How We Started Colliers International has evolved from enterprising, independent local business owners to an organization of more than 554 offices and more than 16,000 employees around the world with headquarters in Seattle, Washington. We were one of the first International Property Consultants (IPCs) to start operations in India in 1995. As we grew, we continued to seek out partners who shared our common values and spirit of enterprise. Colliers International and its people have helped redefine the meaning of real estate consultancy services. Currently, Colliers International has full service offices in Bangalore (Bengaluru), Chennai, Delhi, Gurgaon, Hyderabad, Kolkata, Pune, Mumbai and NOIDA.