Founded in 1920, with a focus on customer service and satisfaction, Hennessy's reputation for quality has earned us many repeat clients. We have been instrumental in building and restoring many of St. Petersburg's local landmarks and institutions, some of which include the Museum of Fine Arts St. Petersburg, Mahaffey Theater, St. Anthony's Hospital, Resurrection House, St. Petersburg Museum of History, Jim and Heather Gills YMCA, Childs Park YMCA Community Center, The Salvation Army Sallie House and Children's Village, and Hennessy's very first project – St. Mary Our Lady of Grace Catholic Church in downtown St. Petersburg.