Did you read the article? It's not about building small (as in low floor area) apartments, but small apartment buildings. Apartment buildings which are 3-4 stor

Did you read the article? It's not about building small (as in low floor area) apartments, but small apartment buildings. Apartment buildings which are 3-4 stories high, and provide the "missing middle" between high density apartments you find in the middle of cities and the single family homes that make up urban sprawl.