Updated: Jun 27, 2026
Location and Projects
Address
275 WESTBROOK RD, Deep River, CT, 06417
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DK Flagge Construction
DK Flagge, 275 Westbrook Rd, Deep River, CT (Employees: Donald Flagge, Dustin Flagge, and Michael Flagge) holds a Heating, Piping & Cooling Unlimited Contractor license and 4 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 DK Flagge, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
DK Flagge Services
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DK Flagge Contact Information
Phone Number: (860) 664-3835
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Address: 275 WESTBROOK RD, Deep River, CT 06417
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Install new gas piping from furnace to propane tanks. fuel supplier to make final connection
Valuation:
$1,500
Permit #:
G-22-187
Status:
complete
Fee:
N/A
Permit Type:
Gas: piping to ap...
Building Type:
Single family
Installation of ductless mini split and gas piping to above ground propane tank for outdoor kitchen in pool house. za
Valuation:
$5,800
Permit #:
M-21-348
Status:
issued
Fee:
N/A
Permit Type:
Mechanical: new a...
Building Type:
Single family
Replace existing oil fired furnace with new air temp rlr-cbp oil fired furnace. (60, 000 btu) install new american standard 14 seer air conditioning system
Valuation:
$10,300
Permit #:
H-20-0770
Status:
issued
Fee:
$145
Permit Type:
N/A
Building Type:
N/A
Installation of 2 ton air conditioning condenser & air handler. za
Valuation:
$32,000
Permit #:
M-22-21
Status:
issued
Fee:
N/A
Permit Type:
Mechanical: new a...
Building Type:
Single family
Install new energy kinetics oil fired boiler w/hot water heat exchanger
Valuation:
$11,000
Permit #:
M-22-184
Status:
complete
Fee:
N/A
Permit Type:
Mechanical: new b...
Building Type:
Single family
Steele and csst gas piping for fireplace and exterior appliance
Valuation:
$1,500
Permit #:
G-22-20
Status:
complete
Fee:
N/A
Permit Type:
Gas: piping to ap...
Building Type:
Single family
Installation of new energy kinetics ascent boiler with hot water heat exchanger
Valuation:
$9,000
Permit #:
M-21-288
Status:
complete
Fee:
N/A
Permit Type:
Mechanical: new b...
Building Type:
One & two family
Install (2) 2 ton air conditioning condensors
Valuation:
N/A
Permit #:
Z-21-686
Status:
issued
Fee:
N/A
Permit Type:
Zoning air condit...
Building Type:
Single family
Placing a 24x29 carport on property for winter weather protection of propane delivery trucks
Valuation:
N/A
Permit #:
4366
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of 1000 gal ug tank and underground piping
Valuation:
$11,100
Permit #:
G-22-336
Status:
complete
Fee:
N/A
Permit Type:
Gas: addition und...
Building Type:
Single family
Replace existing air conditioning condenser same location
Valuation:
N/A
Permit #:
Z-22-384
Status:
issued
Fee:
N/A
Permit Type:
Zoning air condit...
Building Type:
Single family
Running gas piping to two locations. propress gas copper piping to be used. other company to set propane tanks
Valuation:
$1,000
Permit #:
H-19-0091
Status:
complete
Fee:
$25
Permit Type:
N/A
Building Type:
N/A
Addition gas lines to generator
Valuation:
$500
Permit #:
G-22-326
Status:
complete
Fee:
N/A
Permit Type:
Gas: piping to ap...
Building Type:
Commercial
No Description Available
Valuation:
$16,000
Permit #:
H-21-0342
Status:
issued
Fee:
$205
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
7395
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
$7,700
Permit #:
H-20-0776
Status:
issued
Fee:
$109
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
9536
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Gas piping to outdoor kitchen & fireplace. approximately 20 ft of copper piping
Valuation:
$1,200
Permit #:
G-21-347
Status:
issued
Fee:
N/A
Permit Type:
Gas: piping to ap...
Building Type:
Single family
Install new outside oil tank. same location
Valuation:
$2,000
Permit #:
M-22-83
Status:
issued
Fee:
N/A
Permit Type:
Mechanical: new e...
Building Type:
Single family
No Description Available
Valuation:
$1,950
Permit #:
H-22-0395
Status:
issued
Fee:
$37
Permit Type:
N/A
Building Type:
N/A
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Verified License
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DK Flagge License info
Verified License
| License # | HTG.0405697-S1 |
| Status | Active |
| State | Connecticut |
| Type | Heating, Piping & Cooling Unlimited Contractor |
| Date Issued | 09-01-2025 |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for DK Flagge at the Connecticut Department of Consumer Protection.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | HIC.0626897 |
| Status | Active |
| State | Connecticut |
| Type | Home Improvement Contractor |
| Date Issued | 04-01-2026 |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for DK Flagge 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 # | PLM.0208611-P7 |
| Status | Active |
| State | Connecticut |
| Type | Plumbing & Piping Limited Contractor |
- When BuildZoom last verified this license, it had an expiration date of October, 2025. Check the current license status of DK Flagge with the Connecticut Department of Consumer Protection
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | HIC.0536493 |
| Status | Active |
| State | Connecticut |
| Type | Home Improvement Contractor |
- When BuildZoom last verified this license, it had an expiration date of March, 2025. Check the current license status of DK Flagge with the Connecticut Department of Consumer Protection
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | NAT-F108556-1 |
| Status | Inactive |
| Nation | Environmental Protection Agency |
| Type | Renovation |
- According to the United States Environmental Protection Agency, 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 DK Flagge at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
91
BuildZoom Score
17
Permits
- Building permit records show that DK Flagge has worked on 17 permitted projects.
DK Flagge Employees
DF
Donald Flagge
DF
Dustin Flagge
MF
Michael Flagge