Warren has substantial knowledge and expertise through his high-level involvement in transactions related to public-private partnerships, joint ventures, limited partnerships, mergers and acquisitions, corporate finance, construction and real estate development. He has a particular focus on the natural resources sector, complemented by significant experience in the real estate, environmental and forestry sectors.

Warren acts as counsel to a major oil and gas producer and distributor in environmental and real estate matters. He has acted for one of Canada's major integrated forest companies in all aspects of the development, financing, construction and implementation of a series of "greenfield” projects throughout North America.  For over two decades he advised a major international hotel chain on all legal issues including acquisitions, divestitures, financings, hotel management and general day-to-day matters.

Warren advised a major Canadian engineering firm in connection with the negotiation, financing and construction of several public private partnerships.  He also acted for an international developer in all aspects of a major land development in downtown Vancouver, and several pension funds in all matters relating to comprehensive real estate development projects.

Warren acts for a major City in the lower mainland of British Columbia in connection with acquisitions, divestitures, rezonings, permitting and affordable housing.