Portenstein M T
Oak View · Ventura County · CA
Verified
Bestopedia verdict
California’s contractor board lists Portenstein M T with a license standing of CLEAR. A contractor bond is on file, and workers’ compensation coverage is current.
- License standing
- 25 / 25
- Clean record
- 15 / 15
- Track record
- 24.6 / 30
- License continuity
- 5 / 10
- Workers' comp
- 9 / 12
- Contractor bond
- 8 / 8
The verified record
- CSLB license
- #490834 verify on CSLB ↗
- Classifications
- B
- Years licensed
- 40.2 years since 05/01/1986
- Contractor bond
- $25,000 Western Surety Company
- Workers’ comp
- Current
- Business type
- Sole Owner
- Qualifying principal
- Matthew Thomas Portenstein
- Address of record
- PO Box 472, Oak View, CA 93022
Frequently Asked Questions
Is Portenstein M T a licensed General Contractor contractor in California?
Yes. Portenstein M T holds California CSLB contractor license #490834 with a B (General Building) classification. Current CSLB status: CLEAR (as of July 2026).
What work is Portenstein M T licensed to perform?
Portenstein M T is licensed for B (General Building).
Is Portenstein M T bonded?
Yes. Portenstein M T carries contractor's bond #66344184 for $25,000 through Western Surety Company.
Does Portenstein M T carry workers' compensation insurance?
CSLB records list the workers' compensation status for Portenstein M T as Exempt.
How long has Portenstein M T held its contractor license?
Portenstein M T has held California contractor license #490834 since 05/01/1986, approximately 40 years (as of July 2026).
Where is Portenstein M T located?
Portenstein M T is based in Oak View, Ventura County, CA 93022.