overdevelopment

noun

1. (uncountable, usually)Excessive development; the state or quality of being overdeveloped

   “[…] the threat of lopsided, uncontrolled overdevelopment seems distant to many--local residents and Chicagoans alike--who regard the rediscovery of the area as a welcome return to its heyday in the 1930s and '40s, when even more Chicago families spent their summers here.”