San Diego County
Commercial Property Inspections in Ontario
Logistics core · airport industrial
Ontario is the center of gravity for Inland Empire logistics. Assessments here are dominated by large-footprint distribution: roof area measured in acres, dock equipment counts in the dozens, truck courts and trailer storage that carry as much capital exposure as the building itself.
What we inspect in Ontario
- Class A distribution from 300,000 sf to over 1 million sf with ESFR sprinklers and 36'+ clear
- Air-cargo-adjacent freight, forwarding and cold-storage facilities
- Older Holt and Guasti corridor manufacturing and rail-served industrial
- Regional and large-format retail around Ontario Mills
How a Ontario inspection runs
Every engagement starts with a scope call: asset type, square footage, building age, the lender's requirements and your closing date. We walk the property with the on-site manager where possible, document the roof, envelope, structure, mechanical, electrical, plumbing, site and life-safety systems, and photograph every deficiency with a location reference.
You receive the report in three to five business days. It includes an immediate repair table priced at current San Diego County contractor rates, a one to five year capital reserve schedule, remaining useful life estimates for major systems, and an executive summary your lender can read in two minutes.
Why local matters
Building stock, climate exposure and permit history differ across Southern California. Ontario has its own permitting history, jurisdiction requirements and construction eras, and knowing them keeps the report focused on the conditions that actually drive cost. We inspect commercial property only, so nothing in the report is borrowed from residential practice.
Ontario submarkets and building stock
The area surrounding Ontario International Airport holds air-cargo-adjacent distribution, freight forwarding and cold storage. Ontario Ranch and the Merrill and Mission corridors carry newer 300,000 sf to over 1 million sf Class A distribution with 36-foot-plus clear heights, ESFR sprinklers and heavy trailer parking. The older Holt Boulevard and Guasti area holds mid-century manufacturing, service commercial and rail-served industrial, and Ontario Mills anchors regional retail with large-format pads.
Local compliance angle
Warehouse Indirect Source Rule reporting now travels with the asset
South Coast AQMD Rule 2305, the Warehouse Actions and Investments to Reduce Emissions (WAIRE) Program, applies to warehouses of 100,000 sf or more in a single building and requires operators to earn annual WAIRE points or pay a mitigation fee, with annual reporting to the district. In Ontario, that captures most of the modern inventory. Buyers and lenders increasingly want the compliance position documented at diligence, alongside the physical items that actually accrue points — EV charging infrastructure, solar readiness and electrical service capacity — because retrofitting service capacity later is the expensive path. We record existing charging, panel capacity, solar readiness and roof structural notes so the WAIRE picture is grounded in what is physically there.
Reference: South Coast AQMD Rule 2305 (WAIRE Program)
How Ontario assignments typically run
Institutional and REIT ownership, large footprints, and roof area that governs the reserve schedule.
- Typical asset size: 100,000 sf to 1,000,000+ sf distribution
- Common scope: ASTM E2018 PCA, ASTM E1527 Phase I ESA and a dedicated roof inspection
- Roof method: drone imaging plus walked survey with core or moisture readings on aged membrane
- Report delivery: 3–5 business days; large multi-building portfolios scheduled in tranches
Services
Inspection services available in Ontario
Property Condition Assessment
Lender-ready PCA reports for acquisitions, refinancing and portfolio reviews, with immediate repair and capital reserve tables.
View scope
Phase 1 Environmental Site Assessment
Environmental site assessments that surface recognized environmental conditions before liability transfers to you.
View scope
Roof Inspections
Membrane, flashing, drainage and penetration evaluation with moisture readings and remaining-life estimates.
View scopeRelated
Related cities and services near Ontario
Neighboring submarkets
- Commercial property inspections in Rancho Cucamonga, CA
Business parks & Foothill retail
- Commercial property inspections in Fontana, CA
Distribution & legacy heavy industry
- Commercial property inspections in Corona, CA
91 corridor light industrial
- Commercial property inspections in San Bernardino, CA
Older commercial core · airport logistics
- Commercial property inspections across San Bernardino County
Inland Empire coverage
Services for Ontario property
- ASTM E2018 Property Condition Assessment for Ontario logistics core and airport industrial
ASTM E2018
- Phase 1 Environmental Site Assessment in Ontario
ASTM E1527
- Roof inspections for Ontario commercial buildings
Drone documented
- Building code consulting for Ontario permits and plan review
CBC · Title 24
- Lender field inspections on Ontario assets
Lender formats
- Drone and thermal roof imaging in Ontario
FAA Part 107
FAQ
Ontario commercial inspection questions
What does a commercial property inspection in Ontario cover?
A Ontario inspection follows ASTM E2018 and documents the roof, envelope, structure, mechanical, electrical, plumbing, site and life-safety systems, with every deficiency photographed and located. In Ontario, CA that most often means class A distribution from 300,000 sf to over 1 million sf with ESFR sprinklers and 36'+ clear; air-cargo-adjacent freight, forwarding and cold-storage facilities; older Holt and Guasti corridor manufacturing and rail-served industrial. You receive an immediate repair table, a capital reserve schedule and an executive summary your lender can read in two minutes.
How long does a Ontario inspection report take?
Most Ontario assignments deliver in three to five business days from the site walk. Scope and fee are usually confirmed the same day you call 619-473-2133, and rush delivery is available when a closing or loan deadline requires it.
Which local code or compliance issues affect commercial buildings in Ontario?
South Coast AQMD Rule 2305, the Warehouse Actions and Investments to Reduce Emissions (WAIRE) Program, applies to warehouses of 100,000 sf or more in a single building and requires operators to earn annual WAIRE points or pay a mitigation fee, with annual reporting to the district. In Ontario, that captures most of the modern inventory. Buyers and lenders increasingly want the compliance position documented at diligence, alongside the physical items that actually accrue points — EV charging infrastructure, solar readiness and electrical service capacity — because retrofitting service capacity later is the expensive path. We cite the applicable requirement in the report itself — reference: South Coast AQMD Rule 2305 (WAIRE Program).
Which Ontario submarkets and property types do you inspect?
The area surrounding Ontario International Airport holds air-cargo-adjacent distribution, freight forwarding and cold storage. Ontario Ranch and the Merrill and Mission corridors carry newer 300,000 sf to over 1 million sf Class A distribution with 36-foot-plus clear heights, ESFR sprinklers and heavy trailer parking. The older Holt Boulevard and Guasti area holds mid-century manufacturing, service commercial and rail-served industrial, and Ontario Mills anchors regional retail with large-format pads.
What does a typical Ontario engagement look like?
Institutional and REIT ownership, large footprints, and roof area that governs the reserve schedule. Typical asset size: 100,000 sf to 1,000,000+ sf distribution. Common scope: ASTM E2018 PCA, ASTM E1527 Phase I ESA and a dedicated roof inspection. Roof method: drone imaging plus walked survey with core or moisture readings on aged membrane. Report delivery: 3–5 business days; large multi-building portfolios scheduled in tranches.
Do you also inspect property near Ontario?
Yes. We inspect commercial property throughout San Bernardino County and the surrounding Southern California counties, including Rancho Cucamonga, Fontana, Corona. One inspector covers multi-property portfolios so the reporting stays consistent.
Request a quote
Request a Ontario inspection quote
Send the address, asset type and approximate square footage. We reply with scope and fee, usually the same business day.
619-473-2133
Mon–Fri 7:00am–6:00pm