53 Pa. Stat. § 7445
The council of any city of the third class, or of any borough, or the board of commissioners of any township of the first class of this Commonwealth, entitled to a lien under this act, shall file a lien therefor, if not heretofore filed, in the office of the prothonotary of the county within which the property lies within six months after the completion of the work where the improvement is now in progress, or within twelve months after the confirmation absolute of the report of the viewers assessing the benefits for such improvement whether now or hereafter pending, or within twelve months after the approval of this act where the improvement is now completed if no lien has been heretofore filed for the same, or within twelve months after the passage of any councilmanic ordinance assessing benefits under the provisions of this act where the improvement is already completed, and the same shall be entered upon record as other municipal claims. Such liens shall state the name of the party claimant, which shall be the corporate name of the city, borough or township making the improvement; name of the owner or reputed owner of the property assessed; a reasonable description of the property assessed; the amount or sum claimed to be due which shall include interest on the assessment from the completion of the improvement for what improvement the claim is made; the date of its completion; the date of the assessment for which the lien is filed. Such lien, when so filed, shall be prima facie evidence of all matters therein set forth and of the right of the city, borough or township to recover the amount therein claimed to be due, together with interest from the date of the lien or completion of the improvement, costs, and an attorney's commission of five per centum for collecting.
53 P.S. § 7445