Location and Projects
Preferred Firestopping Site Work Contractor
Furnish and install through penetration firestop systems that are produced to resist the spread of fire, resist passage of smoke and other gasses, and maintain the original fire resistance rating of assembly penetrated, including… Mechanical, Plumbing, Electrical (including all low-voltage and fire-alarm penetrations as well as fire rated putty pad outlet box protection as necessary per manufactures recommendations), and Fire-Sprinkler Penetrations through fire rated walls, floors and floor to ceiling assemblies.
From BuildZoom: Preferred Firestopping Inc, 1691 Jenks Dr, Corona, CA (Owned by: Charles Steinhaus ) holds a Insulation And Acoustical, Firestopping, Synthetic Products license and 2 other licenses according to the California license board.
Their BuildZoom score of 92 ranks in the top 32% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Preferred Firestopping Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Preferred Firestopping Inc Services
Preferred Firestopping Inc Contact Information
Building Permits by Preferred Firestopping Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Preferred Firestopping Inc Reviews
Hiring a contractor?
Preferred Firestopping Inc License info
Verified License
| License # | 824373 |
| Status | Active |
| State | California |
| Type | Insulation And Acoustical, Firestopping, Synthetic Products |
| Business Type | Corporation |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Preferred Firestopping Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 965711 |
| Status | Active |
| State | California |
| Type | Insulation And Acoustical, Building Moving, Demolition, Synthetic Products, Firestopping |
| Business Type | Corporation |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Preferred Firestopping Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 787009 |
| Status | Inactive |
| State | California |
| Type | Insulation And Acoustical, Building Moving, Demolition |
| Business Type | Corporation |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Preferred Firestopping Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
92
BuildZoom Score
Bonded
| Bonded Agent | Western Surety Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Berkshire Hathaway Homestate Insurance Company |