Updated: Apr 22, 2026
Location and Projects
Address
PO BOX 472, Oak View, CA, 93022
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MT Portenstein Construction
MT Portenstein, Oak Vw, Po Box 472, Oak View, CA (Owned by: Matthew Thomas Portenstein) holds a General Building license 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 MT Portenstein, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
MT Portenstein Services
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MT Portenstein Contact Information
Phone Number: (909) 725-9743
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Address: PO BOX 472, Oak View, CA 93022
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Remove display cases, drop ceilings, carpet paneling and drywall ceilings and walls.
Valuation:
$3,000
Permit #:
BAACN-2012-10-06416
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replacement of some fixtures and upgrade service meter.
Valuation:
N/A
Permit #:
BELEC-2016-07-03573
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
2 branch circuits, one for fau and one for condenser.
Valuation:
N/A
Permit #:
BELEC-2014-07-04636
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New split heating and a/c system with new ducts.
Valuation:
N/A
Permit #:
BMECH-2014-07-04635
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Relocate non-bearing parititions to create accessible restroom.
Valuation:
$12,000
Permit #:
BAACN-2013-01-00287
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New 100 amp subpanel, new lights, switches, receptacles and wiring.
Valuation:
N/A
Permit #:
BELEC-2013-01-00289
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
#203, replace 9 windows to interior atrium area. maximum u-factor = 0.32 and maximum shgc=0.25
Valuation:
$5,000
Permit #:
BAACR-2016-07-03572
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Create accessible restroom and new gas line for fau.
Valuation:
N/A
Permit #:
BPLSW-2013-01-00291
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Gas line.
Valuation:
N/A
Permit #:
BPLSW-2014-01-00638
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New fau and ducts/registers.
Valuation:
N/A
Permit #:
BMECH-2013-01-00290
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New gas line. unit #201.
Valuation:
N/A
Permit #:
BPLSW-2016-07-03574
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Verified License
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MT Portenstein License info
Verified License
| License # | 490834 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for MT Portenstein 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 | Suretec Indemnity Company |
| Bond Value | $15,000 |
MT Portenstein Employees
MP
Matthew Thomas Portenstein
Owner