CEPHAS Housing in Downtown Yonkers NY
An abandoned 19th century parochial school building burned to the ground in 1975 -since that time the 1/4 acre site lay fallow, becoming a trash dump and a short cut route between a busy avenue and a one-way residential street.  This void in the urban fabric is now filled with a l5-unit housing project to provide permanent housing for the homeless.  The project's sponsoring church bordered one side of the site, and across the one-way street stood a few proud row houses that served as an aesthetic spring-board for the new project's massing and detailing. 
This project endeavors to break the rules of high density design:

-no common corridors/elevators/lobby - preempting vandalism/terrorism for low income residents - there is one common fire stair inaccessible to non-residents and not part of the primary access path for any unit.

-all units have their own front door facing the great outdoors

-4 units are handicapped adaptable/accessible without lifts or elevators

-although up to 6 stories high, no resident walks up or down more than 2 flights of stairs to get to their front door.

-no shared/common walls - most units are thru-floor "flats" - with maximum natural light and ventilation (huge double-hung windows); even though there are up to 4 units per level, the project uses 3 distinct "buildings" to allow for maximum unit separation.

-all detailing and massing was generated the free-standing single family houses across Stanley Avenue, a small one-way street, then the "backside" elevation grows as the site slopes down, thus aggrandizing the project mass that faces the major thoroughfare, Riverside Avenue.

-the three "buildings" share common mechanical systems, egress paths and retaining walls

-the 15 units are larger than the "norm" (mostly 3 bedrooms, one 4)

Beyond the programmatic aspects the site's peculiarities, government regulatory review and budgetary limitation helped to create a "tight" situation.

-a 1/4 acre site

-the terrain drops 20 feet over the 45 feet of buildable site depth

-the site is in a Fire District, hence a 2 hour rated skin and frame and sprinklered central fire stair.

-a $110 per square foot price for steel and concrete construction, all in, total budget $1.7 million 

-built this year after three years of budgeting, variance obtaining, permit work, plus federal, state, local and bank review.

This Project Received Several AIA Awards as well as a Mention in the New York Times