Updated: Apr 19, 2026
Location and Projects
Address
1453 DIERINGER AVE, Buckley, WA, 98321
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Courson Const & Mechanical LLC
Courson Const & Mechanical LLC, 1453 Dieringer Ave, Buckley, WA (Owned by: Courson, Robby Lee) holds a Construction Contractor, General license and 1 other license according to the Tukwila license board.
Their BuildZoom score of 107 ranks in the top 6% of 128,670 Washington licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Courson Const & Mechanical LLC, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Courson Const & Mechanical LLC Services
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Courson Const & Mechanical LLC Contact Information
Phone Number: (206) 331-1713
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Address: 1453 DIERINGER AVE, Buckley, WA 98321
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Courson Const & Mechanical LLC Buckley
Quality
107
94th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Courson Const & Mechanical LLC has a BuildZoom score of 107, which places them above 94% of 128,670 contractors in Washington.
Activity
|
11 projects
|
2025 |
|
3 projects
|
2024 |
|
6 projects
|
2023 |
Our building permit records indicate that Courson Const & Mechanical LLC has worked on at least
20.0 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
|
14 projects
|
HVAC projects |
|
5 projects
|
Mechanical projects |
Analyzing permits over the last 4 years shows that Courson Const & Mechanical LLC mostly works on
hvac project
and mechanical project
projects.
Pricing
|
1 project
|
< $5k |
|
8 projects
|
$5k-$20k |
|
2 projects
|
$20k-$50k |
The typical size of their permits is approximately $10,000. 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 Courson Const & Mechanical LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Type: mechanical single family class: addition to structure, , mann (bsf22-06101): installation of mitsubishi minisplit system ducting bathroom and laundry fans range hood fresh air make up gas fireplace and dryer venting. heat pump will be located in back yard with in proper property line off sets
Valuation:
N/A
Permit #:
MSF24-01046
Status:
final
Fee:
$365
Permit Type:
N/A
Building Type:
N/A
Brittany rojas basement is being remodeled original furnace removed and minisplit system installed. laundry and bathroom fans installed
Valuation:
$15,000
Permit #:
7084713-FR
Status:
complete
Fee:
$59
Permit Type:
N/A
Building Type:
Single family/duplex
A single family residential repair or replacement none project involving (3 dryer exhaust duct 6 bathroom fan 2 laundry fan 1 kitchen fan 1 whole house fan 2 furnace
Valuation:
N/A
Permit #:
25 122107 BK
Status:
issued
Fee:
$676
Permit Type:
N/A
Building Type:
N/A
Type: mechanical single family class: alteration to structure or system fogarty: (4)exhaust fan with duct-bath; (1)exhaust fan with duct-kitchen; (2)exhaust fan with duct-laundry; (1)heat pump
Valuation:
N/A
Permit #:
MSF24-08728
Status:
final
Fee:
$217
Permit Type:
N/A
Building Type:
N/A
Einhorne two mitsubishi minisplit systems bathroom fans range hood below 400cfm
Valuation:
$20,000
Permit #:
7092715-FR
Status:
complete
Fee:
$119
Permit Type:
N/A
Building Type:
Single family/duplex
Gesseman one mitsubishi system retrofitted to old system and one new mitsubishi system. bathroom fans range hoods dryer vent
Valuation:
$30,000
Permit #:
7090825-FR
Status:
issued
Fee:
$119
Permit Type:
N/A
Building Type:
Single family/duplex
Leahy mitsubishi minisplit heat pump systems bathroom laundry venting kitchen range hood and fresh air make up. hrv according to engineering specs on blueprints
Valuation:
$13,000
Permit #:
6968460-FR
Status:
issued
Fee:
$112
Permit Type:
N/A
Building Type:
Single family/duplex
