Tim Twomey is Senior Vice President and Deputy General Counsel of CallisonRTKL, an approximately 1,500-person international architecture, engineering, planning and interior design firm with multiple offices worldwide. Tim has over forty-one years of corporate management,
administrative, legal practice and risk management experience, thirty-seven of which have
been while in-house counsel to The Architects Collaborative, Shepley Bulfinch
Richardson and Abbott, RTKL Associates Inc., and now CallisonRTKL Inc.
Tim is a registered architect in numerous jurisdictions and a member of the American Bar
Association and its Forum Committee on the Construction Industry. He is a Fellow of
the American Institute of Architects. He is a past member (1999-2011) and Chair (2007-2008) of the AIA's
Documents Committee; the Boston Society of Architects (former member of the Board of Directors, Commissioner of Professional
Practice, and member and chair of its Ethics Committee); and past member of the Design Professional
Insurance Companies Architects Advisory Council. Tim was an early leader in the promotion and understanding of design-build as an important alternative form of project delivery. Tim authored Understanding the Legal Aspects of Design-Build (1989), published by R.S. Means Company, Inc. While on the Documents Committee, Tim chaired the Design-Build Task Group which in 2007 completely re-wrote the AIA’s earlier family of design-build contract documents and spoke extensively to promote their understanding and use. Tim co-drafted the 2007 A201 General Conditions of the Contract for Construction, and spoke extensively to numerous AIA and non-AIA affiliated groups including at the last AIA Convention in Las Vegas and to over 1,300 construction lawyers at the 2008 American Bar Association’s Forum Committee On the Construction Industry’s Midwinter Meetings in New York City and San Antonio. Tim was also Co-Chair (2010 - 2017) of the Practicing Law Institute's annual Construction Law Program "Building Better Construction Contracts."