About Us

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American Empire Fire Stop, Inc. is a specialty passive fire protection and fireproofing contractor based in Ontario, California. Founded on over 30 years of construction industry experience, our company has become a recognized name among general contractors, developers, and MEP trades across Southern California.

We specialize exclusively in fire protection, fireproofing, and related firestopping services — which means every technician we dispatch is trained in UL-listed assembly installation, penetration sealing, and code documentation. As a result, this focused expertise allows us to deliver a level of precision that general subcontractors simply cannot match.

Our fire protection project portfolio spans residential homes, mid-rise multifamily, commercial office buildings, healthcare campuses, and industrial facilities. We collaborate directly with architects, structural engineers, MEP engineers, and contractors across all trades to coordinate sequencing, maintain inspection readiness, and deliver compliant close-out documentation.

We bring the same standard of timeliness, craftsmanship, and accountability to every fire protection and fireproofing project — from a single penetration restoration to a full building buildout.