384 A.2d 1374 Maria C. Good and Joseph Good, Appellants v. Zoning Hearing Board of Haverford Township, Appellee. Commonwealth Court of Pennsylvania.Argued April 3, 1978 May 1, 1978. Zoning — Real estate office — Professional office — Home occupation — Special exception — Variance — Burden of proof — Unnecessary hardship — Public welfare. 1. […]