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The Performance House

    • This neocolonial home in Old Greenwich, Connecticut, built by Preferred Builders, combines traditional design with state-of-the-art energy efficiency for a home that will save its owners more than $2,000 per year in energy costs compared to a minimum-code home.
    • This 2,700-square-foot home meets all of the requirements of the U.S. DOE Zero Energy Ready Home program, including certification to ENERGY STAR and the U.S. EPA's Indoor airPLUS program. The home is also certified to EPA's WaterSense program, LEED for Homes platinum level, and the National Green Building Standard emerald level.
    • High-efficiency ENERGY STAR-labeled appliances and advanced solid-state lighting technology provide significant energy savings.
    • The handicapped-accessible bathrooms feature water-saving EPA WaterSense-labeled fixtures, recycled-content countertops, and Forest Stewardship Council-certified cabinetry.
    • The unvented, insulated attic provides a conditioned space for the home's high-efficiency comfort system including two air handlers with ultra-efficient fans, a high-efficiency boiler, and a SEER 16 air conditioner. The ultra-efficient attic insulation (R-52.6) includes layers of closed-cell spray foam, mineral fiber batt insulation, and foil-faced fiberglass batt insulation.
    • The ultra-efficient foundation insulation system includes a concrete slab floor poured on top of 2 inches (R-13.6) of closed-cell foam sprayed directly onto an 8-inch bed of ¾-inch stone.
    • After the basement walls are set, the prepared ground is covered with 2 inches of closed-cell spray foam sprayed directly onto the 8-inch bed of trap rock. Piping for radiant floor heating is then laid down and covered with the concrete slab floor.
    • The foundation water barrier system includes sill seal and copper termite-barrier flashing between the concrete foundation wall and the sill plate as a capillary break. The wall water barrier system uses a rubberized waterproof coating sprayed on the exterior of the foundation walls and covered with an R-3 drain board.
    • The coated roof and wall sheathing is taped at all seams as part of a comprehensive draft protection system.
    • The multi-layered roof water barrier system includes roof sheathing joints taped and coated with waterproofing, an adhesive-backed roofing membrane applied at the overhangs, eaves, and valleys, and water-resistant, breathable, roof underlayment.

      The Performance House

      Project Address

      Old Greenwich, CT

      Conditioned Square Footage
      2,700 sqft
      Number of Bedrooms
      4 Beds
      Number of Bathrooms
      3.2 Baths
      Number of Floors Above Grade
      2 Floors Above Grade
      Home Type
      Custom
      Climate Zone Temperature
      Cold
      Climate Zone Humidity
      Humid

      With PV

      HERS Index with PV
      20HERS (PV)
      Average Monthly Energy Bill PV
      $130Average Monthly Energy Bill (PV)
      Annual Energy Cost Savings with PV
      $3,700Annual Energy Cost Savings (PV)
      30 Year Savings with PV
      $156,00030 Year Savings (PV)

      Preferred Builders Inc.

      ZERO

      HIA Year
      HIA Status
      Grand Winner
      HIA Category
      Custom

      Learn More

      Key Features

      Key Features
      Energy / Heat recovery ventilator Electric Vehicle Charger Installed or Wired for Charger High-performance wall with continuous insulation Photovoltaics Unvented insulated attic ACH 50 < 2.5 or CFM50/SF of enclosure ≤ 0.25

      Additional Details

      Additional Details
      Basement

      Testimonials

      Home owner (or occupant) Testimony
      The well-insulated house and solar panels save so much energy, our electric company usually just charges us the $16 service charge. The ENERGY STAR appliances and LED lights also help. We like that the home helps the environment but also helps you to be healthier. Quality eco-friendly materials last longer and reduce maintenance and replacement costs.
      Testimony Citation
      Preferred Builders Homeowner

      Additional Media

      Finished Elevations

        Finished Interiors

          Under Construction

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            Other Images

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              Floor Plan