Opinion by
Mr. Justice O’Brien,This is an appeal from the final decree of the Court of Common Pleas of Philadelphia County. Appellant mortgagor, Thomas A. Doherty, Jr., brought suit against appellees, Adal Corporation and Louis J. Megaro, to set aside a Sheriff’s Sale. The appellant was the owner of the premises at 1525 South 26th Street, Philadelphia, subject to a mortgage and bond given in March, 1957, to the Savings and Loan Association of South Philadelphia. On March 1, 1966, the Association assigned the mortgage and bond to Adal Corporation. On May 10, 1966, Adal entered judgment by confession on the bond, issued execution on the judgment, and directed the Sheriff to sell the premises at a Sheriff’s Sale on June 6, 1966. The property was sold at the Sheriff’s Sale to Adal’s attorney, who later assigned his bid to appellee Megaro, who received a deed from the Sheriff, recorded on July 22, 1966.
Appellant’s ground for complaint is that the sale did not conform with the notice provisions of Philadel*111phia Local Rule 3129(f) (1) and (2) (formerly Rules 910a and 910b).1 Primarily, this assertion is tliat the notice of entry of judgment and of the impending Sheriff’s Sale, haying been sent to the mortgaged premises by Adal, the mortgagee’s assignee, rather than to *112appellant’s home, where the mortgagee had sent all notices, was ineffective. The court below held that Adal sent the notice to the only address it had, and that was sufficient. Although we have grave doubts that an interpretation of a rule which would allow the mortgagee’s assignee to stand on a better footing than the mortgagee is valid, we need not enter upon an inquiry into the meaning of a local rule of court, a task which we are always reluctant to undertake. Cf. McFadden v. Pennzoil Company, 326 Pa. 277, 191 Atl. 584 (1937); Dellacasse v. Floyd, 332 Pa. 218, 2 A. 2d 860 (1938). But cf. Dearnley v. Survetnick, 360 Pa. 572, 63 A. 2d 66 (1949).
The court below quite properly pointed out that the instant proceeding is an equitable one, governed by equitable principles. Dearnley v. Survetnick, supra. The appellant had visited the premises every week or two, and had seen that the locks had been changed and that vast improvements were being rendered to the property beginning June 15, 1966. Yet he did not institute suit until September 9, 1966. It was. surely within the power of the court to withhold relief on the basis that the appellant had unclean hands in attempting to sit back and await the completion of the improvements and then profit from the alleged failure to give proper notice.
The decree of the court below is affirmed, each party to bear own costs.
“(1) Notice to Be Given prior to Execution upon Judgment Entered on Bond Accompanying a Mortgage.
“No execution shall issue upon a judgment entered on a bond accompanying a mortgage to condemn or sell the mortgaged premises unless the plaintiff, or some person on his behalf, shall file of record an affidavit setting forth, to the best of his knowledge, information, and belief, the name and address of the real owner or owners of the premises, and that written notice of the date of entry of said judgment, with the court, term, and number thereof, has been sent by registered or certified mail to such owner or owners and to the obligor in the bond. If the affidavit shall aver that the plaintiff, or the person making the affidavit on his behalf, does not know and has not been able to ascertain the owner or owners of the mortgaged premises or their addresses, or the names or addresses of some of them, or the whereabouts of the obligor, such an affidavit shall be a compliance with this rule as to the owner or owners and obligor whose names or addresses are unknown.
“(2) Notice to Be Given upon Any Execution for the Sale of Real Estate.
“At or after the time of the issuance of any writ of execution for the sale of any real estate, the plaintiff, or some person on his behalf, shall give written notice by personal service on, or by registered or certified mail to, the defendant in the writ and to the real owner or owners of the real estate to be sold, stating the place, date, and hour of the intended sale and the real estate to be sold, which date shall be at least ten days after the giving of such notice as aforesaid, and shall, before the date of the sale, file an affidavit in the office of the prothonotary that said notice has been given in accordance with this rule, or that the plaintiff or the person making the affidavit on his behalf does not know and has not been able to ascertain the real owner or owners of said real estate or their addresses, or the names or addresses of some of them, or the whereabouts of the defendant in the writ, in which case such an affidavit shall be a compliance with this rule as to the real owner or owners whose names or addresses are unknown, or as to the defendant in the writ whose whereabouts is unknown.”