Development & Construction

  • Catherine Pfeiffenberger

    Managing Director, Head of Development and Construction

    Catherine Pfeiffenberger is a Managing Director, Head of Development and Construction at Jamestown.  Ms. Pfeiffenberger joined Jamestown in 2019 to head up the development and construction unit.  She works with the team to expand the brand by focusing on development opportunities where Jamestown can create new, exciting places.  In her previous role at Skanska, Ms. Pfeiffenberger was a founding member of the development group where she helped to establish the brand and grow the platform throughout the United States.  Prior to her time at Skanska she held a number of positions in finance, public-private partnerships and economic development, including Managing Director at Lehman Brothers.  M.s Pfeiffenberger is the past Chairman of the Board of the Association of Foreign Investors in Real Estate, and has been involved with the Urban Land Institute Responsible Property Investing Council and the Green Building Advisory Committee for the New York Academy of Sciences.  She earned a Bachelor of Arts in Economics from the State University of New York at Albany and completed an executive leadership program at IMD in Switzerland.

  • Bettie Gebara


    Bettie Gebara is the Director of Development and Construction and oversees teams in New York, Boston and San Francisco managing a wide range of construction initiatives throughout Jamestown’s portfolio.  She joined Jamestown in 2006 to lead the company’s construction activities and support both the Acquisitions and Asset Management Departments.  Before joining Jamestown, Ms. Gebara held senior positions at US Cost, Rosser International and Gleeds USA, excelling in roles that encompassed all aspects of owners representation including estimation, project controls and new business development, and was heavily involved in governmental and municipal initiatives.  She graduated from the Georgia Institute of Technology with a Bachelor of Science in Building Construction, and also earned her Certified Cost Consultant accreditation.

  • Dana Griffin


    Dana Griffin is the Director of Development at Jamestown.  Mr. Griffin joined the company in 2013 as Vice President, Development and Construction.  He oversees development opportunities on select assets nationwide.  Mr. Griffin’s primary responsibilities include advancing the strategic vision for an asset, determining feasibility, and establishing scope and budgets to maximize overall asset value.  Prior to joining Jamestown, he was a Senior Vice President at Jones Lang LaSalle.  Mr. Griffin has an extensive development and construction background, with past assignments including life science work, new building infrastructure, a wide array of repositioning work, and leading entitlement efforts.  He currently serves on the boards for the Back Bay Association, the Seaport TMA, A Better City, and the Boston Municipal Research Bureau.  Mr. Griffin received a Bachelor of Science in Civil Engineering from Worcester Polytechnic Institute.

  • Ryan Tunstall

    Senior Vice President

    Ryan Tunstall is a Senior Vice President of Development and Construction at Jamestown.  Mr. Tunstall is focused is on Jamestown’s Northeast portfolio, including properties in New York and Boston.  He also oversees the planning and implementation of capital improvement projects, landlord work and tenant improvement projects.  Prior to joining Jamestown, Mr. Tunstall was a Development and Construction Manager for Procida Realty and Construction, a New York-based developer and contractor, where he oversaw the completion of over 700 ground-up residential units in New York City.  He received a Bachelor of Arts in Architectural Studies from Brown University and a Master of Science in Real Estate Development from Columbia University.

  • Frances Bohn

    Vice President

    Frances Bohn is a Vice President of Development and Construction at Jamestown.  She leads the development and implementation of value-added projects, capital improvements, landlord work and tenant improvement projects, with a focus on Jamestown’s Southeast and Washington D.C properties.  Prior to joining Jamestown, Ms. Bohn was a Project Manager for Hardin Construction Company, a Georgia-based contractor, with a specialty in the higher education real estate market.  During her time there, she completed projects for Georgia State University and Young Harris College.  Ms. Bohn is a LEED Accredited Professional and is active in her local chapter of the Urban Land Institute.  She received both a Bachelor of Arts in Classical Studies with a minor in Landscape Architecture and a Master of Science in Building Construction from the University of Florida.

  • Trung Doan

    Vice President

    Trung Doan is a Vice President of Development and Construction at Jamestown.  He oversees projects on properties in San Francisco.  Mr. Doan previously served as a Senior Project Manager with Nova Partners, a firm specializing in construction management on projects in the biotech, commercial, technology, religious, and healthcare markets.  He has also managed projects as a general contractor in the San Francisco Bay Area, Minnesota, and Texas for various clients in the commercial and retail sectors.  Mr. Doan is a LEED accredited professional and holds degrees in Biochemistry from the University of Michigan and Construction Management from Colorado State University.

  • Jonathan Myers

    Vice President

    Jonathan Myers is a Vice President of Development and Construction at Jamestown.  He oversees the architectural design and implementation for tenant and capital improvement projects across the nationwide portfolio of assets.  Prior to joining Jamestown, Mr. Myers worked for Praxis3, an Atlanta-based firm specializing in the civic, institutional, and mixed-use residential markets.  Along with experience in the construction and financial consulting industries, he has a diverse background in realizing the vision of a broad range of new construction and adaptive re-use project types.  Mr. Myers is professionally licensed and is an active member in the local chapter of the American Institute of Architects.  He received dual Bachelor’s degrees in Civil Engineering and Mathematics from Vanderbilt University and a Master’s of Architecture from the Georgia Institute of Technology.

  • Colleen Sheehan

    Vice President

    Colleen Sheehan is a Vice President of Development and Construction.  Her primary focus is on Ponce City Market, where she oversees all office, restaurant and retail tenant improvement projects as well as capital improvement projects for the base building.  Ms. Sheehan also managed all capital projects completed as part of the reposition of 999 Peachtree by Jamestown.  Prior to joining Jamestown, she was Development Manager for Cousins Properties, an Atlanta-based real estate investment trust and development company.  Ms. Sheehan oversaw the tenant improvements and redevelopment projects at One Ninety One Peachtree Tower and was later responsible for oversight and management of all tenant improvements and capital projects for Cousins’ 4.2 million square foot Client Services portfolio of Class A office and retail.  She graduated from the University of Evansville with a Bachelor of Science in Mechanical Engineering.

  • Steve Simmons

    Vice President

    Steve Simmons is a Vice President of Development and Construction at Jamestown.  Mr. Simmons directs multiple projects at Ponce City Market.  With 30 years in the commercial real estate and construction market, he provides Jamestown with extensive management experience in diverse market sectors including hospitality, retail and office.  Prior to joining Jamestown, Mr. Simmons spent 25 years with Lend Lease, a leading international development company, serving as Senior Vice President for the Multi-Site Program Group and then began consulting with organizations and start-up firms to improve construction processes, implement cost reduction initiatives and develop additional clients.  He graduated from Murray State University with a Bachelor of Science in Civil Engineering and the Columbia Business School in Leadership Development.