Ceres

CHICAGO — Tenants are happier with buildings that make an effort to be sustainable, researchers at Chicago-based DTZ, a real estate and property investment company, have concluded.

Allison Porter, DTZ’s vice president, sustainability services, and DTZ Economist Rebecca Rockey evaluated responses to a tenant survey developed by Kingsley Associates, a research organization for the real estate industry that’s based in San Francisco. The company provides surveys for building tenants, among others.