Multiplex Holdings Home/Holding company/Multiplex Holdings 275 Slater St., Ottawa, ON K1P 5H9 +16132306584 Contacts 275 Slater St., Ottawa, ON K1P 5H9 +16132306584 Send updates or Remove Description Features Wheelchair-accessible entrance Map Reviews No reviews! ADD REVIEW Similar companies Holding company thomas group of company Wellington St, Ottawa, ON K1Y 2Z5 +19205434249 Holding company Seth Commercial Corporation 4500 Dixie Rd Unit 9B, Mississauga, ON L4W 1V7 +19059977384 Holding company Leadmark Holdings +13065208564 Holding company On Purpose Enterprises Ltd. +17802467886 Categories Holding company