The 21st century home should be an integrated whole that respects a number of criteria such as spatial quality, energy efficiency, intelligent use of resources, and awareness of site and environmental conditions.

Over the last several years MLA has been developing a series of integrated green small houses to include active and passive solar design, pre-fabricated / modular construction techniques, geo-thermal energy, “cool” roofing and siding solutions, water management and conservation, adaptive foundations, and carefully detailed building envelopes.

This led to a series of “Kit Houses” that share the following characteristics:

- Excellent R-values (R-40 walls, R-60 roof and R-30 floors)
- Continuous air seal
- Triple-glazed windows
- Energy recovery ventilation systems that allow continuous fresh air with very little energy loss.
- “Rain-screen” exterior finish, as an extremely durable exterior treatment that allows the house to control moisture and water vapor in the most advantageous way.
- SIPS prefabricated panel construction. These panels can be pre-fabricated in sizes easily transported and assembled by a small crew, and provide excellent structural and thermal characteristics.

All of these contribute to a building envelope that greatly limits energy losses, while providing for a high interior comfort level. They also relate directly to standards established by Passive House Institute, and depending on the site and orientation, have the potential to provide for a house with energy consumption at 7-10% of that expected from conventional construction.

We feel that Passive House principles embody a highly informed and aware outlook on state-of-the-art construction standards. Michael Lewis has been certified by the Institute as a Passive House designer. MLA’s work on the Kit House is part of the firm’s ever deepening commitment to the progression of residential architecture.