The recent housing bubble has driven American houses to extreme sizes and exurban locations. Too often, housing value has been determined through complicated equations based on square footage and marketable features, rather than spatial, material, or environmental quality. Even in cities like Philadelphia, low-cost mortgages have helped to foster a culture of “bigger is better.”

The 100K Houses were conceived as a response to this unsustainable approach to housing. Small, efficient, and super-green, the 100K Houses provide sustainable, affordable options for first-time Philadelphia homebuyers.