Who We Are

Allison Ong Shreffler, Architect + Designer

Allison Ong Shreffler attended the Pennsylvania State University where she received her Baccalaureate Degrees in Science and Architecture. She was the design lead for many projects early in her career, which included residential, commercial, religious, and transportation projects. She was promoted as the Project Manager and Architect for multiple projects upon receipt of her Professional license.

In 1995, Allison founded AOS Architect where she provided architecture, interior design, and construction administration services to both residential and commercial clients. She simultaneously co-founded a Design/Build company servicing the restaurant and hospitality industry. Her designs and vision were instrumental in elevating the company’s full service reputation by providing a “signature” architectural brand for each establishment.

Allison participated in many community organizations and was appointed to the planning board by the Mayor of River Edge, NJ for several years. Her recommendations for appropriate planning, zoning, and aesthetic issues were sought after and requested throughout the community.

Allison’s expertise as a Professional Architect and Interior Designer encompasses the many facets of architecture, design, and construction. She provides her clients with designs that are delicate balance of aesthetics, function, cost, constructability, and sustainability.

After relocating to Central PA in 2008, Allison was hired as the Principal Architect in Charge at an Architecture/Civil/Survey Engineering firm for several years before reestablishing her own architectural and interior design practice.  Here, she continues to serve her NJ and PA clients as well donating her time to mentor young professionals, is a contributing editor for Central Keystone Living Magazine, and is an active member of the Home Builders Association of Metropolitan Harrisburg, American Institute of Architects, American Society of Interior Designers, and National Kitchen and Bath Associations.

In 2021, Allison Ong Shreffler, Architecture & Design LLC received certification as a Small Business, Women Owned, and Diversity Owned Business. 

Most recently, Allison Ong Shreffler, Architecture & Design LLC was an Honoree for the Inaugural Leadership in Construction Award by the editors of Central Penn Business Journal. 


Matthew Shreffler, Architectural Designer & Intern Architect

Matthew graduated from The Pennsylvania State University with a Bachelor Degree in Architecture. His interest in building and artistic eye for detail began early in his youth with Lego building and creative artwork. He began interning with the firm since graduating from Central Dauphin High School. His high tech education and knowledge with laser printing, 3D modeling and visualization is a welcome skill that helps us to provide our clients with a well planned and executed final product. 

He enjoys his spare time exploring his passions in Art, Architecture, music, and sports. He also enjoys culinary adventures and loves to travel.