For nearly 25 years, our staff of architects, historians, and planners has helped governmental agencies and stakeholder groups identify important resources and plan for their preservation.


Chattel Staff

Robert Jay Chattel, AIA

In 1994, historic architect Robert Chattel established Chattel, Inc., a historic preservation consulting firm based in Los Angeles. The firm specializes in applying the Secretary of the Interior’s Standards for the Treatment of Historic Properties (Secretary’s Standards) and interpreting federal, state, and local historic preservation law and regulations. Robert has more than 35 years experience in historic preservation and is a nationally recognized expert on interpreting the Secretary’s Standards and applying incentives to rehabilitate and expand historic buildings.

In 1991, Robert received the California Preservation Foundation’s first President’s Award for his efforts to preserve the Los Angeles Central Library, while a planner at the Community Redevelopment Agency of the City of Los Angeles, and the Beverly Hills Waterworks, the subject of his Columbia University Master’s Thesis, as a volunteer for Friends of the Waterworks. He has served on the boards of a number of non-profit organizations including the Society of Architectural Historians/Southern California Chapter, Breed Street Shul Project, California Preservation Foundation, and California Historical Society.




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Christine di Iorio, AICP
Principal Associate

Susan O'Carroll, Ph.D.
Consulting Principal Associate

Leslie Heumann
Principal Associate

Laura Carias
Senior Associate

Nels Youngborg
Senior Associate

Caroline Raftery
Associate III

Olivia White
Associate II

Aleli Balaguer
Associate I

Alvin-Christian Nuval

Barbara Fish
Office Manager

Senior Canine Associate