Updated: Dec 25, 2025
Location
Address
243 Haverhill Rd, Chester, NH, 03036
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Gregsak & Sons, Inc. Photos
Gregsak & Sons, Inc. Construction
John W. Gregsak, CSL, is a Construction Manager with a Bachelor’s Degree from Roger Williams University. John has supervised construction projects at major universities in Boston, commercial and residential remodels/renovations.
From BuildZoom: Gregsak & Sons, Inc. , 243 Haverhill Rd, Chester, NH holds a Home Improvement Contractor license according to the Massachusetts license board.
Their BuildZoom score of 110 ranks in the top 4% of 13,069 New Hampshire licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Gregsak & Sons, Inc. , we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Gregsak & Sons, Inc. Services
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Gregsak & Sons, Inc. Contact Information
Phone Number: (603) 490-2504
Address: 243 Haverhill Rd, Chester, NH 03036
Verified License
BuildZoom confirmed this contractor's license
Gregsak & Sons, Inc. License info
Verified License
| License # | 197766 |
| Status | Active |
| State | Massachusetts |
| Type | Home Improvement Contractor |
| Date Issued | 01-24-2026 |
- BuildZoom verified this license was active as of December 2025.
Verify this license's status for Gregsak & Sons, Inc. at the Mass.gov Consumer Affairs and Business Regulation.
This is a sample of licensing data; click here to access a complete history.
Great construction leader. Got our project done in a timely manner and was extremely respectful.