Unique Double Envelope Home Hits Market For $400K

STERLING, MA — Decades ago, before solar panels and geothermal systems were widely available, architects sought to create more efficient building types, including the double envelope style.

These homes are designed to capture warmth from the sun through a set of south-facing windows set at a 55-degree angle. Warm air on the inside of the house would then rise and push cool air through a cavity in the walls (the double envelope), circulating heat throughout. The style was invented by designer Lee Porter Butler in the 1970s. It did have some downsides, including an inability to get rid of heat and humidity in warmer months.

This example in Sterling was built in 1984, but was recently renovated. Here are the details:

• Address: 30 Chace Hill Rd, Sterling, Massachusetts
• Price: $390,000
• Square Feet: 1710
• Bedrooms: 3
• Bathrooms: 1 Full and 1 Half Baths
• Built: 1984
• Features: Wonderful opportunity to live in this unique contemporary, double envelope home. This house is a type of passive solar house that uses a solarium to collect solar energy. Recently renovated, this sunlight filled, open concept home boasts beautiful beamed ceilings on the first floor, complimented by the white kitchen with stainless appliances, under cabinet lighting and granite counters. More than enough room to entertain! All new floors throughout, with low maintenance vinyl on the first floor and cozy carpet upstairs in the bedrooms. Attached two car garage includes ample storage space above. Brand new septic. Close to rte 190 and area amenities including Davis Farmland, Moose Tracks Mini Golf, local farms and ice cream.

This listing originally appeared on realtor.com. For more information and photos, click here.