Four years ago, Seattle homeowners let a nonprofit build a tiny home in their backyard for a 74-year-old man who had been homeless for a decade. Now 12 other homeowners are part of the Block Project, whose tiny houses meet strict sustainability standards. Homeowners just have to be good neighbors; case managers help the residents and Facing Homelessness connects them with neighborhood volunteers. Property tax isn't affected, as the nonprofit owns the house and leases the space for free. Volunteers build the houses in the Block shop, local plumbers and electricians set up utilities, and the nonprofit provides basic furnishings. A “Welcome Home Kit” fundraised with the community offers other essential items.