The Homes at Maynard Road
Sudbury, Massachusetts


  • Located in Sudbury, MA
  • 3 Homes
  • Currently Building Zero-Net Energy Attainable Homes


  • $162,700 to 180,000 for Deed Restricted Affordable Homes)

Affordable Home Styles

  • 3 bedroom Carriage Single Family
  • 2 bedroom Georgian Duplex


  • 6.24 to 7.8 kW Grid-tied leased Solar Electric Systems.
  • 12" Double Studded R-45 Low Density Foam Walls, R- 63 Cellulose Attic Insulation
  • On Grade Construction Homes Have R-30 Rigid Insulation Under the Slab and R-20 on the Slab Edge.
  • R-5 Windows
  • ENERGY STAR Certified Rating of Zero Energy Attainable and Positive Energy Homes


  • Ventilation systems, Low or No VOC Materials/Sealants/Paints, Hard Floor Surfaces


  • Water Conserving Fixtures, Rapidly Renewable Materials, Low Maintenance Materials

One unit is a 3 bedroom single family home with a Carriage house design. The floor plan includes a first floor master bedroom and two bedrooms and a bath on the second level. The second unit is a Georgian duplex consists of 2 two bedroom units. These homes have been designed to fit with the aesthetics of the existing neighborhood.

Keeping the homes affordable and near Net Zero was essential for energy efficiency and comfort. The construction consists of a slab on grade foundation and with a combination of open cell spray foam and blown in cellulose to achieve high R-values. The units will include HVAC systems with air conditioning, Energy Star Appliances and triple paned vinyl windows. These homes are designed for a high efficiency energy rating. Leased solar panels will be installed on each home as an alternative energy source and contribute to the zero energy home. Heating and air conditioning will consist of 2 Mitsubishi Hyper Heat, 12,000 BTU mini-split air source heat pump systems. Preliminary HERS (Home Energy Ratings) for the Carriage house comes in at -12, for the Georgian duplex unit A -5 and Unit B -7.

Strategies used to reach net zero are reducing the loads of the homes and then supplying renewables though solar electric panels on the roofs. The homes are super-insulated in the following manner: R-5 windows, R-10 under basement slab insulation or R-30 in slab on grade construction, R-45 cavity wall insulation in the 12” thick double stud walls, and finally R-63 attic insulation with 18” of cellulose. The solar electric systems range from 6.24 kW to 7.8 kW and are planned for the main roofs of the buildings. The project energy usages for the homes are projected to range from -2.9 to -8.0 MMBtu per year.

The homes were marketed by the Sudbury Housing Trust and applications were taken through September 2015. The residents of the new homes are selected through a lottery. Final construction is slated within the second quarter of 2016.

In addition to building out projects for other developers, Transformations offers consulting to help other builders and developers get up to speed on building Zero-Net Energy Homes. We offer a special builder program for installing solar electric systems. For information, click here to send us email.