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 San Bernardino
Finding a General Contractor who understands San Bernardino’s specific building requirements isn’t easy. Our team works across 92401, 92402, 92403, and 92404 with a working knowledge of what the city’s historical building department actually requires. Whether you’re remodeling a 1920s bungalow near downtown or building a room addition in the foothills, we coordinate permits, engineering, materials, and trades under one contract. Call (833) 467-7020 to talk through your project scope and get a free written estimate.
Why Alder Contractors Is San Bernardino’s Preferred General Contractor Company
San Bernardino homeowners hire us because we’ve worked through the city’s plan review process enough times to know what gets flagged and what passes. Nelson Ibarra, our owner, has walked inspectors through load-bearing connections on additions in the 92407 foothills and navigated the historical building department’s specific wind-load checklists on reroofs in 92401. That local knowledge means fewer permit delays and fewer change orders after work begins.
Our reputation across San Bernardino is built on jobs where the scope stayed true to the quote. We carry full general contracting license coverage for interior remodeling and exterior construction, and we’re insured and bonded. When a homeowner in Loma Linda or Highland asks who we’d recommend for a General Contractor in San Bernardino, our name comes up because the inspection sign-offs are clean and the work holds up through wind season.
Styles & brands we work with
Hire a General Contractor in San Bernardino
Hire a General Contractor in San Bernardino when your project spans multiple trades that have to be sequenced correctly. A kitchen remodel here often means opening walls in a mid-century tract home and finding original single-wall construction or unpermitted electrical work from decades ago. A room addition means submitting engineered plans that meet the city’s exposure categories for the Cajon Pass wind corridor. The work isn’t just swinging hammers. It’s coordinating plumbers, electricians, framers, roofers, and inspectors so the job passes on the first attempt.
Home additions in San Bernardino typically run $45,000 to $130,000 depending on foundation work, structural upgrades, and finish level. ADU construction ranges from $90,000 to $220,000. These figures reflect the engineering and city-specific compliance work that a bare-bones quote often skips.
Foundation and structural scope
Older San Bernardino homes frequently need foundation or shear-wall upgrades before an addition can be permitted. We include those line items in the first estimate, not as a surprise change order later.
Permit and plan review coordination
We handle the plan submission, the city’s plan review comments, and the inspection scheduling. You don’t sit on hold with the building department or chase down an engineer who won’t call back.
General Contractor Services in San Bernardino
General Contractor Services in San Bernardino means more than managing a single remodel. We run whole-home projects from roofline to backyard, including kitchen and bath remodels, room additions, ADU and prefab construction, exterior replacements, hardscaping, and fencing. For a 92404 homeowner near the wildland-urban interface, that scope includes ember-resistant venting and Class A roofing assemblies, not just a standard reroof.
A full roof replacement in San Bernardino runs $8,000 to $20,000 depending on pitch, square footage, and whether the city requires Class A fire-rated assemblies. Impact window installation ranges from $8,000 to $25,000 for a typical home. Those ranges reflect what we see in actual bids across the city not national averages from a pricing website.
Exterior wind-load compliance
Reroofs, additions, and window replacements in the Cajon Pass wind corridor need engineering calculations keyed to the city’s exposure categories. We submit those calculations with the permit application so plan review doesn’t stall.
ADU and prefab construction
Through our partnership network including Abodu and Dvele, we offer ADU construction as a single contract with one point of accountability. The city’s ADU review process has its own quirks and we handle those from the first submittal.
What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in San Bernardino
Material selection settles most of the friction in a remodel. We carry access to 50+ vetted industry brands, including Cambria quartz countertops, Wellborn cabinetry, and Caesarstone surfaces for kitchen and bath work. For San Bernardino homeowners, that means you choose from recognized names with documented wind and fire performance data rather than whatever’s on the shelf at a local supplier. If the city’s plan reviewer asks for a specific fire-rated roofing assembly or impact-rated window spec, we pull the manufacturer data and submit it with the plans.
See the difference
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After
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After
Before
AfterCommon General Contractor Problems We See in San Bernardino Homes
- Knob-and-tube wiring and unpermitted additions. Downtown and 92401 Craftsman homes frequently have original wiring that can’t stay in place once walls open. Unpermitted additions from the 1960s and 1970s show up at title transfer and have to be re-permitted before new work can proceed.
