overdevelopment

From over- + development.

overdevelopment (usually uncountable, plural overdevelopments)

1. Excessive development; the state or quality of being overdeveloped
   • 1988 October 7, Hank De Zutter, Pamela Little De Zutter, “Invasion of the FIPs: boom time in southwestern Michigan”, in Chicago Reader‎^[1]:

     […] 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.

• underdevelopment