Missing Middle Infill Housing

Vacant lot between two two-story residential buildings in Chicago, Illinois.

Chicago Breaks Ground on Vacant Lots Sold for $1 to 'Rebuild Middle-class Housing.'

The city’s Missing Middle Infill Housing program supports development in distressed neighborhoods.

January 8, 2026 - Block Club Chicago

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.

Top Books

An annual review of books related to planning.

Top Schools

The definitive ranking of graduate planning programs.

100 Most Influential Urbanists

The who's who of urbanism, according to Planetizen readers.

Urban Planning Creators You Should Know

A short list of voices on social, video, and podcasting platforms.