Lisa Fay Matthiessen has been working in sustainability since 1995 and has shown a deep commitment to the USGBC for 15 years. Founder of the USGBC Los Angeles Chapter, Lisa became one of the first LEED Faculty, has participated in various LEED working groups and committees, and is now the Chair of the Market Advisory Committee. Lisa has developed a deep technical mastery of LEED; she worked on one of the first LEED projects (Bren Hall, LEED Platinum Version 1.0) and since then has led the successful certification of over 20 projects. Lisa has mentored and educated others; she developed and led a team of 20 sustainability specialists during her 8 years with Davis Langdon, and has reached thousands through her workshops, lectures, and publications. Lisa has contributed to the growing body of sustainability knowledge; her seminal work on the cost of green helped to shift the discussion to a productive and positive standpoint. Lisa is a Principal with Integral Group, heading up their Los Angeles office.