Independent Property Advisors International Property Group (IPG) is a leading independent property advisory company providing innovative and strategic solutions for private and public sector clients. IPG was established in 1991 by David Archbold and John Elvy. All the members of the IPG Team have extensive ‘across the board’ knowledge of the various property sectors. We work closely with corporations, professional firms and government at the highest levels and are acutely aware of the sensitivities that may arise and discretion required when assessing property and infrastructure projects.