Updated: May 27, 2026
Location and Projects
Address
2415 I ST NE, Auburn, WA, 98002
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Diamond Excavation LLC
Diamond Excavation LLC, 2415 I St NE, Auburn, WA (Owned by: Onika, Andrii) holds a Construction Contractor, General license and 1 other license according to the Tukwila license board.
Their BuildZoom score of 103 ranks in the top 10% of 128,670 Washington licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Diamond Excavation LLC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Diamond Excavation LLC Contact Information
Phone Number: (253) 258-9828
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Address: 2415 I ST NE, Auburn, WA 98002
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Diamond Excavation LLC Auburn
Quality
103
90th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Diamond Excavation LLC has a BuildZoom score of 103, which places them above 90% of 128,670 contractors in Washington.
Activity
|
4 projects
|
2025 |
|
3 projects
|
2024 |
Our building permit records indicate that Diamond Excavation LLC has worked on at least
7.0 projects over the past 2 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
5 projects
|
New Constructions |
Analyzing permits over the last 4 years shows that Diamond Excavation LLC mostly works on
new construction
projects.
Pricing
|
1 project
|
$5k-$20k |
|
2 projects
|
$50k-$100k |
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
Building Permits by Diamond Excavation LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
5440 kirkwood storm footing drain and sanitary to new combined side sewer in kirkwood pl n. per plan #6917512-cn for 1 single family residence 1 aadu and 1 dadu. osm required. separate sdot row permit required
Valuation:
N/A
Permit #:
7074560-SS
Status:
issued
Fee:
$1,030
Permit Type:
New
Building Type:
Single family/duplex
106 n 80th drainage footing drains and sanitary to existing combined side sewer (pe eval/cert required.) per permit #7036494-cn for new sfr+aadu+dadu. osm: infiltration drywell
Valuation:
$70,000
Permit #:
7090028-SS
Status:
issued
Fee:
$750
Permit Type:
New
Building Type:
Single family/duplex
Storm and sanitary to existing combined side sewer footing drain to drywell. per plan # 6889926-cn for 1 single family residence and 1 aadu existing single family residence converted to dadu. drywell and permeable pavement required for osm pe eval/cert required
Valuation:
N/A
Permit #:
7020786-SS
Status:
issued
Fee:
$814
Permit Type:
New
Building Type:
Single family/duplex
Storm and footing drain to existing service drain sanitary to existing side sewer. per plan #6927528-cn for 7 unit townhouse building. trees and bioretention required for osm pe eval/cert required
Valuation:
$72,000
Permit #:
7048881-SS
Status:
issued
Fee:
$750
Permit Type:
New
Building Type:
Multifamily
New sanitary for new dadu to existing onsite sanitary side sewer. related building permit for new dadu under 7018726-cn. drainage not included. drainage review not required
Valuation:
$17,000
Permit #:
7048878-SS
Status:
issued
Fee:
$375
Permit Type:
None
Building Type:
Single family/duplex
Site dev for 2 detached townhomes 8 units-mb1l w demolish
Valuation:
N/A
Permit #:
DEV22-1007
Status:
issued
Fee:
$15,483
Permit Type:
Multiple buildings
Building Type:
N/A
Sanitary sewer connect to existing side sewer
Valuation:
N/A
Permit #:
25 104315 UA
Status:
issued
Fee:
$690
Permit Type:
N/A
Building Type:
N/A
Cap off for residential demolish
Valuation:
N/A
Permit #:
WWU25-0483
Status:
complete
Fee:
$520
Permit Type:
Cap
Building Type:
N/A
Frontage coring utilities for 2 detached twn bldgs-mbil
Valuation:
N/A
Permit #:
ROW22-1009
Status:
issued
Fee:
$19,530
Permit Type:
Frontage improvem...
Building Type:
N/A
Back building - 3 new twn units-mbil
Valuation:
N/A
Permit #:
WWU22-1148
Status:
issued
Fee:
$6,929
Permit Type:
New connection
Building Type:
N/A
Front building - 5 new twn units-mbil
Valuation:
N/A
Permit #:
WWU22-1014
Status:
issued
Fee:
$8,382
Permit Type:
New connection
Building Type:
N/A
Two new detached twn bldgs 8 units coring in row-mbil
Valuation:
N/A
Permit #:
WWU22-1174
Status:
issued
Fee:
$315
Permit Type:
Core main
Building Type:
N/A
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Diamond Excavation LLC Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Diamond Excavation LLC License info
Verified License
| License # | DIAMOEL764LD |
| Status | Active |
| City | Tukwila |
| Type | Construction Contractor, General |
| Class | Limited Liability Company |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Diamond Excavation LLC at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | DIAMOEL764LD |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Diamond Excavation LLC at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
103
BuildZoom Score
Insured
| Insurer | Atlantic Cas Ins Co |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Travelers Cas & Surety Co Of America |
| Bond Value | $12,000 |
7
Permits
- Building permit records show that Diamond Excavation LLC has worked on 7 permitted projects.
Diamond Excavation LLC Employees
AO
Andrii Onika
Partner/Member
BO
Bohdan Onika
Partner/Member
OA
Onika, Andrii
Owner