George L. Claflen, Jr. FAIA, LEED AP
Master of Architecture, Master of City Planning: University of Pennsylvania
Bachelor of Architecture: Massachusetts Institute of Technology


George L. Claflen, Jr. FAIA, is an architect, urban designer and teacher who has practiced in Philadelphia for more than thirty years. He has worked as Principal-in-Charge of numerous projects for the City of Philadelphia Capital Projects Division, completed preservation work with Fairmount Park Historic Preservation Trust and with Cheltenham Township, and had extensive public art project experience with Fairmount Park Art Association. In 2014, AIA Philadelphia presented George with its John Frederick Harbeson Award, presented annually to a long standing member of the architectural community to recognize their significant contributions to the profession.


He worked closely with the staff of the Philadelphia City Planning Commission on the Center City parking study and the recent evaluation of the Waterfront Redevelopment District zoning provisions as implemented along the North Delaware Waterfront. Claflen Associates completed the Skyplane Access Study, a method of regulating the bulk of buildings that was adopted into the Philadelphia Zoning Code. Skyplane received an Architectural Excellence Award from AIA Pennsylvania in 2014, and a Design Excellence Award from AIA Philadelphia in 2013.


A founding member of the Design Advocacy Group of Philadelphia (DAG), George Claflen compiled and edited DAG’s Reform Agenda for Planning and Design Review in Philadelphia and participated in the Building Industry Association project that articulated the case for zoning reform. His background also includes extensive involvement with panels, lectures, and juries and an active publication history. He is also a steering committee member of the MIT Enterprise Forum in Philadelphia.


He was a professor of Architecture at Temple University where he was the chair of the program from 1983 to 1989. He was president of the American Institute of Architects, Philadelphia Chapter in 1997 and was elected a fellow of the American Institute of Architects in 1999. He has worked for firms in London, England, Cambridge, MA, New Jersey, and Philadelphia. In the public sector he has worked for the City of San Francisco Planning Department and the United States Environmental Protection Agency Region III, receiving special recognition of high quality performance from the EPA in 1989.





Maribeth Rentschler

Senior Project Manager

Bachelor of Architecture, Drexel University


As a Senior Project Manager, Maribeth is managing and detailing projects including renovations for the City of Philadelphia Health Centers, a LEED designed Recreation Center, and historic roofing replacements for the Fire Department. In addition to these projects, Maribeth is working with clients on projects varying in scope and scale which include: a feasibility study and master plan; a residence with art gallery; and a restaurant. She started working at Claflen Associates full time while completing her architectural degree as an evening student at Drexel University. She has worked in two firms previous to joining Claflen Associates. The experience she gained while in school was not limited, but rather she developed a full skill set in all phases of design.


Prior to joining Claflen Associates, Maribeth worked at Martin Architectural Group, where she designed and managed several adaptive re-use projects from feasibility phase, through construction administration. She managed and coordinated a team of consultants through many in-field issues that arose due to demolition revelations. Maribeth has also had experience successfully negotiating building variances in the city of Philadelphia and has received neighborhood and zoning approval for projects.


Maribeth managed a team of designers, engineers and contractors to revitalize an existing retail hub into a lifestyle center in Tred Avon, Maryland.  The goal was to increase customer draw by creating a variety of amenities with dining and performance space in the defunct outdoor courtyard. This included new landscape and hardscape design in addition to programming adaptive outdoor space for current and projected use.


Maribeth started her architectural career as an intern at FVHD Architects and Planners, where she completed several comprehensive feasibility studies for school districts in the state of New Jersey. These studies included the survey of schools and documentation, as well as cost analysis for renovations and new construction.  She was an integral part of the approval for the design of the West Windsor Elementary School Addition through the models and renderings she executed for the school board.



Alisa Fox
Office Manager
MFA, Book Arts & Printmaking,University of the Arts
MS, New Media Arts & Sciences, Indiana University
BFA, Herron School of Art & Design
BA, Nebraska Wesleyan University

Alisa is responsible for implementing organizational strategies to facilitate office operations, and for contributing to the layout and design of proposals and brochures. She handles scheduling, database management, corrsepondence, and accounts receivable, as well as consulting on presentations. In addition to administrative skills, her background includes marketing and graphic design work for newsletters, brochures, branding projects, other collateral materials and websites, with proficiency in a wide range of software. Alisa also actively exhibits print, book, and mixed media art.