Updated: Aug 16, 2026
Location and Projects
Address
738 LEMAY FERRY RD., Saint Louis, MO, 63125
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Cocos, WM. G. Co Inc. William Cocos Plumber
Cocos, WM. G. Co Inc. William Cocos, 738 Lemay Ferry Rd, St. Louis, MO (Owned by: Joseph Cocos) holds a Plumber license and 20 other licenses according to the St Louis County license board.
Their BuildZoom score of 108 ranks in the top 5% of 23,328 Missouri licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Cocos, WM. G. Co Inc. William Cocos, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Cocos, WM. G. Co Inc. William Cocos Services
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Cocos, WM. G. Co Inc. William Cocos Contact Information
Phone Number: (314) 631-2688
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Address: 738 LEMAY FERRY RD., St. Louis, MO 63125
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Cocos, WM. G. Co Inc. William Cocos St. Louis
Quality
108
95th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Cocos, WM. G. Co Inc. William Cocos has a BuildZoom score of 108, which places them above 95% of 23,328 contractors in Missouri.
Activity
|
1 project
|
2026 |
|
93 projects
|
2025 |
|
115 projects
|
2024 |
|
127 projects
|
2023 |
Our building permit records indicate that Cocos, WM. G. Co Inc. William Cocos has worked on at least
336.0 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
|
19 projects
|
New Constructions |
|
14 projects
|
Commercial Renovations |
|
8 projects
|
Home Additions |
|
295 projects
|
Plumbing projects |
|
55 projects
|
Sewer laterals |
Analyzing permits over the last 4 years shows that Cocos, WM. G. Co Inc. William Cocos mostly works on
plumbing project
and sewer lateral
projects.
Pricing
|
265 projects
|
< $5k |
|
37 projects
|
$5k-$20k |
|
16 projects
|
$20k-$50k |
|
10 projects
|
$50k-$100k |
|
13 projects
|
$100k-$250k |
|
1 project
|
$250k-$500k |
The typical size of their permits is approximately $3,000. 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 Cocos, WM. G. Co Inc. William Cocos
This is a sample of this contractor's permits. Click here to access their complete permit history.
Interior remodel (kitchen and master bathroom convert the existing hall bathroom to laundry room/half bathroom addition a new bathroom in existing living room area)
Valuation:
$150,000
Permit #:
24BLD-07746
Status:
issued
Fee:
$736
Permit Type:
Interior finish
Building Type:
N/A
Spot repair of 15 feet to include up to 20 feet with work starting approximately at the base of the yard trap cleanout and progressing upstream towards the house. please install a new cleanout. repair is in the driveway with asphalt driveway work involved please repair and replace all damaged and disturbed piping under the defective area
Valuation:
$3,975
Permit #:
25DRN-01558
Status:
complete
Fee:
$126
Permit Type:
Repair
Building Type:
N/A
Emergency spot repair no less than 10 feet to include up to 45 feet with work starting 2 feet from the base of the yard trap and progressing downstream towards the msd main. contractor is required to notify homeowner at last 24 hours prior to arrival to perform the repair
Valuation:
$2,800
Permit #:
25DRN-01542
Status:
complete
Fee:
$126
Permit Type:
Repair
Building Type:
N/A
Wright/notre dame-plumbing portion of school addition per 24bld-09315
Valuation:
$187,500
Permit #:
25PLU-07773
Status:
issued
Fee:
$413
Permit Type:
Addition
Building Type:
N/A
B-street collision-tenant renovation per 24bld-06736
Valuation:
$206,907
Permit #:
25PLU-01729
Status:
issued
Fee:
$383
Permit Type:
Alteration
Building Type:
N/A
Drainlaying residential sewer lateral program
2024-12-12
Spot repair of 10 feet with no more than 15 feet with work starting at approximately 43 feet from the base of the stack and progressing downstream towards the msd main. install a new cleanout. the remainder of the sewer lateral shall be cabled extensively until clean then camera remainder of line to verify no further defects are present during
Valuation:
$4,300
Permit #:
24DRN-02405
Status:
complete
Fee:
$126
Permit Type:
Repair
Building Type:
N/A
Excavation in street to replace lateral from curb to msd main for st. louis county lateral repair program. include a portion of one concrete pad directly in front of home on same side of street
Valuation:
N/A
Permit #:
24SUP-01360
Status:
plancheck
