Jones Lang LaSalle announced today two leadership changes. Peter Roberts, currently CEO, Americas, will become chief strategy officer. Lauralee Martin, currently COO and CFO, will succeed Roberts as CEO, Americas. The changes will be effective January 1, 2013.

During Roberts' 10-year tenure as CEO of the Americas, annual revenues in the region have grown six-fold through organic growth and transformational mergers. He also has been a member of the firm's global executive committee, which guides the firm's global strategy.

"Peter has played a leading role in making Jones Lang LaSalle the premier commercial real estate brand in the Americas," JLL CEO Colin Dyer said in a statement. "In the newly created role of chief strategy officer, he will combine his real estate expertise, client-first perspective and critical thinking to help implement our growth strategy for the future."

Martin joined Jones Lang LaSalle in 2002 as CFO and was appointed to the additional position of COO in 2005. Under her leadership, the firm has maintained an investment grade balance sheet. She built the firm's energy and sustainability services business, helped structure acquisitions across its global platform and contributed to productivity growth and client service through the development of a globally unified technology platform.

"Lauralee's combined experience, and her quick and decisive approach, make her uniquely qualified to lead the Americas into a period of further rapid revenue growth," Dyer said in a statement. "At a time when our business is increasingly characterized by the need for clarity and speed, she will focus the Americas on driving client services, increasing productivity and investing in our people."

Martin and Roberts will work together to ensure a seamless transition while a search is conducted for the CFO role. Until a new CFO is appointed, Martin will retain responsibility for the function.