The Supreme Court of Pennsylvania has held that a suburban zoning ordinance which limited multi-family dwellings to a forty-three acre commercial district was unconstitutionally exclusionary, since it did not provide a fair share of the township's 3,800 acres for development of multi-family dwellings.
Surrick v. Zoning Hearing Board, 382 A.2d 105 (Pa. 1977).
Sally A. Davoren,
Zoning - Constitutionality of Exclusionary Zoning Ordinance - Fair Share,
Duq. L. Rev.
Available at: https://dsc.duq.edu/dlr/vol17/iss2/11