NAHBGreen Awards

ALESSANDRIA This home has a HERS index of 38 with R-20 blown-in cellulose in the walls and R-38 in the attic. All drywall is sealed to the plates, corners, and around windows and doors on exterior walls. Ventilation is provided by two ERVs. The home also incorporates a 1.94 kW Dow Powerhouse solar shingle system and a thermal solar water heater.

PROUDGREENHOME Designed to use 60% less energy than that of a similar home built to current energy code, the ProudGreenHome is located in the sustainable community of Serenbe outside of Atlanta. The home's energy consumption is projected to be net-zero thanks to its rooftop PV panels.

THE PERFORMANCE HOUSE Certified NGBS-Emerald, this home also meets the criteria of the Energy Star 3.0, EPA Indoor airPlus, WaterSense, and DOE Challenge Home programs. Features such as two-foot overhangs help to keep out the hot summer sun while allowing the lower winter sun to come through south-facing windows. R-31 insulation was used in the 2x6 wall assembly with R-52 and R-53 in the roof assembly and behind knee walls. An energy management system helps the owners understand and regulate their energy consumption.

AFFORDABLE COASTAL COTTAGE The cottage, which was constructed on the footprint of a pre-Katrina home, incorporates many green features such as advanced framing, low-flow plumbing fixtures, Energy Star appliances, low-E windows, open-cell spray foam, and a 17-SEER two-speed HVAC system. Passive strategies including window corss ventilation, two-foot roof overhangs, and shade trees demonstrate cost-effective ways to decrease energy use in the hot, humid climate.

EMORY POINT PHASE 1 This transit-oriented mixed-use development encompasses more than 80,000 square feet of retail space and 443 apartment units. In addition to several energy-efficient features, two 30,000-gallon underground water cisterns capture rainwater from the roof as well as condensation from the HVAC systems.

PRESERVING OUR ENVIRONMENTAL HERITAGE The whole-house renovation of this 40-year-old home brought its HERS rating down from 98 to 59. Strategies included upgraded windows, a dual-zoned and right-sized HVAC system, and replacement and sealing of ductwork.

FORT BLISS FAMILY HOUSING The 250 new multifamily homes at Fort Bliss respond to the U.S. Army's initiative for net-zero wastewater and energy. In addition, Balfour Beatty Communities is installing 13.2 megawatts of rooftop solar PV panels on a total of 4,700 homes at Fort Bliss, which will make it the largest solar-powered community int he world.

ARBOR HOUSE This affordable housing project blends energy efficiency and high-performance construction with great design features. Precase concrete walls and floors were used to construct the eight-story building. As walls were erected, prefinished modular bathroooms were delivered and moved into their final location saving time, money, and materials. The building features a 10,000-square-foot rooftop greenhouse that houses the first-ever hydroponic farm on a residential building.

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