(i) occupies or intends to occupy for the transaction of its business or partly so occupies and partly leases,

(ii) acquires for the purpose of providing parking facilities for the use of its customers, officers and employes, or

(iii) acquires solely or jointly with others for the purpose of providing data processing facilities for the institution or for the institution and others subject to the limitation that the book value of all such real property, of all furniture, fixtures and equipment acquired in connection with any real property owned or leased by the institution, of all alterations of buildings on real property owned or leased by the institution, of all shares of stock or corporations acquired under subsection (d) of this section, and investments in obligations of or for the benefit of corporations described in subsection (d) of this section or loans upon the security of the stock of such corporations shall not exceed one hundred percent of the aggregate of surplus, unallocated reserves, undivided profits and subordinated securities in the case of a mutual savings bank, or one hundred percent of the aggregate of capital, surplus, undivided profits and capital securities in the case of any other institution, or such larger amount as may be approved by the department, and subject to the requirement that estimates of costs of any building on real property owned or leased by the institution shall be submitted to the department for its approval prior to the erection thereof;

(i) a determination by a majority vote of its directors or trustees at least once each year as to the advisability of retaining any such property or security interest so acquired, and

(ii) disposition within a period of twenty-four months after the date of acquisition or such longer period as the department may approve of shares of its own stock so acquired and of shares of stock of a bank, bank and trust company, trust company or national bank held after such acquisition in excess of the limitation of section 311(d)¹ of this act;