Cumbria House, built at Windermere on the Lake, is the first LEED (Leadership in Energy and Environmental Design) certified house of its size in the Northeast. Located in the historic Long Ridge area of North Stamford, Connecticut, Windermere on the Lake (WOTL) is a 74 acre conservation community with 24 lakeside homes and gardens. The community includes a gatehouse, a field house with a pool, tennis courts, walking trails, and floating dock. Through sustainable design and practices, this community harmoniously blends with the natural environment. 

Cumbria House exceeds the requirements for EnergyStar certification with a Home Energy Rating (HERS) of 49 out of 150 (the standard home receives a score of 100, while the minimum for EnergyStar is 85). It also received Forestry Stewardship Council (FSC) certification for the flooring and trims. The home showcases several eco-friendly features, such as low Voc paints, engineered lumber, drought tolerant plants, LED lighting, high efficiency irrigation system, and geothermal HVAC. In addition, 40% of the construction waste was diverted from landfills.

As president of NRDC-Residential, Mark Robbins managed development, construction and design of this home. Bartels-Pagiliaro Architects designed the home, which is inspired by the designs of the 19th century architect, C.F.A. Voysey, a leader in the Arts and Crafts movement. Through the sweeping rooflines, tiered triangles, front-facing courtyard, grand windows, graceful forms, luxurious materials, and outstanding craftsmanship, this home reflects the style of the movement. The team also included the famous British architect Simon Johnson, who designed the gardens and landscaping.