Real Estate Developers Near Me in Heidelberg, Ontario Real Estate Developers Near Me in Heidelberg, Ontario Home / Ontario / Heidelberg / Real Estate Developers Real Estate Developers San John Holdings Inc 1 Chancellor Dr RR 2, Heidelberg, ON N0B 2M1, Heidelberg, Ontario 519-699-0248 Categories of companies in Heidelberg Automobile Dealers - Used Cars Churches - Apostolic Electrical Contractors Excavating Contractors Feed Dealers Lumber - Wholesalers &/or Manufacturers Mechanical Contractors Naturopathic Physicians Real Estate Developers Renovations & Home Improvements Restaurants Roofing Contractors