Updated: May 26, 2026
Location and Projects
Address
18519 3RD AVE NE, Arlington, WA, 98223
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Mainstream plumbing LLC
Mainstream plumbing LLC, 18519-3 Rd Ave NE, Arlington, WA (Owned by: Wenzel, Corey A) holds a Electrical Contractor, General license and 18 other licenses according to the Tukwila license board.
Their BuildZoom score of 110 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 Mainstream plumbing LLC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Mainstream plumbing LLC Services
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Mainstream plumbing LLC Contact Information
Phone Number: (360) 588-2227
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Address: 18519 3RD AVE NE, Arlington, WA 98223
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Mainstream plumbing LLC Arlington
Quality
110
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Mainstream plumbing LLC has a BuildZoom score of 110, which places them above 96% of 128,670 contractors in Washington.
Activity
|
6 projects
|
2025 |
|
29 projects
|
2024 |
|
26 projects
|
2023 |
Our building permit records indicate that Mainstream plumbing LLC has worked on at least
61.0 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
|
7 projects
|
New Constructions |
|
30 projects
|
Plumbing projects |
Analyzing permits over the last 4 years shows that Mainstream plumbing LLC mostly works on
plumbing project
and new construction
projects.
Pricing
|
15 projects
|
< $5k |
|
9 projects
|
$5k-$20k |
|
1 project
|
$20k-$50k |
The typical size of their permits is approximately $3,715. 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 Mainstream plumbing LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Type: mechanical single family class: alteration to structure or system, , ved: heat pump and air handler install(esf23-03149)
Valuation:
N/A
Permit #:
MSF23-02930
Status:
final
Fee:
$139
Permit Type:
N/A
Building Type:
N/A
Type: mechanical single family class: alteration to structure or system, , ved: heat pump and air handler install(esf23-03149)
Valuation:
N/A
Permit #:
MSF23-02930
Status:
approved
Fee:
$139
Permit Type:
N/A
Building Type:
N/A
Type: electrical single family class: alteration to structure or system, , colahan: installing (2) receptacle circuits
Valuation:
N/A
Permit #:
ESF23-04401
Status:
final
Fee:
$336
Permit Type:
N/A
Building Type:
N/A
Type: electrical single family class: alteration to structure or system, , ved (msf23-02930)- (2)hvac equipment - outside
Valuation:
N/A
Permit #:
ESF23-03149
Status:
final
Fee:
$276
Permit Type:
N/A
Building Type:
N/A
Evcc - jcrc building - replace air handler and addition heat pump
Valuation:
N/A
Permit #:
M2305-078
Status:
canceled
Fee:
$179
Permit Type:
Commercial mechan...
Building Type:
N/A
Type: mechanical single family class: replacement, , murphy: (1)furnace; (1)heat pump
Valuation:
N/A
Permit #:
MSF24-02486
Status:
final
Fee:
$145
Permit Type:
N/A
Building Type:
N/A
Lakewood commons - detached condo - mechanical
Valuation:
$14,142
Permit #:
OL23-1296
Status:
final
Fee:
$90
Permit Type:
Mechanical
Building Type:
N/A
Lakewood commons - detached condo - electrical
Valuation:
N/A
Permit #:
OL23-1294
Status:
final
Fee:
$50
Permit Type:
Electrical
Building Type:
N/A
Fan flood light dual purpose breaker/recepticle - electrical
Valuation:
$1,338
Permit #:
OL25-1235
Status:
issued
Fee:
$118
Permit Type:
Single family
Building Type:
N/A
Northpointe div 6 lot 9 - electrical
Valuation:
$1,600
Permit #:
OL23-0644
Status:
final
Fee:
$50
Permit Type:
Electrical
Building Type:
N/A
Replace 5 knob and tube circuits with up to code arc fault
Valuation:
N/A
Permit #:
E2404-053
Status:
final
Fee:
$205
Permit Type:
Standard electric...
Building Type:
N/A
Ol mechanical residential
6804 77th Ave NE, Snohomish, WA, 98290
2023-04-07
New furnace and heat pump
Valuation:
$14,000
Permit #:
OL23-0747
Status:
final
Fee:
$90
Permit Type:
Mechanical
Building Type:
N/A
Install back flow preventer for coffee area in main hall
Valuation:
N/A
Permit #:
22104251KP
Status:
final
Fee:
$342
Permit Type:
N/A
Building Type:
N/A
Evcc - jcrc building air conditioning disconnect outlet for condensate pump
Valuation:
N/A
Permit #:
E2307-036
Status:
final
Fee:
$172
Permit Type:
Standard electric...