Type: mechanical single family class: alteration to structure or system, , duncan (bsf23-06601)- (1)hvac - exterior ground mounted; (1)exhaust fan with duct - kitchen
Valuation:
N/A
Permit #:
MSF24-04402
Status:
final
Fee:
$145
Permit Type:
N/A
Building Type:
N/A
Cahill two minisplit heatpump systems to condition three floors. bathroom fans dryer vent, range hood fresh air make up
Valuation:
$25,000
Permit #:
6960345-FR
Status:
complete
Fee:
$112
Permit Type:
N/A
Building Type:
Single family/duplex
A single family residential new structure project installing {5-bath fan 1-laundry fan 1-kitchen fan 1-whole house fan 1-dryer exhaust duct 1-heat pump }
Valuation:
N/A
Permit #:
24 123736 BK
Status:
final
Fee:
$370
Permit Type:
N/A
Building Type:
N/A
A single family residential addition to existing structure none project involving (2 dryer exhaust duct 3 bathroom fan 1 kitchen fan 2 heat pump )
Valuation:
N/A
Permit #:
23 117715 BK
Status:
final
Fee:
$305
Permit Type:
N/A
Building Type:
N/A
A single family residential new structure none project involving (1 dryer exhaust duct 5 bathroom fan 1 kitchen fan 1 furnace
Valuation:
N/A
Permit #:
23 124280 BK
Status:
final
Fee:
$336
Permit Type:
N/A
Building Type:
N/A
Kwok two ducted mitsubishi air handlers and one mitsubishi heat pump
Valuation:
$8,000
Permit #:
6955130-FR
Status:
complete
Fee:
$168
Permit Type:
N/A
Building Type:
Single family/duplex
Wilson chipman environmental air exhaust. replace range hood venting install fresh air make up and replace bathroom fan
Valuation:
$900
Permit #:
6944554-FR
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
Single family/duplex
Will boyan addition of two head unit mitsubishi minisplit system with 2 bathroom fans
Valuation:
$10,000
Permit #:
7029662-FR
Status:
issued
Fee:
$112
Permit Type:
N/A
Building Type:
Multifamily
Brittany rojas basement remodel with new mitsubishi system
Valuation:
$10,000
Permit #:
7084714-RF
Status:
complete
Fee:
$77
Permit Type:
N/A
Building Type:
Single family/duplex
Wsl - fire door demolish
Valuation:
$5,500
Permit #:
CNST-2241223
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Wu two minisplit systems with bathroom fans and dryer vent
Valuation:
$9,000
Permit #:
6972531-FR
Status:
complete
Fee:
$112
Permit Type:
N/A
Building Type:
Single family/duplex
Bennett lee ducted minisplit bathroom fans range hood
Valuation:
$10,000
Permit #:
6993640-FR
Status:
complete
Fee:
$56
Permit Type:
N/A
Building Type:
Single family/duplex
Lawless electric furnace on top floor replaced with mitsubishi ducted air handler. gas furnace on main floor replaced with mitsubishi air handler and new outlets added for new basement remodel
Valuation:
$6,000
Permit #:
6905797-FR
Status:
complete
Fee:
$159
Permit Type:
N/A
Building Type:
Single family/duplex
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Verified License
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Courson Const & Mechanical LLC License info
License Not Verified
| License # | COURSCM816QD |
| Status | Active |
| City | Tukwila |
| Type | Construction Contractor, General |
| Class | Limited Liability Company |
| Business Type | Limited Liability Company |
- When BuildZoom last verified this license, it had an expiration date of December, 2025. Check the current license status of Courson Const & Mechanical 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 # | COURSCM816QD |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Courson Const & Mechanical LLC at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
107
BuildZoom Score
Insured
| Insurer | Country Mutual Ins Co |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Western Surety Co |
| Bond Value | $12,000 |
25
Permits
- Building permit records show that Courson Const & Mechanical LLC has worked on 25 permitted projects.
Courson Const & Mechanical LLC Employees
CC
Catherine Courson
Partner/Member
CL
Courson, Robby Lee
Owner
RC
Robby Courson
Partner/Member