Firm Profile – Landscape Architecture Firm
Maryland, Virginia, and Washington, D.C.
DFB – Donovan • Feola • Balderson & Associates, Inc. - was established in 1955 by the late Thurman D. Donovan as T. D. Donovan, Landscape Architects. The current officers, Andrew H. Balderson and David B. Post, have been associated with the firm since 1971 and 1984, respectively. Richard T. Feola retired in 2001 after 36 years with the firm.Our company offers professional landscape architecture and site planning services that accommodate the needs of our diverse and discerning clientele. We have the capacity to execute large-scale landscape projects and the commitment to give each client individual care.
Landscape Architecture
As an Award Winning Landscape Architecture Firm, we are recognized as a firm that creates mature landscapes that gracefully evolve over time. Our experienced landscape architects select the appropriate, large specimen trees and shrubs to achieve the desired scale and appearance of a mature landscape.Site Planning
DFB & Associates, Inc. is instrumental in the site planning process of many commercial, residential, public works, historic, and institutional projects. When a project poses complex challenges, our 55 years of experience is invaluable.Additionally, we concentrate on sustainable landscapes that are simultaneously aesthetic and eco-friendly. Our landscape services include Forest Conservation Planning, Sustainable Landscape Design, & Green Roof Design.
Multidisciplinary Collaboration
DFB & Associates, Inc. collaborates with other disciplines to maximize the quality of your landscape. We work with architects and engineers, environmental consultants, arborists, builders and contractors, sculptors, and fellow landscape architects.Call 301-258-7778 or click for expert Landscape Architecture and Site Planning.

Andrew H. Balderson has been a principal partner with Donovan, Feola, Balderson & Associates since 1977. He is a registered landscape architect in Maryland and 8 other states.