- AEM Architects
 - Reading - Serves a variety of clients, including churches and schools. - Alta Design Associates, Inc.
- Fort Washington - Full service architectural, civil, and geotechnical engineering firm specializing in custom homes and light commercial construction in the Delaware Valley.
- AP3C Architects
- Philadelphia - Specialties include health care, corporate, renovations, and institutional design.
- Architectural Concepts
- Exton
- Becker Morgan Group
- Odessa - Provides architecture, engineering, planning, and surveying services.
- David Mayernik Ltd.
- Allentown - Classical architect providing international design consulting including campus and town planning as well as furniture and fresco designs.
- Design Associates, Inc
- Broomall - Design and construction of restaurants, churches, residences, gymnasia, offices, and manufacturing facilities.
- DPK&A
- Philadelphia - Specialties include: movement systems, pedestrian traffic, retail development, transportation facilities, office design, adaptive reuse, and historic restoration.
- Erdy McHenry Architecture
- Haddonfield - Architecture and interior design firm specializing in a solutions-based approach to design.
- Ford Farewell Mills and Gatsch Architects
- Princeton - Specializing in new design, preservation, interiors, and planning of cultural, educational, public, religious, and residential facilities.
- Francis Cauffman Foley Hoffmann Architects Ltd. and Diversified Interior Design Inc.
- Philadelphia - Major areas of concentration are healthcare, research and development laboratories, pharmaceutical manufacturing, communications, and corporate office planning. also have ongoing projects in long term care, hospitality and multi-family residential.
- GBQC Architects
- Philadelphia - Offers a range of architectural and interior design services.
- Giacomelli Lichtman Partnership
- Cheltenham - Engaged in government, education, municipal, commercial, and residential projects.
- Hayden Architecture + Urban Design
- Newtown
- Hillier Architecture
- Princeton - Solutions for the global community.
- Holland Architects Ltd
- Philadelphia - Services include: residential, institutional, commercial, and educational.
- Jag Deshpande Associates
- Wilmington - Engaged in projects for state and county governments, universities, private developers, and corporations.
- Jefferson Moon, Architect
- Haddonfield - Specialties include schools, churches, and custom homes.
- John Blatteau Associates
- Philadelphia - Providing historical and classical architecture including interior design and restoration services for financial, corporate, educational, and healthcare.
- John Milner Associates, Inc.
- West Chester - Historic architecural and cultural conservation services.
- Kehrt Shatken Sharon Architects
- Princeton - Designs new buildings, renovations, interiors, and planning studies.
- KieranTimberlake Associates
- Philadelphia - Founded by Stephen Kieran and James Timberlake. Projects include programming, planning, and design of all types of new structures and their interiors, as well as the renovation, reuse, and conservation of existing structures.
- Maltbie Associates
- Mount Laurel - Offers services in the areas of design, fabrication, and project management for museums, visitor centres corporate exhibits.
- Martin Architectural Group, The
- Philadelphia - Specializes in land planning, community planning development, and family homes.
- Moeckel Carbonell Associates Inc.
- Wilmington - Full service firm with an expertise in the design, reuse, and restoration of corporate buildings.
- Muhlenberg/Greene Architects, Ltd.
- Reading - Full service firm.
- Nelson Group
- Philadelphia - Architecture, engineering, interior design, and workplace services.
- PDK Architects
- Philadelphia - Offering expertise in commercial, residential, health care, and assisted living design.
- S.J. Elton, Architect
- Bethlehem - Project types include: commercial, residential, retail, fire and EMS design, accessibility, and 3D modelling and rendering.
- Spiezle Architectural Group
- Newtown - Design group for commercial, educational, and municipal facilities.
- Spillman Farmer Architects
- Bethlehem - Offering full architectural, campus planning, engineering, and interior design services.
- Synergetics Architects
- Reading - Experienced in commercial, residential, industrial, and institutional projects, incorporating historical renovations when applicable.
- Tevebaugh Associates
- Wilmington - Commercial architecture and interiors.
- TimHaahs Engineers and Architects
- Blue Bell - Services include architectural design, structural engineering, parking consultation, project management, and 3D rendering/animation.
- Voith and Mactavish Architects
- Philadelphia - Specializing in master planning, interior design, historic preservation, and landscapes.
- Wallace & Watson - Associates, P.C.
- Allentown - Specializing in medical, religious, and eductional facilities.
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