Updated: Jul 16, 2026
Location and Projects
Address
187 Horsepond Rd, Madison, CT, 06443
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J Nann Development Group Construction
J Nann Development Group LLC, 187 Horsepond Rd, Madison, CT (Owned by: John Nann) holds a Home Improvement 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 J Nann Development Group LLC, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
J Nann Development Group LLC Services
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J Nann Development Group LLC Contact Information
Phone Number: (203) 645-1844
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Address: 187 Horsepond Rd, Madison, CT 06443
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Building Permits by J Nann Development Group LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Building permit b-21-893 issued for the original design. request modifications to original plan informed needs zoning approval
Valuation:
N/A
Permit #:
Z-21-778
Status:
issued
Fee:
N/A
Permit Type:
Zoning: addition ...
Building Type:
Single family
Enclose 2 open walls of exiting portico. excavate and construct foundation and slab. building 2 walls under the existing roof above the existing portico. remove 2 walls one 6 feet and one 5 feet with existing front door. install new front door and windows making existing exterior portico space interior foyer. bump out the fort door 2’4” to the front of the existing portico roof adding... see more
Valuation:
$20,000
Permit #:
B-21-893
Status:
issued
Fee:
N/A
Permit Type:
Building: alterat...
Building Type:
Single family
Finish off basement with sheetrock electrical new plumbing fixtures in pre-exiting bathroom
Valuation:
N/A
Permit #:
856
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Finish off basement with sheetrock electrical new plumbing fixtures in pre-exiting bathroom
Valuation:
$3,900
Permit #:
B-13-1010
Status:
complete
Fee:
$55
Permit Type:
Existing
Building Type:
R residential-1&2...
Construction of 16 x 16 deck retrofit to code
Valuation:
$2,000
Permit #:
B-09-00795
Status:
issued
Fee:
N/A
Permit Type:
Building permit u...
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
4532
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Verified License
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J Nann Development Group LLC License info
Verified License
| License # | HIC.0664389 |
| Status | Active |
| State | Connecticut |
| Type | Home Improvement Contractor |
| Date Issued | 04-01-2026 |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for J Nann Development Group LLC at the Connecticut Department of Consumer Protection.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 202091 |
| Status | Inactive |
| State | Massachusetts |
| Type | Home Improvement Contractor |
- According to the Mass.gov Consumer Affairs and Business Regulation, 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 J Nann Development Group LLC at the Mass.gov Consumer Affairs and Business Regulation.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | HIC.0616172 |
| 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 J Nann Development Group LLC at the Connecticut Department of Consumer Protection.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | NHC.0011912 |
| Status | Inactive |
| State | Connecticut |
| Type | New Home 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 J Nann Development Group LLC at the Connecticut Department of Consumer Protection.
This is a sample of licensing data; click here to access a complete history.
91
BuildZoom Score
J Nann Development Group LLC Employees
JN
John G Nann
Owner
JN
John Nann
Owner