§ 5525.  Four year limitation.
        (a)  General rule.--Except as provided for in subsection (b),
     the following actions and proceedings must be commenced within
     four years:
            (1)  An action upon a contract, under seal or otherwise,
        for the sale, construction or furnishing of tangible personal
        property or fixtures.
            (2)  Any action subject to 13 Pa.C.S. § 2725 (relating to
        statute of limitations in contracts for sale).
            (3)  An action upon an express contract not founded upon
        an instrument in writing.
            (4)  An action upon a contract implied in law, except an
        action subject to another limitation specified in this
        subchapter.
            (5)  An action upon a judgment or decree of any court of
        the United States or of any state.
            (6)  An action upon any official bond of a public
        official, officer or employee.
            (7)  An action upon a negotiable or nonnegotiable bond,
        note or other similar instrument in writing. Where such an
        instrument is payable upon demand, the time within which an
        action on it must be commenced shall be computed from the
        later of either demand or any payment of principal of or
        interest on the instrument.
            (8)  An action upon a contract, obligation or liability
        founded upon a writing not specified in paragraph (7), under
        seal or otherwise, except an action subject to another
        limitation specified in this subchapter.
        (b)  Special provisions.--An action subject to section 8315
     (relating to damages in actions for identity theft) must be
     commenced within four years of the date of the offense or four
     years from the date of the discovery of the identity theft by
     the plaintiff.
     (Oct. 5, 1980, P.L.693, No.142, eff. 60 days; Dec. 20, 1982,
     P.L.1409, No.326, eff. 60 days; June 19, 2002, P.L.430, No.62,
     eff. 60 days)

        Cross References.  Section 5525 is referred to in section
     5529 of this title.