3 Person Family, 1083 Person Days of Occupancy


32'x26' Saltbox Style 2 Floor Home

Type of Construction
Stories 2
Conditioned Building Volume 21,054 cu ft
Conditioned Floor Area 1,500 sq ft

Location and Climate Details

10 Charles St.
Greenfield, MA 01301
United States
Location Type Suburaban
Climate Region Zone 5
Köppen Climate Type Dfb
Lat. / Long. POINT (-72.5994104 42.587915)
Elevation 241 ft
Solar Insolation 166
Annual CDD and Base Temp 532 | 75
Annual HDD and Base Temp 8203 | 68


Site conditions:
previously undeveloped land
Site description:

Quarter acre lot in Greenfield, MA. Land needed to be cleared.

Materials and Design Strategy


Sheathing: Zip Wall and Roof. Siding" Western Red Cedar, T&G, 1x6. Roof: Exposed fastener ribbed metal, ivory. Exterior Trim: Cypress, except for soffit which is pine. Flooring 1st Floor: Scrap stone countertop. Flooring 2nd Floor: Spruce 2x6, T&G. Ceilings: Lightrock Drywall 50% and #3 T&G Grade pine 50%. Porch Deck: Pressure treated southern pine. Porch and entryway: Local Black Locust.

Special architectural measures:

Passive design allows home to be 100% solar heated on sunny winter days. Indoor build-in laundry drying eliminates need for dryer. Open floor plan with additional opening between floors hot air from heat pump to convect to second floor. Large deciduous tree on west side of house reduces cooling load but has minimal impact on wintertime solar gain or roof solar access. Air Intake for HRV on southern wall to take advantage of sun. Heat pump condenser located on southwest corner to improve energy efficiency. White roof reduces cooling load. Advanced framing strategies reduced wood content of exterior walls to 8.3%. Mudroom and pantry are airsealed from the home, so with the door shut the conditioned volume drops by about 550 cubic feet.