Building Type:
N/A
1 shower stall in existing single family residence
Valuation:
N/A
Permit #:
24-2135
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Install heat pump - mechanical
Valuation:
$7,100
Permit #:
OL24-0590
Status:
final
Fee:
$141
Permit Type:
Residential
Building Type:
N/A
No Description Available
Valuation:
$5,355
Permit #:
OL24-0354
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
$5,355
Permit #:
OL24-0351
Status:
final
Fee:
N/A
Permit Type:
Residential
Building Type:
N/A
Install air conditioning disconnect - electrical
Valuation:
$980
Permit #:
OL24-0591
Status:
final
Fee:
$115
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
OL24-0132
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Mainstream plumbing LLC License info
Verified License
| License # | DAPPEE*793PN |
| Status | Active |
| City | Tukwila |
| Type | Electrical 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 Mainstream plumbing 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 # | DAPPEP*770C2 |
| Status | Active |
| City | Tukwila |
| Type | Plumbing Contractor, Journey Level |
| 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 Mainstream plumbing 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 # | DAPPEP*764MQ |
| Status | Active |
| City | Marysville |
| Type | Contractor |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Mainstream plumbing LLC at the The City of Marysville, Washington.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | DAPPEE*793PN |
| Status | Active |
| State | Washington |
| Type | Electrical Contractor, Electrical Contractor |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Mainstream plumbing 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 # | MAINSPL798O7 |
| Status | Inactive |
| City | Tukwila |
| Type | Electrical 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 Mainstream plumbing 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 # | MAINSPL814K8 |
| 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 Mainstream plumbing 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 # | DAPPEHA808RQ |
| 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 Mainstream plumbing 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 # | DAPPEP*764MQ |
| Status | Inactive |
| City | Tukwila |
| Type | Plumbing Contractor, Residential |
| 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 Mainstream plumbing 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 # | DAPPEP*807LC |
| Status | Inactive |
| City | Tukwila |
| Type | Construction Contractor, Plumbing |
| 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 Mainstream plumbing 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 # | DAPPEE*793PN |
| Status | Inactive |
| City | Marysville |
| Type | Contractor |
| Business Type | Limited Liability Company |
- According to the The City of Marysville, Washington, 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 Mainstream plumbing LLC at the The City of Marysville, Washington.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | DAPPEHA808RQ |
| Status | Inactive |
| City | Marysville |
| Type | Contractor |
| Business Type | Limited Liability Company |
- According to the The City of Marysville, Washington, 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 Mainstream plumbing LLC at the The City of Marysville, Washington.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | DAPPEP*770C2 |
| Status | Inactive |
| City | Marysville |
| Type | Contractor |
| Business Type | Limited Liability Company |
- According to the The City of Marysville, Washington, 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 Mainstream plumbing LLC at the The City of Marysville, Washington.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | DAPPEP*807LC |
| Status | Inactive |
| City | Marysville |
| Type | Contractor |
| Business Type | Limited Liability Company |
- According to the The City of Marysville, Washington, 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 Mainstream plumbing LLC at the The City of Marysville, Washington.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | DAPPEP*770C2 |
| Status | Inactive |
| State | Washington |
| Type | Plumbing Contractor, Plumbing 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 Mainstream plumbing 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 # | DAPPEP*764MQ |
| Status | Inactive |
| State | Washington |
| Type | Plumbing Contractor, Plumbing 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 Mainstream plumbing 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 # | MAINSPL798O7 |
| Status | Inactive |
| State | Washington |
| Type | Electrical Contractor, Electrical 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 Mainstream plumbing 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 # | DAPPEHA808RQ |
| 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 Mainstream plumbing 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 # | DAPPEP*807LC |
| 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 Mainstream plumbing 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 # | MAINSPL814K8 |
| 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 Mainstream plumbing LLC at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
110
BuildZoom Score
Insured
| Insurer | State Farm Fire & Cas Co |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Wesco Insurance Co |
| Bond Value | $12,000 |
64
Permits
- Building permit records show that Mainstream plumbing LLC has worked on 64 permitted projects.
Mainstream plumbing LLC Employees
CB
Colton Brooks
Partner/Member
CW
Corey Wenzel
Partner/Member
MW
Morgan Wenzel
Partner/Member
WA
Wenzel, Corey A
Owner
WA
Wenzel, Corey Allen
Owner