Updated: May 30, 2026
Location and Projects
Headquarters Address
P.O. Box 14, Sandown, NH, 03873
Local address
531 MOUNT PARNASSUS RD, East Haddam, CT, 06423
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Gregory Collock Plumber
Gregory Collock, 531 Mount Parnassus Rd, East Haddam, CT (Employee: Gregg Collock) holds a Plumbing & Piping Unlimited Contractor license and 3 other licenses according to the Connecticut license board.
Their BuildZoom score of 91 ranks in the top 37% of 12,093 Connecticut licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Gregory Collock, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Gregory Collock Services
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Gregory Collock Contact Information
Headquarters Address: P.O. Box 14, Sandown, NH, 03873
Local Address: 531 MOUNT PARNASSUS RD, East Haddam, CT 06423
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Gregory Collock East Haddam
Quality
91
63rd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Gregory Collock has a BuildZoom score of 91, which places them above 63% of 12,093 contractors in Connecticut.
Activity
|
1 project
|
2023 |
Our building permit records indicate that Gregory Collock has worked on at least
1.0 project 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.
Pricing
|
1 project
|
< $5k |
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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Installation of pellet boiler as a secondary source of heat
Valuation:
$4,800
Permit #:
M-23-19
Status:
issued
Fee:
N/A
Permit Type:
Boiler/furnace
Building Type:
One & two family
No Description Available
Valuation:
N/A
Permit #:
P-18-46
Status:
issued
Fee:
$0
Permit Type:
Plumbing - new/al...
Building Type:
One & two family
Plumbing for addition 2nd floor bathroom. fee inc with building permit
Valuation:
N/A
Permit #:
4146
Status:
complete
Fee:
N/A
Permit Type:
plumbing:subcontr...
Building Type:
Single family
Plumbing & gas piping as shown on prints..running new water main
Valuation:
N/A
Permit #:
BLD-2014-78281-03
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
$3,000
Permit #:
M-15-418
Status:
complete
Fee:
$51
Permit Type:
Boiler/furnace re...
Building Type:
One & two family
Gas line to generator
Valuation:
$250
Permit #:
P-12-230
Status:
issued
Fee:
$30
Permit Type:
Gas line
Building Type:
Commercial
Gentle jungle new ada bathroom 1 mop sink 2 pet wash sinks
Valuation:
$19,400
Permit #:
P-08-00822
Status:
issued
Fee:
N/A
Permit Type:
plumbing pmt unde...
Building Type:
N/A
20080482-p020
Valuation:
N/A
Permit #:
MISC-PLM-08-080444
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace flush meter & shower valves lav faucets in existing
Valuation:
$4,950
Permit #:
20080071
Status:
I
Fee:
N/A
Permit Type:
Commercial plumbi...
Building Type:
N/A
Install sewer check valve in basement bathroom line. one way plumbing 531 mt parnassus road east haddam ct 06123. (860-301-5277)
Valuation:
$800
Permit #:
P-2006-0052
Status:
complete
Fee:
$30
Permit Type:
Check valve
Building Type:
Single family
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Verified License
BuildZoom confirmed this contractor's license
Gregory Collock License info
Verified License
| License # | PLM.0279521-P1 |
| Status | Active |
| State | Connecticut |
| Type | Plumbing & Piping Unlimited Contractor |
| Date Issued | 11-01-2025 |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Gregory Collock at the Connecticut Department of Consumer Protection.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | HTG.0390653-S7 |
| Status | Active |
| State | Connecticut |
| Type | Heating, Piping & Cooling Limited Contractor |
| Date Issued | 09-01-2025 |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Gregory Collock at the Connecticut Department of Consumer Protection.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | HTG.0399624-ST1 |
| Status | Active |
| State | Connecticut |
| Type | Heating, Piping & Cooling Limited Contractor |
- When BuildZoom last verified this license, it had an expiration date of August, 2024. Check the current license status of Gregory Collock with the Connecticut Department of Consumer Protection
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | HIC.0612618 |
| Status | Inactive |
| State | Connecticut |
| Type | Home Improvement Contractor |
- According to the Connecticut Department of Consumer Protection, 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 Gregory Collock at the Connecticut Department of Consumer Protection.
This is a sample of licensing data; click here to access a complete history.
91
BuildZoom Score
10
Permits
- Building permit records show that Gregory Collock has worked on 10 permitted projects.
Gregory Collock Employees
GC
Gregg Collock
GC
Gregory Collock