Rule 2232(c)*(1) - Interveners in Zoning and Real Estate Assessment Appeals(1) In every appeal from a real estate assessment filed by the Board for the assessment and revision of taxes, the Board of Commissioners of Montgomery County, the governing body of the municipality and the Board of School Directors of the school district in which the real estate is situated, and the property owner, if the property owner is not the appellant, may intervene as of course, by entering a written appearance. Prompt notice of such intervention shall be given to the appellant, appellee and affected municipal bodies.Montgo. Cnty. Pa. 2232(c)*(1)