Jacobs v. Fetzer

The Borough of Ridley Park in Delaware County enacted a zoning ordinance on October 12, 1948, which provided a comprehensive plan of zoning for the entire borough. Approximately four years later, William Jacobs, the plaintiff, purchased a number of contiguous unimproved lots in the borough for development purposes. All of the lots so purchased were situated in a district zoned by the ordinance as R-1 Residential. The minimum building standards prescribed for an R-1 Residential District were single-family dwellings, one to a lot, the lots having a minimum width of forty feet each.