Haydenville Woodworking & Design, Inc. Share: Contractors- Building and GeneralCarpentersRemodeling- Residential & Commercial Visit Website Request Info 35 Conz Street Northampton, MA 01060 (413) 665-7402 Hours: 8am-4pm Monday through Friday, by appointment. About Map About General Contractors specializing in residential construction in the Pioneer Valley for over 30 years. What's Nearby? Distance: 5 10 15 20 25 50 mi.