"[S]trict compliance with the [RETSL's] notice provisions is essential to prevent the deprivation of property without due process." Est. of Marra v. Tax Claim Bureau of Lackawanna Cnty., 95 A.3d 951, 956 (Pa. Cmwlth. 2014).
In all tax sale cases, the tax claim bureau "has the burden of proving compliance with the statutory notice provisions." Krawec v. Carbon[Cnty.] Tax Claim Bureau, 842 A.2d 520, 523 (Pa. Cmwlth. 2004). Section 602 [of the RETSL] requires three different forms of notice to property owners prior to an upset tax sale: publication, posting, and mail. "If any of the three types of notice is defective, the tax sale is void." Gladstone v. Fed[.] Nat['l] Mortg[.] Ass['nThe business record exception to hearsay did not apply ....], 819 A.2d 171, 173 (Pa. Cmwlth. 2003).
[W]e neither adopt a bright line rule forbidding the authentication of documents recorded by a third party, nor do we endorse an automatic incorporation doctrine. Instead, we will continue to allow our trial courts to utilize their broad discretion in evidentiary matters by applying the business record exception of Rule 803(6) and the Act to determine if the witness "can provide sufficient information relating to the preparation and maintenance of the records to justify a presumption of trustworthiness" subject to the opponent rebutting the evidence with any other circumstances indicating a lack of trustworthiness. In re Indyk's Est[., 488 Pa. 567,] 413 A.2d [371,] 373 [(1979)].
The director of the TCB never stated that she was the custodian of the Bureau's records or owner's file, nor did she offer any testimony regarding the manner in which the agent prepared and maintained the Report or the timing of preparation in relation to the posting, which information is not evident from the Report itself.. . .The mere fact that the Bureau possesses the Report and calls it a business record is not sufficient to make it so. [emphasis added] . . . The TCB director was not a qualified witness whose testimony alone was sufficient to offset the Report's hearsay character.