LIZ SARGENT HLA - Key Persons


Carolyn Mitchell

Job Titles:
  • Architect
  • Collaborative Consultant
Carolyn Mitchell is a versatile landscape architect with over thirty years of experience in landscape architecture, planning, historic preservation, and environmental restoration. Carolyn's practice has focused on the intersection of natural resource preservation and cultural landscape interpretation and treatment. She has served as lead consultant for preservation and rehabilitation of some of the nation's most iconic landscapes with award-winning results and collaborated on multidisciplinary teams to restore, rehabilitate, and interpret sites of all sizes. Her work has encompassed planning, design, and construction phase services for the National Park Service, the United States Navy, state and local agencies, and private clients. Her historic preservation expertise includes preparation of cultural landscape reports, development of alternatives for analysis, visual impact assessment for NEPA compliance, and detailed rehabilitation design. Carolyn is a licensed professional landscape architect in Maryland, New York, and Florida and a Maryland Forest Conservation Plan qualified professional. She received a BA in botany from George Washington University and a Master of Landscape Architecture from the University of Virginia.

Christina Osborn

Job Titles:
  • Consultant
  • Collaborative Consultant
Christina Osborn is a historic preservation consultant, with a particular focus on cultural landscapes. She has worked on a variety of projects with interdisciplinary teams throughout the United States, including cultural landscape documentation, historic district surveys, national register nominations, preservation master plans, environmental assessments, and design and construction projects. Christina holds a Bachelors of Landscape Architecture from Virginia Tech and has more than twelve years of experience in cultural landscape preservation and design. She previously worked as a Landscape Designer and Historic Preservation Specialist for Commonwealth Heritage Group (formerly John Milner Associates).

Heather Warren

Job Titles:
  • Collaborative Consultant
With a background in literary book publishing, editing, and writing, Heather Warren brings an attention to research and carefully crafted narrative to the practice of historical landscape architecture. Heather received her BA in English from Kenyon College and her Masters of Landscape Architecture from the University of Virginia. For more than twenty-five years, Heather has worked closely with interdisciplinary teams of designers and historians in developing historic design projects for such important sites as Monticello, the Thomas Jefferson Memorial Foundation, and The University of Virginia. Heather is currently applying her specialized skills in research, site analysis, documentation, and storytelling to several cultural landscape projects for the University of Virginia as well as the National Park Service as collaborate consultant to Liz Sargent HLA.

Jacqueline Taylor

Job Titles:
  • Collaborative Consultant
  • Researcher and Writer
Jacqueline Taylor is an award-winning researcher and writer with twenty years experience working as an architectural historian and cultural landscape specialist. She has led innovative preservation efforts in support of revitalization of large and small American cities, advocated for the significance of vernacular minority sites, and authored numerous reports for national heritage properties across the United States and in Great Britain. Jacqueline received an MA in architectural history and a PhD in art and architectural history from the University of Virginia. As well as working in public practice she has taught at several institutions of higher education including the University of Virginia, Tulane University and Virginia Polytechnic. Her research spans the urban environment and art of 19th and 20th century United States with a focus on race and gender. She has presented her work publicly in the US, Europe and the UK, published widely including in edited volumes and anthologies, with the University of Virginia Press, Oxford University Press, and Routledge.

Jane Jacobs

Job Titles:
  • Architect
Jane Jacobs is a historical landscape architect with more than twenty-five years of experience practicing landscape architecture in Kentucky, South Carolina, and Virginia, specializing in preservation of cultural landscapes, master plans for historic sites and implementation of design and construction projects on historic sites. Jane is currently a collaborative consultant with interdisciplinary teams including historic landscape architects, landscape architects, architects, engineers, material conservationists, and historians. Jane has worked extensively with the National Park Service on projects in various regions of the country. She has expanded her work on cultural landscape reports and other preservation documents to include expertise in NEPA compliance and has authored a variety of Environmental Assessments for historic sites and contributed to team efforts for Environmental Impact Statements. Jane has also prepared numerous treatment plans and conceptual design alternatives within the context of CLRs, that meet required standards for universal accessibility while meeting objectives of park management for future visitation to historical properties and cultural landscapes. Jane received her BA in Environmental Design in Landscape Architecture from the School of Design at North Carolina State University and her Masters of Landscape Architecture from Cornell University. After receiving her Masters degree, Jane served as Assistant Professor of Landscape Architecture for eleven years with Rutgers University and the University of Virginia.

Jen Trompetter

Job Titles:
  • Landscape Architect
Jen Trompetter is a landscape architect and award-winning designer with more than eighteen years experience preparing cultural landscape documentation, master plans, concept plans, and schematic design through construction drawings for parks and historic properties throughout the United States. She has served as a project manager overseeing the construction administration of complex projects that sensitively combine preservation planning with discreet design interventions. Jen combines strong graphic and writing skills in the preparation of integrated studies that establish the basis for appropriate rehabilitation of historic landscapes. She has also taught extensively in the landscape architecture department at the University of Virginia's School of Architecture. Prior to joining LSHLA, Jen worked at Nelson Byrd Woltz (NBW) Landscape Architects and D.I.R.T. studio where she designed and managed important cultural landscape projects. She received an undergraduate degree in the History of Art and Architecture from the University of California, Santa Barbara, and received her Masters of Landscape Architecture from the University of Virginia.

Kevan Klosterwill

Job Titles:
  • Collaborative Consultant
  • Writer, Researcher
Kevan Klosterwill is a writer, researcher, and landscape designer. He holds a PhD in the Constructed Environment from the University of Virginia and degrees in landscape architecture from the University of Georgia. He also holds a BLA and MLA from the University of Georgia. Kevan has written articles for academic journals on landscape history and theory; his writing has also appeared in Landscape Architecture Magazine. His research interests include historical and contemporary approaches to human-animal relationships in the landscape, climate-responsive design, and utopian planning. Kevan is also currently developing a book on Warren H. Manning, an early environmental planner and landscape architect known especially for his expansive National Plan vision prepared in the early twentieth century. In addition to his writing and research, Kevan previously worked as a Park Planner for Athens-Clarke County, Georgia.

Nell Boeschenstein

Job Titles:
  • Collaborative Consultant
Nell Boeschenstein is landscape historian and Masters Candidate in Architectural History with a certificate in Historic Preservation at the University of Virginia. Since 2020, Nell has interned with Liz Sargent HLA, where she has assisted with a variety of projects relating to cultural landscape documentation, landscape history and interpretation, and National Register nominations at sites such as Zion National Park in Utah, President's Park in Washington, D.C., and Shaker Village in Kentucky. Having worked previously as a writer, editor, teacher, and journalist focused on the intersection of American history and landscape, she brings a strong writing and storytelling background to bear on her work in the design field. Her writing has been published in outlets such as Granta, The Oxford American, The Kenyon Review, and The Guardian among others, and she worked previously at BackStory with the American History Guys, Fresh Air with Terry Gross, and Sweet Briar College. Nell received her B.A. in English from Dartmouth College and her M.F.A. in nonfiction writing from Columbia University.