List: Family-owned businesses

  Oldest companies: 1. Gilbane Building Co. | Year founded: 1873 2. ATW Companies | Year founded: 1886 3. Arpin Group | Year founded: 1900 FOOTNOTE 1. This is an estimate of total high-season employment, including franchises in Rhode Island and Massachusetts. Want to join? For more information about participating in PBN’s Top Lists, or

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