The United States Supreme Court held that in order to survive a takings challenge, a development exaction must have an essential nexus with a legitimate state interest, and also that a rough proportionality must exist between the development exaction and the burdens to be imposed by the proposed development.
Dolan v. City of Tigard, 114 S. Ct. 2309 (1994).
Melody A. Hamel,
Constitutional Law - Fifth Amendment - Takings - Regulatory Takings,
Duq. L. Rev.
Available at: https://dsc.duq.edu/dlr/vol33/iss4/9