- Wind-load failures on additions and rooflines. The Cajon Pass funnels Santa Ana winds into the city at 100+ mph gusts. Additions framed without hurricane-rated ties and engineered shear connections fail plan review or, worse, fail after construction.
- Wildfire-adjacent brush zones in 92404 and 92407. Foothill properties sit in the wildland-urban interface where the city requires ember-resistant vents and Class A roofing. Standard materials won’t pass inspection and can void insurance coverage.
- Cracks from heat and drought cycles. Triple-digit summers stress concrete pours, stucco curing, and foundation movement. We see slab cracks and stucco fissures in mid-century tract homes that need structural evaluation before a remodel can begin.
Pricing for General Contractor in San Bernardino, CA
Here’s what we quote for major projects across San Bernardino right now:
| Project Type | San Bernardino Range |
|---|---|
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Roof Replacement | $8,000 – $20,000 |
| Impact Window Installation | $8,000 – $25,000 |
What moves the number: structural upgrades on older homes, wind-load engineering requirements, Class A fire-rated assembly specifications, and finish level. A cheap quote that omits engineering or fire-rated materials won’t pass plan review and the cost comes back double later. Our estimates are free, written, and line-itemed. Call (833) 467-7020 and we’ll walk the property in San Bernardino and give you a real number.
We Also Serve Cities Near San Bernardino
Alder Contractors works across the Inland Empire, including San Bernardino and its neighboring communities. We regularly take on projects in Muscoy, Highland, Loma Linda, and Rialto. If you’re planning a remodel, addition, or ADU in any of these cities, call (833) 467-7020 for a free estimate.
Serving San Bernardino, CA — Our Local Coverage Area
We’re based in the San Bernardino 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 San Bernardino
The city’s historical building department requires engineering calculations keyed to the Cajon Pass wind corridor, which in practice means designing for 110-mph gust exposure in exposed areas like 92404 and 92407. The specific rating depends on your parcel’s exposure category and whether you’re in the wildland-urban interface. We submit those calculations with your permit application so plan review doesn’t bounce the project back. Call (833) 467-7020 and we’ll check your address against the city’s current exposure maps.
Yes. Properties in the wildland-urban interface zones of 92404 and 92407 go through the city’s WUI plan review checklist, which requires Class A fire-rated roof assemblies, ember-resistant vents, and defensible-space documentation. These requirements come from the city of San Bernardino specifically, not the county, so a county permit won’t cover the work. We handle the WUI submittal as part of the permit package. Call (833) 467-7020 to confirm whether your property is in a WUI zone.
Your insurer can ask for proof that the work met the city’s wind-load and fire-resistance standards before paying a claim. Stamped inspection sign-offs, engineering calculations, and material compliance letters make that proof easy to provide. Without it, a denied or reduced claim after a Santa Ana wind event or brush fire is a real risk. We hand over the full documentation packet at project close.
A compliant San Bernardino roof quote includes wind-load engineering calculations, Class A fire-rated assembly specification if you’re in a WUI zone, ember-resistant vent replacement, and the city’s plan review and inspection fees. A cheap quote skips the engineering and fire-rated materials, then the job stalls at plan review or gets flagged during inspection. The real cost comes back higher than if you’d quoted it right the first time. Call (833) 467-7020 for a line-itemed quote that shows what’s actually included.
We can. Nelson Ibarra and our team have worked with San Bernardino’s plan reviewers and inspectors on additions, reroofs, ADUs, and remodels across 92401, 92404, and 92407. We know which details the city flags, which engineering letters they accept, and which inspection sequences cause delays. That experience means fewer plan review cycles and a faster path to final sign-off. Call (833) 467-7020 to talk about your specific project.
Written by Nelson Ibarra, Owner at Alder Contractors, serving San Bernardino since 2015.
Ready to get a real number for your project? Call (833) 467-7020 for a free written estimate. We’ll walk the property with you, talk through what the city will require, and give you a line-itemed quote you can actually compare.