that on the site plan before approving the foundation. Santa Ana winds and seasonal runoff expose under-built slopes fast. We include grading and drainage in the original quote, not as a discovery item after you have signed. Call (833) 382-8544 to walk your lot with us.
We keep allowances and change orders from blowing up a Los Serranos acreage remodel budget by walking the site, confirming the jurisdiction, and pulling the actual county requirements before we hand you a written line-item quote. We set realistic allowances for finishes and hold them unless you change the scope. Your home is too important to coordinate five different contractors, so we keep the entire scope under one accountable team. Call (833) 382-8544 for a free estimate that covers the whole lot, not just the building.
Written by Noel Carranza, Owner at Gold Star Contractors, serving Los Serranos and the surrounding Chino Hills foothills communities.