JLF & Associates. Inc. is an Architecture firm located in Bozeman, Montana The ownership of JLF & Associates consists of Paul Bertelli, Design Principal; Ashley Sullivan, Architect and Principal; Logan Leachman, Principal; and Tammy Hauer, CFO and Principal. JLF & Associates takes on residential, recreational, and commercial projects throughout the United States. JLF & Associates works with each client to design a structure that meets their needs, expresses their individuality and finds a life of its own. The firm employs twenty-five architects, design associates and support staff, all of whom work together as a team to oversee the day-to-day management of projects.