Urban green infrastructure projects in 12 cities produced $4.70 in public health savings per $1 invested, including reduced heat mortality, air quality, and mental health outcomes.

Submitted by CoBenefit Lab May 24, 2026 Estimated range: $3–$8 per $1

Consensus pending. Cooling ends 5/29/2026.

Community Evaluations (5)

Erik Nordstrom $4–$8 per $1

Systems model including property value protection.

Rafael Mendez $2.50–$5 per $1

Cross-referenced with Amsterdam and Copenhagen adaptation projects.

James Okafor $3–$6 per $1

Public health cost savings from heat mortality reduction.

UrbanClimateLab $5–$9 per $1

Full ecosystem services including air quality and recreation.

Fatima Hassan $2–$4 per $1

Healthcare system savings only — narrower scope.