Advancements within Our Profession + New Additions

Advancements within Our Profession + New Additions

Advancement within our profession is one of the most satisfying things to announce, so it is a pleasure to share that senior associates Elijah George, asla, pla, and associate Dustin Felix, asla, pla have recently completed the landscape architecture licensure exam, and are now registered as professional landscape architects (pla) by the State of Florida Board of Landscape Architecture.  Associate Andrew Castanheira, asla, has completed his masters degree in landscape architecture and becomes a fulltime employee.  Also, adding to our depth of experience is our most recent addition, senior associate, Gavin Cain, asla, pla, and Emily Provenza, business and client experience coordinator.

“Our firm sits at the intersection of so many professional passions: community outreach, urban planning, southern landscapes and historic places. These worlds collide daily in our office, making it a place where everyday is a new lesson and challenge,” stated Jeremy Marquis, president of Marquis Latimer + Halback, Inc.

Elijah George


Elijah is an advocate for the restorative power of nature and is passionate about designing landscapes, which we depend on, that both enrich the human environment and the natural systems. He is a certified arborist, and has a bachelor degree in advertising and a master’s degree in landscape architecture from the University of Florida.





Dustin Felix


Dustin’s expertise in project management and organization is grounded in his service in the United States Army having overseen multi-million dollar reconstruction budgets in Al-Rashid District, Baghdad, Iraq. A graduate of U.S. Military Academy (West Point) with a master’s degree in Landscape Architecture from Chatham University, he continues to serve in the U.S. Army Reserve as a lieutenant colonel, currently commanding a battalion based in San Antonio, Texas.



Andrew Castanheira Profile Photo


Andrew received his masters degree in landscape architecture from the University of Florida.  He has a passion for sensory experiences within the landscape and how it affects culture.  His completed thesis project was titled The Sensorial Landscape: Lessons from Land Art for Landscape Architecture.





Gavin is a graduate of the University of Florida. He is passionate about the craft and technical implementation of every project. With a broad range of experience within the industry, he has successfully completed projects ranging from resort and multi-family residential amenity areas, and custom detailed residential gardens.







Emily is the friendly voice our clients love to hear. She is a graduate of Flagler College, having worked in the Office of Institutional Advancement and the Office of the Registrar for over eight years.  With broad administrative and business development skills, Emily also served as a legislative intern for the Concerned Women for America in Washington, DC.




“Elijah, Dustin, Andrew, Gavin and Emily are valued members of our family and will be assets to the profession of landscape architecture for many decades to come”, stated Frederick Halback, founding principal.


Frederick Halback is the founder and senior principal of the firm. Elected as a fellow by the American Society of Landscape Architects for Built Projects, Fred’s work has received dozens of design awards, including two environmental design awards presented by the First Lady in White House ceremonies. With over 40 years experience, Fred’s designs have stood the ’test of time’. Representative work includes numerous streetscape and parks throughout Florida, multiple projects for the Walt Disney Company, the Florida State Historic Capitol-Capitol Center Complex, Orange County Convention Center, St. Augustine Multi-modal Facility & Visitor Center, and the St. Augustine Amphitheatre.

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Marquis Latimer + Halback, Inc. | 34 Cordova Street, Suite A, St. Augustine, Florida 32084 | 904.825.6747