In Puerto Rico, the experimental housing development was designed to provide 800 low-cost dwelling units for moderate-income families in a system of stacked prefabricated concrete modules cascading down an undeveloped hill in the densely populated Hato Rey neighborhood of San Juan. Consistent with Moshe Safdie’s approach to other Habitat developments, Habitat Puerto Rico was designed to provide inhabitants with a sense of community, privacy, and access to green space, where each unit had a private garden and views of the city.