Safety Incidents OSHA Severe Injury Reports · 2015–2025
5,189,214Inspections Most recent open 2026-07-16 Last loaded 2026-07-20

ONTARIO, CA —

OSHA Inspection: FOURSQUARE BUILDERS INC

Unprogrammed Related inspection · Safety discipline

At a glance

On , OSHA opened an unprogrammed Related safety inspection of FOURSQUARE BUILDERS INC in 909 SOUTH CUCAMONGA AVENUE, ONTARIO, CA 91761 (NAICS 236210). OSHA activity number 125943365.

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Where did this inspection happen?

Establishment
FOURSQUARE BUILDERS INC
Site address
909 SOUTH CUCAMONGA AVENUE
City
ONTARIO
State
CA
ZIP
91761
Mailing
22721 CASCADE DRIVE, CANYON LAKE, CA 92587

What kind of inspection was it?

Inspection type
Unprogrammed Related (G)
Scope
Partial (B)
Discipline
Safety
Advance notice
No
Union status
N

When did the case open and close?

Opened
Closing conference
Case closed
Last modified
Data loaded

Establishment context

NAICS code
236210
SIC code (legacy)
1541
Employees
1
Ownership type
A
Industry flags
Construction safety.

Citations

No citations on file for this inspection. OSHA's citation feed is backfilled in rolling windows; this inspection may have been closed without violations, or its citation rows may not have been ingested yet.

More inspections in this industry (NAICS 236210)

More inspections in CA

Source

This record is reproduced from the U.S. Department of Labor Open Data API (OSHA inspection dataset). The original IMIS detail view is available at OSHA's Establishment Search for activity number 125943365.