Portenstein M T
Verified against CSLB on · View on CSLB
License details
- License number
- 490834
- Classifications
- License term on file
- May 1, 1986 – July 31, 2026
Business
- (909) 725 9743 (CSLB public record)
- PO BOX 472, Oak View, CA 93022Ventura County
Are you Portenstein M T? Claim this listing to manage it.
Claim this listingRequest a free quote
Tell us about your project and we'll connect you with licensed, verified California contractors.
Other General Building contractors in Oak View
Tepas Construction Inc
B · Oak View, CA
Verified June 17, 2026 · Bonded
Davidson Donald Construction
B · Oak View, CA
Verified June 17, 2026 · Bonded
Cebuana Construction Inc
B · Oak View, CA
Verified June 17, 2026 · Bonded
Channel Builders Inc
B · Oak View, CA
Verified June 17, 2026 · Bonded
Deyoung Construction LLC
B · Oak View, CA
Verified June 17, 2026 · Bonded
Small Town Builder
B · Oak View, CA
Verified June 17, 2026 · Bonded
What to check next
Frequently asked questions
Is Portenstein M T licensed in California?
Yes. Portenstein M T holds an active California state contractor license (CSLB #490834), verified against the CSLB public record on June 17, 2026.
What is Portenstein M T's CSLB license number?
Portenstein M T's California contractor license number is 490834. Look that number up with the CSLB "Check a License" tool to confirm its current status against the public record yourself.
What kind of work is Portenstein M T licensed for?
Portenstein M T is classified under General Building (B) by the CSLB.
How do I verify Portenstein M T's license myself?
Look up license #490834 with the CSLB "Check a License" tool and compare the status, bond, and workers' compensation details against what's shown on this page. This page reflects the CSLB public record as of June 17, 2026.
Verify it yourself: How to verify a California contractor license · Look up #490834 on CSLB
See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.