Everything Passive House
Alnoba
ABOUT
Client Kensington Investment Group
Typology Cultural
Location Kensington, New Hampshire
Year 2017
Design Team Matthew O’Malia, Riley Pratt, Timothy Lock
Consultants Becker Structural Engineers, Petersen Engineers
Contractor Callahan Construction
EUI 11.1
AWARDS
AIA NH, 2020, Honor Award
AIA New England, 2020, Honor Award
AIA Maine, 2018, Citation Award
AIA Maine, 2018, Craft Award
Alnoba is a 13,000-square-foot certified Passive House mixed-use facility in rural New Hampshire. The client, a family foundation, commissioned the project to support leadership training programs and host meetings and events in the pristine, natural setting of its 400-acre site. The project’s design intent, in keeping with the foundation’s environmental focus, was a contemporary expression of New England rural traditions, in a building that meets the highest technological and building-performance standards.
We located the building at the forested margin of a sloping meadow, allowing the existing grades to flow around structure in the traditional pattern of a bank barn. The building consists of connected, barn-like elements, grounded by granite-faced foundations and articulated with bands of white cedar siding in varied patterns. Dark-framed glazing wraps the building’s corners, lending a contemporary element of transparency and creating strong indoor-outdoor links.
The building’s structure is organized around the exposed, reclaimed-timber frames that support its four major public spaces. Each frame follows a traditional pattern, increasing in scale from the relatively intimate meditation room to the expansive meeting room, with its 60-foot double-top-chord trusses. Glazing along roof ridges and behind slatted screening at the meeting room gables admits filtered daylight, recalling patterns of sunlight through the cracks in barn siding. A simple, elemental material palette of wood, stone, and plaster is layered behind the timber frames.
Concealed from view are the building assemblies, mechanical systems, and equipment required to support and cater large gatherings while meeting both local codes and the rigorous Passive House standard. The meeting room’s massive 6-foot-high fireplace—a nonnegotiable program feature—posed a particular challenge. By completely air-sealing the chimney, fitting an airtight damper, and providing a dedicated supply of make-up air, we were able to gain Passive House Institute US approval.
