Project Team

Other Team Members

Transformations, Inc. was the Builder and the Solar Installer.

15 Laurel Street, Northampton is the first Transformations, Inc. home to be completed under the Massachusetts Department of Energy Pathway to Zero grant program.  This HERS -9 home was completed on June 17, 2015.

Quick Facts


Location Northampton, Massachusetts
Building Type Singe family residence
Project Type Zero Energy
Basis of Performance Claim Modeled
Bedrooms 4
Bathrooms 2.5
Conditioned Floor Area 2,234 sq ft
Total Cost of Project $407,900

Energy Summary

Energy Data Type Modeled
Renewable Energy System Type(s)
HERS Index -9

Envelope and Mechanicals

Subslab assembly

2" of rigid under the basement slab.

Foundation wall assembly

3.5" of high density foam.

Above grade wall assembly

12" of double studded wall mostly filled with medium density foam.

Air Changes per hour, ACH50 1.00 ACH50