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replacement of main stack from just above basement floor to just above flood rim of 1st floor bathroom lav. replacement of water supply piping through house with uponor pex pipe and fittings
Valuation:
$3,900
Permit #:
25PLU-18082
Status:
issued
Fee:
$132
Permit Type:
Repair
Building Type:
N/A
Southern hobby - two restrooms being added adjacent to existing restrooms. 2 water closets 2 lavs with eemax point of use water heaters and one water fountain. two floor drains are on ground rough only permit 23plu-02951
Valuation:
$27,287
Permit #:
23PLU-02996
Status:
complete
Fee:
$168
Permit Type:
Addition
Building Type:
N/A
Replacement of 40 gallon gas water heater with 30 gallon short gas water heater due to space confinements. install expansion tank
Valuation:
$2,000
Permit #:
25PLU-02072
Status:
complete
Fee:
$47
Permit Type:
Replacement
Building Type:
N/A
Clayton sleep - alteration to existing space extend waste piping furnish & install 3 fixtures and 1 floor drain building. permit #22bld-06892 any additional information please contact joe cocos @314-631-2688 or 314-495-8791
Valuation:
$13,817
Permit #:
23PLU-03008
Status:
complete
Fee:
$150
Permit Type:
Alteration
Building Type:
N/A
Emergency: interior homeowner portion of water service repair 24wrl-00036 as the leak was found in the foundation wall of the home. wall penetration with new main water shutoff valve and prv 1 to first branch in basement
Valuation:
$987
Permit #:
24PLU-01489
Status:
complete
Fee:
$79
Permit Type:
Repair
Building Type:
N/A
Drainlaying residential sewer lateral program
2025-09-12
Spot repairs of 10'-15 with cleanout install starting at transition working downstream and a second 10'-15 repair starting 50 from base of stack working downstream repair includes the removal of the buried trap
Valuation:
$3,150
Permit #:
25DRN-01779
Status:
complete
Fee:
$126
Permit Type:
Repair
Building Type:
N/A
Pga superstore - interior renovation/finish per 24bld-08780
Valuation:
$112,897
Permit #:
25PLU-01937
Status:
issued
Fee:
$335
Permit Type:
Interior finish
Building Type:
N/A
Replace lateral from trap to msd main. approximately 25 with 20 in paved street/sidewalk. include new cleanout
Valuation:
$6,700
Permit #:
25DRN-00176
Status:
complete
Fee:
$126
Permit Type:
Repair
Building Type:
N/A
Drainlaying residential sewer lateral program
2024-11-22
Spot repair of 20 feet with no more than 25 feet with starting at the house side curb and progressing downstream to the msd main. install a new cleanout in the yard. replace wye connection
Valuation:
$7,875
Permit #:
24DRN-02083
Status:
complete
Fee:
$126
Permit Type:
Repair
Building Type:
N/A
Emergency repair starting 40 from cleanout working downstream to msd connection. street work required. approximately 15 total repair all pipe under disturbed area of street to be replaced
Valuation:
$7,647
Permit #:
23DRN-00665
Status:
complete
Fee:
$126
Permit Type:
Repair
Building Type:
N/A
Spot repair of 10'-15'starting 10 from foundation and working downstream. install cleanout to surface
Valuation:
$4,600
Permit #:
25DRN-00209
Status:
complete
Fee:
$126
Permit Type:
Repair
Building Type:
N/A
Second floor water loss where a supply line to bathroom came loose while insured on vacation. water damage to 2nd main floor and basement
Valuation:
$95,211
Permit #:
22BLD-06329
Status:
expired
Fee:
$774
Permit Type:
Repair
Building Type:
N/A
Drainlaying residential sewer lateral program
2023-02-17
Spot repair of 10 up to 15 starting at 5 from foundation progressing downstream towards msd. install clean out. any additional information required please contact ben cocos @314-631-2688
Valuation:
$3,577
Permit #:
23DRN-00314
Status:
complete
Fee:
$126
Permit Type:
Repair
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Cocos, WM. G. Co Inc. William Cocos License info
Verified License
| License # | P7163 |
| Status | Active |
| County | St Louis County |
| Type | Plumber |
- BuildZoom verified this license was active as of August 2026.
Verify this license's status for Cocos, WM. G. Co Inc. William Cocos at the Saint Louis County Department of Public Works.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | D9685 |
| Status | Active |
| County | St Louis County |
| Type | Drainlayer |
- BuildZoom verified this license was active as of August 2026.
Verify this license's status for Cocos, WM. G. Co Inc. William Cocos at the Saint Louis County Department of Public Works.
This is a sample of licensing data; click here to access a complete history.
