Updated: Jun 09, 2026
Location and Projects
Address
Milwaukie, OR, 97222
Use our bidding system to
request a quote
Cornerstone Excavation LLC
Cornerstone Excavation LLC, Milwaukie, OR holds a Plumbing license according to the Oregon license board.
Their BuildZoom score of 90 indicates that they are licensed or registered but we do not have additional information about them.
Their license was verified as active when we last checked. If you are thinking of hiring Cornerstone Excavation LLC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Cornerstone Excavation LLC Contact Information
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
Building Permits by Cornerstone Excavation LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Replace sewer line from clean out to right of way. this permit for on property only
Valuation:
N/A
Permit #:
2023-014238-000-00-PT
Status:
final
Fee:
N/A
Permit Type:
Addition/alterati...
Building Type:
N/A
Plumbing (non-residential) addition/alteration/repair
2023-04-14
Clackamas community college - replace belly in existing sewer line
Valuation:
N/A
Permit #:
PLMC23-0015
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Sewer connection to house - appox 5 ft
Valuation:
N/A
Permit #:
P0276322
Status:
final
Fee:
$162
Permit Type:
N/A
Building Type:
N/A
Similar Contractors See more
License # PB1499
Oregon City, OR
120
BZ Score
$386K
Avg Project
-
Projects
License # PB1537
Oregon City, OR
124
BZ Score
$359K
Avg Project
-
Projects
Cornerstone Excavation LLC Reviews
BuildZoom hasn't received any reviews for Cornerstone Excavation LLC. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Cornerstone Excavation LLC License info
Verified License
| License # | PB2774 |
| Status | Active |
| State | Oregon |
| Type | Plumbing |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Cornerstone Excavation LLC at the Oregon Building Codes Division.
This is a sample of licensing data; click here to access a complete history.