Photo Robert Powers, President Powers Preservation

Robert Powers


As President of Powers & Company, Inc., Robert Powers combines a thorough understanding of national, state and local historic preservation policies and programs with a strong background in architectural conservation. With over thirty-five years of diverse experience on preservation and conservation projects throughout the United States and abroad, Mr. Powers is recognized as a premier national expert on the interpretation and application of the Secretary of the Interior’s Standards for Rehabilitation in historic preservation projects.

In 1995, Mr. Powers founded Powers & Company and has led the firm on major preservation projects across 17 states with rehabilitation activity totaling in excess of $5 billion. He consults to developers, architectural and engineering firms, attorneys, and various organizations and agencies. Examples of his award-winning projects include the conversion of the iconic PSFS Building in Philadelphia into the Loews Hotel, the transformation of numerous abandoned industrial structures at the Philadelphia Naval Shipyard into the corporate headquarters for URBN, the adaptive reuse of former naval facilities into creative movie production studios within the Brooklyn Navy Yard and the rehabilitation of the former Winchester Repeating Arms Company complex in New Haven, Connecticut into market rate apartments.

In architectural conservation and materials testing, Mr. Powers acted as the Consulting Supervisory Conservator for the restoration and rehabilitation of the lavish interiors of the Pennsylvania State Capitol Building in Harrisburg. He has also completed materials analysis at such notable properties as the Los Angeles City Hall, the Smithsonian Institution in Washington, DC and numerous buildings on the University of Pennsylvania campus.

Prior to establishing his own firm, Mr. Powers worked as an architectural historian with the National Park Service (NPS) where he administered the Federal Historic Preservation Tax Incentive program and was responsible for the analysis of rehabilitation projects in 17 states. During his tenure with the NPS, his technical expertise in materials conservation was recognized by his selection to the Agra Heritage Project where he coordinated the overall assessments of the physical condition of the Taj Mahal and other World Heritage sites in and around Agra, India. In 1990, he received the prestigious National Park Service Albright Grant to evaluate masonry consolidation and cleaning processes in Scotland and England.

Mr. Powers did his master’s training in Historic Preservation at Columbia University and has a bachelor’s degree in American Studies from Union College. He is the author of three NPS Preservation Tech Notes and his article “The Lime Method in the United Kingdom” appeared in Stoneworld Magazine. Mr. Powers is a former Board Chair of the Preservation Alliance of Greater Philadelphia and is a current Board member. He is a member of US/ICOMOS, The National Trust for Historic Preservation and The American Institute for Conservation of Historic and Artistic Works (AIC). Locally, he serves on the Board of the Spring Garden Civic Association and sits on their Zoning Committee.


Logan I. Ferguson

Senior Associate

Logan I. Ferguson joined Powers & Company as an associate immediately after graduating from the University of Pennsylvania in 2006 with an M.S. in Historic Preservation. She previously completed her undergraduate coursework at Davidson College in Davidson, N.C., earning a B.A. in Art History in 2004.

Since joining Powers & Company, Logan has researched and written numerous National Register nominations, Historic Resource Survey Forms, National Historic Landmark nominations, and has completed many Federal Historic Tax Credit certifications and Section 106 applications.

While in school, Logan focused her education in the disciplines of architectural history, preservation planning and real estate development. Her thesis, Historic Preservation and Public-Private Partnership, focused on the restoration and reuse of historic public buildings by private developers.

 Prior to the completion of her Master’s Degree, Logan worked at a number of public and private institutions throughout the country, including the New York City Department of Parks and Recreation, the Greenwich Village Society for Historic Preservation, the Denver  Art Museum and Christie’s.

At the New York City Department of Parks and Recreation, Logan completed applications to the New York City Landmarks Preservation Commission, and researched and participated in recommendations for and conditions assessments of historic structures owned by the Parks Department. While at the Greenwich Village Society for Historic Preservation, she researched neighborhood, block and building histories of New York City to determine eligibility for Historic Districts throughout the City.

Additionally, Logan is experienced in ArcGIS, AutoCAD, Adobe Photoshop, Illustrator, InDesign and Dreamweaver.

Logan is also a member of the National Trust, the National Trust for Historic Preservation, the American Association of Museums, and the Urban Land Institute.


Kevin McMahon

Senior Associate

Kevin joined Powers & Company, Inc. as an intern in 2010, continuing in a permanent role after completing his M.S. in Historic Preservation at the University of Pennsylvania in 2011.  He previously earned a B.S. in the History of Architecture and Urban Development at Cornell University in 2008.

As an associate at Powers & Company, Kevin focuses on federal and state historic tax credit certifications, having successfully completed dozens of Part 1, 2 and 3 applications for a wide range of small to large rehabilitation and adaptive reuse projects. His approach to this work is rooted in a thorough understanding of the Secretary of the Interior’s Standards for Rehabilitation as well as a sensitivity to client needs. Kevin is also an accomplished architectural historian, having successfully nominated over twenty historic buildings, sites and districts to the National Register of Historic Places.

Kevin is experienced in AutoCAD, Geographic Information Systems (GIS), and Adobe Creative Suite.

In 2013, Kevin co-founded the Young Friends of the Preservation Alliance for Greater Philadelphia, an organization aimed at engaging young residents of the city in historic preservation issues. And, in 2015, he helped form PennPreserve, the first alumni organization of the University of Pennsylvania’s Graduate Program in Historic Preservation.

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Adrian Trevisan


Adrian Trevisan joined Powers & Company, Inc. in 2022, as an Associate. Adrian focuses on preparing National Register of Historic Places nominations for properties throughout the country and consults with owners/developers/institutions on the implementation of National and State Historic Tax Credits in their historic rehabilitations.  Prior to joining the company, he worked with several local organizations and nominated numerous properties to the Philadelphia Register of Historic Places including, Christian Street/Black Doctors Row Historic District, the John A. Hallahan Catholic Girls High School, and the Fox Motor Car Company.

Adrian holds an M.S degree from the University of Pennsylvania in Historic Preservation and has a diverse career history. Prior to joining Powers & Company, he was an architectural historian at a cultural resources management firm.  Before pivoting to the historic preservation field, Adrian worked in pharmaceutical marketing and management consulting positions in both the US and Europe. In addition to his degree from Penn, he holds an M.A. in International Relations and International Economics from Johns Hopkins University and, a B.A. in Liberal Arts from St. John’s College. He also served as a parachute infantryman in the 82d Airborne Division.