Verified License
| Status | Active |
| County | St. Charles County |
| Type | Plumbing Contractor |
- BuildZoom verified this license was active as of August 2026.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | PLC1063236 |
| Status | Active |
| City | University City |
| Type | Plumbing Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2023. Check the current license status of Cocos, WM. G. Co Inc. William Cocos with the City of University City
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | PLC0364464 |
| Status | Active |
| City | University City |
| Type | Plumbing Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2024. Check the current license status of Cocos, WM. G. Co Inc. William Cocos with the City of University City
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | PLC8607012 |
| Status | Active |
| City | University City |
| Type | Plumbing Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2020. Check the current license status of Cocos, WM. G. Co Inc. William Cocos with the City of University City
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 37251-BASIC |
| Status | Active |
| County | Jefferson County |
| Type | Drainlayer Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2020. Check the current license status of Cocos, WM. G. Co Inc. William Cocos with the Jefferson County Building Division
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| Status | Active |
| County | St Louis County |
| Type | Plumber |
- When BuildZoom last verified this license, it had an expiration date of December, 2020. Check the current license status of Cocos, WM. G. Co Inc. William Cocos with the Saint Louis County Department of Public Works
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| Status | Active |
| County | St Louis County |
| Type | Mechanical Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2020. Check the current license status of Cocos, WM. G. Co Inc. William Cocos with the Saint Louis County Department of Public Works
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| Status | Active |
| County | St Louis County |
| Type | Plumber |
- When BuildZoom last verified this license, it had an expiration date of December, 2020. Check the current license status of Cocos, WM. G. Co Inc. William Cocos with the Saint Louis County Department of Public Works
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| Status | Active |
| County | St Louis County |
| Type | Plumbers |
- When BuildZoom last verified this license, it had an expiration date of December, 2020. Check the current license status of Cocos, WM. G. Co Inc. William Cocos with the Saint Louis County Department of Public Works
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| Status | Active |
| County | St Louis County |
| Type | Drainlayer |
- When BuildZoom last verified this license, it had an expiration date of December, 2020. Check the current license status of Cocos, WM. G. Co Inc. William Cocos with the Saint Louis County Department of Public Works
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| Status | Active |
| County | St Louis County |
| Type | Drainlayer |
- When BuildZoom last verified this license, it had an expiration date of December, 2020. Check the current license status of Cocos, WM. G. Co Inc. William Cocos with the Saint Louis County Department of Public Works
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| Status | Active |
| County | St Louis County |
| Type | Plumbers |
- When BuildZoom last verified this license, it had an expiration date of December, 2020. Check the current license status of Cocos, WM. G. Co Inc. William Cocos with the Saint Louis County Department of Public Works
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | PLC8284936 |
| Status | Active |
| City | Dyersburg |
| Type | Plumbing Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2017. Check the current license status of Cocos, WM. G. Co Inc. William Cocos with the City of Dyersburg
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | P328 |
| Status | Active |
| County | Jefferson County |
| Type | Plumbing |
- BuildZoom has not verified this license since February, 2016.
Verify this license's status for Cocos, WM. G. Co Inc. William Cocos at the Jefferson County Building Division.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | M033 |
| Status | Active |
| County | Jefferson County |
| Type | Mechanical Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2020. Check the current license status of Cocos, WM. G. Co Inc. William Cocos with the Jefferson County Building Division
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | P105 |
| Status | Active |
| County | Jefferson County |
| Type | Plumbing Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2020. Check the current license status of Cocos, WM. G. Co Inc. William Cocos with the Jefferson County Building Division
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | X0060 |
| Status | Inactive |
| County | St Louis County |
| Type | Mechanical |
- According to the Saint Louis County Department of Public Works, 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 Cocos, WM. G. Co Inc. William Cocos at the Saint Louis County Department of Public Works.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| County | St. Charles County |
| Type | Plumbing Contractor |
- According to the St. Charles County Department of Development & Business Services, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| County | St. Charles County |
| Type | Plumbing Contractor |
- According to the St. Charles County Department of Development & Business Services, 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.
This is a sample of licensing data; click here to access a complete history.
108
BuildZoom Score
2K
Permits
- Building permit records show that Cocos, WM. G. Co Inc. William Cocos has worked on 1986 permitted projects.
Cocos, WM. G. Co Inc. William Cocos Employees
BC
Benjamin Cocos
Licensee
BC
Benjamin G Cocos
JC
Joseph Cocos
Owner
JC
Joseph D Cocos
WC
William Cocos
Licensee
WC
William J Cocos
WC
William J. Cocos
Owner