Johan Adam Hiller, a harness-maker, built the Hiller Block. In 1872, the frame building was replaced by the present brick structure. He operated his business on the first floor until 1900. 
    In 1892, Johan’s son, William F. Hiller, founded the W. F. Hiller Insurance Agency on the second floor. 
    In 1920, extensive remodeling took place after the building was badly damaged by fire. The insurance business moved to the first floor. Another store and apartments also are contained in the building. 
    The family-run insurance/real-estate business has been in continuous operation in this building since 1892, making it the oldest business now in the Borough of Tyrone.