Granite REIT Customer Service Phone Numbers Customer service: +1.647.925.7500 Governance Inquiries: 647.925.7600 Real Estate Inquiries: 647.925.7509 Web Maintenance Inquiries: 647.925.7538   Granite REIT Headquarters Info, Email, Phone number, Website and live chat Information Granite is a Canadian-based Real Estate Investment Trust (REIT) engaged in the acquisition, development, ownership and management of predominantly industrial, warehouse and