Project Subtitle:
Project Description:
TREE is the third neighborhood to join EcoVillage Ithaca, a group of cohousing developments in northern New York that promote clean, emission-free living in a community setting. TREE is a multifamily, co-housing residence that began construction in 2012 in the North Field of EcoVillage Ithaca. There are 40 separate and diversely-styled homes and apartments within TREE, with sizes ranging from 450 square feet to 1,440 square feet. This village provides residents with a Common House, including a kitchen and dining room, a playroom, a multipurpose room, and guest rooms. The plan for this development was a neighborhood that is durable, affordable, and energy-efficient, to accompany the other EcoVillage Ithaca living communities, SONG and FROG. The homes within TREE are environmentally sustainable, passive solar, and have an energy consumption of net zero. All of the living residences of EcoVillage Ithaca promote clean living and sustainability as well as community and affordability.
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Energy Highlights:
Energy conservation is the primary focus for the TREE homes. Each home is built with an air-tight envelope, extra insulation on the foundation, walls and ceilings, and efficient windows. Energy from the sun is captured through solar panels and a PV array, both of which are on the roof.
HERS Index:
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Subslab assembly:
Rigid insulation installed under slab on grade
Slab edge assembly:
Rigid insulation installed at slab on grade edge
Above grade wall assembly:
The Double 2x4 stud wall with 5” gap has a 12” depth. Insulation includes R-22 (3.5” at R-6.3/in) closed cell spray foam and R-30 cellulose (8.5” at R-3.5/in) were installed in this double stud wall. Walls are sheathed by ZIPS with taped seams. The exterior finish is a rain screen with cementitious siding.
Flat attic assembly:
25" of cellulose (R-3.6/in) is sprayed in the attic.
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State incentives:
NYESH program
Energy Use and Production Documentation:
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Scope Description:
40 apartments and homes, sustainable, passive solar, zero energy, affordable.
Renewable Energy Sources:
Window Description:
Triple-pane, Low-e windows
Team Members:
AquaZephyr, Ithaca, NY; 607-279-5559; Kendall and Mike Carpenter; kendall.m.carpenter@gmail.com; ecovillageithaca.org
Rater: Steven Winter Associates, Norwalk, CT; 203-857-0200; Karla Butterfield, kbutterfield@swinter.com; www.swinter.com