Rule 5003(a) - Filing Instructions1. An appeal from the decision of the Board shall be filed within thirty (30) days from the date of notification.2. Within ten (10) days after filing the appeal, the appellant shall serve a copy of the appeal on the Board, on all affected taxing authorities at their business addresses and, if the property owner is not the appellant, on the property owner at his, her, its or their registered address or addresses as shown on the tax records of Chester County. 3. Within twenty (20) days of service of the appeal, the appellant shall file an affidavit of service.4. The Board shall automatically be a party to an appeal unless it specifically declines that status in writing. Any taxing authority or property owner entitled to be notified of an appeal may become a party to the proceedings by filing an entry of appearance within thirty (30) days of service of such notice. The entry of appearance shall be deemed to deny the allegations in the appellant's petition, except for the names of the parties and the location of the taxable property. However, any party may plead additional material by way of Answer or New Matter, as appropriate, within thirty (30) days of entering an appearance. Adopted June 19, 2012., effective thirty (30) days after publication in the Pennsylvania Bulletin