Updated: Jun 15, 2026
Location and Projects
Address
PO Box 274, Elk, WA, 99009
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Imperial Piping & Contrng Plumber
Imperial Piping & Contrng Llc, Elk, Po Box 274, Elk, WA (Owned by: Cowin, Charles Toby) holds a Plumbing Contractor, Journey Level license and 3 other licenses according to the Tukwila license board.
Their BuildZoom score of 111 ranks in the top 4% of 128,670 Washington licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Imperial Piping & Contrng Llc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Imperial Piping & Contrng Llc Services
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Imperial Piping & Contrng Llc Contact Information
Phone Number: (509) 999-8792
Edit
Address: PO Box 274, Elk, WA 99009
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Imperial Piping & Contrng Llc Elk
Quality
111
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Imperial Piping & Contrng Llc has a BuildZoom score of 111, which places them above 96% of 128,670 contractors in Washington.
Activity
|
1 project
|
2026 |
|
19 projects
|
2025 |
|
19 projects
|
2024 |
|
9 projects
|
2023 |
Our building permit records indicate that Imperial Piping & Contrng Llc has worked on at least
48.0 projects over the past 3 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
|
38 projects
|
New Constructions |
|
20 projects
|
Plumbing projects |
Analyzing permits over the last 4 years shows that Imperial Piping & Contrng Llc mostly works on
new construction
and plumbing project
projects.
Pricing
|
19 projects
|
< $5k |
|
24 projects
|
$5k-$20k |
The typical size of their permits is approximately $5,575. This graph shows the distribution of these job values.
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 Imperial Piping & Contrng Llc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Single-family dwelling w/garage electric (gsl 43#)
Valuation:
$5,159
Permit #:
E-B2408134
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Single-family dwelling w/garage electric (gsl 50#)
Valuation:
$3,157
Permit #:
E-B2503311
Status:
issued
Fee:
$1,353
Permit Type:
N/A
Building Type:
Residential
Single-family dwelling w/garage and photovoltaic roof mounted solar gas (gsl 43#)
Valuation:
$13,383
Permit #:
E-B2501025
Status:
issued
Fee:
$3,664
Permit Type:
N/A
Building Type:
Residential
Wildfire single family dwelling w/garage electrical w/roof mounted solar installation 6 modules 2.40kw (gsl 43#)
Valuation:
$6,761
Permit #:
E-B2309671
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Single-family dwelling w/right facing garage electric w/roof mounted solar array 6 modules 2.40kw (gsl 70#)
Valuation:
$493
Permit #:
E-B2400612
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Wildfire single family dwelling w/garage electric w/roof mounted solar 6 modules 2.40kw (gsl 43#)
Valuation:
$4,620
Permit #:
E-B2400012
Status:
issued
Fee:
$1,981
Permit Type:
N/A
Building Type:
Residential
Single-family dwelling w/garage and roof mounted solar installation 8 modules electric (gsl 70#)
Valuation:
$1,232
Permit #:
E-B2403965
Status:
complete
Fee:
$0
Permit Type:
N/A
Building Type:
Residential
Single family residence w/garage
Valuation:
$16,001
Permit #:
E-B2309076
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Residential dwelling/garage - one single family dwelling
2020-11-10
Residence w/garage - gas (gsl 43#)
Valuation:
$434,173
Permit #:
B1903371
Status:
complete
Fee:
$2,343
Permit Type:
N/A
Building Type:
Residential
Project plan revision to permit e-b2401349: addition two 2x4 windows to primary bedroom
Valuation:
N/A
Permit #:
B2400169
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential dwelling/garage - one single family dwelling
2020-09-24
Residence w/garage - gas (gsl 65#)
Valuation:
$259,884
Permit #:
B2000188
Status:
complete
Fee:
$2,402
Permit Type:
N/A
Building Type:
Residential
Wildfire single-family dwelling w/left facing garage electric (gsl 70#)
Valuation:
$5,344
Permit #:
E-B2400913
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Single-family dwelling w/garage and roof mounted solar electric (gsl 43#)
Valuation:
$6,622
Permit #:
E-B2503173
Status:
issued
Fee:
$1,873
Permit Type:
N/A
Building Type:
Residential
Single family residence w/garage
Valuation:
$5,975
Permit #:
E-B2301063
Status:
applied
Fee:
$2,347
Permit Type:
N/A
Building Type:
Residential
Single family residence w/garage
Valuation:
$4,836
Permit #:
E-B2300965
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Single family residence w/garage
Valuation:
$8,516
Permit #:
E-B2300900
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Single-family dwelling w/garage electric (gsl 43#)
Valuation:
$4,543
Permit #:
E-B2405156
Status:
complete
Fee:
$0
Permit Type:
N/A
Building Type:
Residential
Accessory dwelling unit w/garage electric (gsl 50#)
Valuation:
$4,851
Permit #:
E-B2401810
Status:
complete
Fee:
$0
Permit Type:
N/A
Building Type:
Residential
Single-family dwelling w/garage electric (gsl 50#)
Valuation:
$12,135
Permit #:
E-B2401532
Status:
complete
Fee:
$0
Permit Type:
N/A
Building Type:
Residential
Accessory dwelling unit w/garage electric (gsl 50#)
Valuation:
$1,232
Permit #:
E-B2400738
Status:
expired
Fee:
$1,650
Permit Type:
N/A
Building Type:
Residential
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Imperial Piping & Contrng Llc Reviews
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Verified License
BuildZoom confirmed this contractor's license
Imperial Piping & Contrng Llc License info
License Not Verified
| License # | IMPERPC784KC |
| Status | Active |
| City | Tukwila |
| Type | Plumbing Contractor, Journey Level |
| Class | Limited Liability Company |
| Business Type | Limited Liability Company |
- When BuildZoom last verified this license, it had an expiration date of May, 2026. Check the current license status of Imperial Piping & Contrng Llc with the The City of Tukwila, WA
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | IMPERPC784KC |
| Status | Active |
| State | Washington |
| Type | Plumbing Contractor, Plumbing Contractor |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Imperial Piping & Contrng Llc at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | IMPERPC852L6 |
| Status | Inactive |
| City | Tukwila |
| Type | Construction Contractor, General |
| Class | Limited Liability Company |
| Business Type | Limited Liability Company |
- According to the The City of Tukwila, WA, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Imperial Piping & Contrng Llc at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | IMPERPC852L6 |
| Status | Inactive |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Limited Liability Company |
- According to the Washington State Department of Labor & Industries, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Imperial Piping & Contrng Llc at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
111
BuildZoom Score
Insured
| Insurer | Ohio Security Ins Co |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Lexon Ins Co |
| Bond Value | $12,000 |
87
Permits
- Building permit records show that Imperial Piping & Contrng Llc has worked on 87 permitted projects.
Imperial Piping & Contrng Llc Employees
CC
Charles Cowin
Partner/Member
CT
Cowin, Charles Toby
Owner