PoliticsAugust 15, 2026
infill
IN-fil
Definition
The development or use of vacant or underutilized land within an existing urban area, typically to increase density or housing.
Etymology
Derived from the prefix 'in-' (into) and the verb 'fill.' It emerged in urban planning and architecture in the mid-20th century to describe the process of filling gaps in a city's built environment.
In the news
The article uses the term to suggest that using vacant land for new construction is a key strategy for reversing wealth loss and building housing in Chicago neighborhoods.
Districtwide CPS support needed for the arts — not just at one high school
Read the full article ↗Chicago Sun-Times