─ Areas Served · San Bernardino County
One facilities partner. From Ontario logistics to the High Desert.
From the Ontario / Rancho Cucamonga office and logistics corridor to the foothill HOAs of Redlands and the High Desert distribution hubs of Victorville — OH Building Services keeps SB County properties running with W-2 crews stationed across the county.
- Emergency SLA
- <2h
- SB properties
- 65+
- Sq ft served
- 7.4M
- Local W-2 crew
- 28
─ The SB reality
Built for how San Bernardino County actually operates.
San Bernardino is the largest county in the lower 48, and the building stock reflects it: Class-A office and millions of sq ft of distribution in the Ontario / Rancho Cucamonga corridor, foothill HOAs from Redlands to Yucaipa, mountain communities at Lake Arrowhead and Big Bear, and rapidly expanding logistics in the High Desert. Each demands a different vendor playbook.
We staff SB County from three yards — Ontario, Fontana, and Victorville — so the West End and Central Valley see sub-60-minute dispatch and the High Desert stays inside 75. We carry High-Desert-rated equipment specs (extreme diurnal swings, dust intrusion, freeze-rated plumbing for Wrightwood and the mountain ZIPs) and our PMs work with city desks across Ontario, Rancho, San Bernardino, and the County unincorporated permit center.
Whether you're a logistics REIT in Ontario, an HOA portfolio in the Redlands foothills, or a hospitality flag at Big Bear — one program manager, one schedule, one invoice, every trade.
─ Most-requested in SB
The trades San Bernardino County property teams call us for first.
HVAC service & retrofit
Desert-rated rooftop units for Ontario logistics, freeze-rated for mountain communities.
Learn morePlumbing & leak response
Hard-water mitigation, freeze protection in mountain ZIPs, 24/7 leak response.
Learn moreJanitorial programs
Industrial day-porter, Class-A office programs, and HOA common-area cleaning.
Learn moreGrounds & landscape
QWEL-certified irrigation, AB-1572 turf conversions, foothill native landscape care.
Learn moreCapital projects & GC
Industrial roof recoats, parking-lot reseal, TI buildouts under one CSLB A & B license.
Learn moreRestoration & reconstruction
IICRC-certified water, fire, smoke, and mold response — including mountain communities.
Learn more─ Industries we serve in SB
From beachfront condos to industrial parks.
─ Coverage map
Every city in San Bernardino County. No corner uncovered.
West End
- Ontario
- Rancho Cucamonga
- Upland
- Chino
- Chino Hills
- Montclair
- Mt. Baldy
Central Valley
- Fontana
- Rialto
- Colton
- San Bernardino
- Highland
- Grand Terrace
- Bloomington
Foothill / Mountain
- Redlands
- Yucaipa
- Loma Linda
- Lake Arrowhead
- Big Bear Lake
- Crestline
- Running Springs
High Desert
- Victorville
- Hesperia
- Apple Valley
- Adelanto
- Phelan
- Oak Hills
- Wrightwood
East Desert
- Barstow
- Yucca Valley
- Twentynine Palms
- Joshua Tree
- Needles
Don't see your city? We cover every ZIP in San Bernardino County. Call us.
<2-hour emergency arrival
24/7 dispatch with regional crews stationed inside San Bernardino County — water, fire, sewage, electrical, lockout.
Local crews, local trucks
W-2 employees who live and work in San Bernardino County. Stocked vans means most jobs done same day, not scheduled out.
One PM for your portfolio
Whether you have one building in Irvine or twelve from San Clemente to Brea — one program manager, one invoice.
"Our High Desert distribution center had constant heat-related rooftop failures every July. OH did a full equipment audit, retrofitted to desert-rated units, and we've gone two summers without a thermal-induced outage."
─ Nearby coverage
Also serving the counties next door.
─ FAQs
Common questions from SB property teams.
Don't see yours? Call us — we like hard questions.
(888) 303-5551Yes. We dispatch from Victorville for the High Desert (Victorville, Hesperia, Apple Valley, Adelanto, Barstow) and reach Lake Arrowhead and Big Bear from our Fontana hub. Sub-75-minute response to most desert ZIPs, 24/7.
Yes. Our mountain crews carry freeze-rated materials (heat trace, insulated PEX, frost-proof hose bibs) and we offer pre-winter PM walks for properties at Lake Arrowhead, Big Bear, Wrightwood, and Crestline.
W-2 employees who live across San Bernardino County. Background-checked, drug-screened, OSHA-10 minimum. Specialty subs (elevator, fire-alarm cert) are vetted and disclosed on every proposal.
Sub-45-minute typical from our Ontario yard for the West End. Sub-60-minute from Fontana for San Bernardino and Redlands. Sub-75-minute to the High Desert from Victorville.
CSLB Class A and B, C-10, C-20, C-36, IICRC firm certification, DIR registration. $5M general liability, $5M auto, statutory workers' comp, $1M umbrella. License numbers on every proposal.
Yes — that's a core market for us. One PM for industrial portfolios spanning Ontario, Rancho, Chino, Fontana, and Rialto. Property-level dashboards and quarterly capex reports.
The same crew, every visit — across all of San Bernardino County.
Free walkthrough, written findings, custom proposal — all within a week.