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Allison Ong Shreffler, Architect / AOS Architect

Allison Ong Shreffler, Architect / AOS Architect

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About Us

8x Best of Houzz winner
Award winning
Woman owned
Harrisburg Metro's Leading Interior & Architectural Design Studio
BEST OF HOUZZ WINNER - Allison Ong Shreffler, Architect/Designer has garnered multiple awards for her architecture and interior design work. Allison’s unique expertise as both a Professional Architect and Interior Designer provides her clients with designs that are delicate balance of aesthetics, function, sustainability and cost. As a result, her clients are provided with designs that are both beautiful and functional. Allison Ong Shreffler was born and raised in Northern New Jersey, and attended the Pennsylvania State University where she received her Baccalaureate Degrees in Science and Architecture. She interned at a mid-sized architectural firm in North Jersey and was hired full time upon graduation. 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 signature brands for each establishment. Allison participated in many community organizations and was appointed to the planning board by the Mayor of River Edge for several years. Her recommendations for appropriate planning, zoning, and aesthetic issues were sought after and requested throughout the community. In 2008, she relocated with her family to Central Pennsylvania and was the Principal Architect in Charge at an Architecture/Civil/Survey Engineering firm for several years before reestablishing her own architectural practice in Central PA. Here, she continues to serve her NJ and PA clients as well donating her time to speak at Junior Achievement mentorship programs and is a contributing editor for Central Keystone Living Magazine. Recently, Allison Ong Shreffler Architect/Designer was awarded "Simply the Best Architect", "Best Exterior Design", "Best Interior Design", and "Reader's Choice" awards in the Harrisburg area. Her "Lewisberry Prairie" project was featured in Susquehanna Style and her "Rich Valley Conversion" project was featured in Harrisburg Magazine.

Services Provided

3D Rendering, Accessory Dwelling Units (ADUs), Architectural Design, Architectural Drawings, Attic Conversion, Barn Design & Construction, Basement Design, Basement Remodeling, Bathroom Design, Building Design, Custom Homes, Deck Design, Drafting, Energy-Efficient Homes, Floor Plans, Garage Design, Green Building, Guesthouse Design & Construction, Handicap-Accessible Design, Home Additions, Home Extensions, Home Gym Design & Construction, Home Remodeling, Home Restoration, House Plans, Kitchen Design, Kitchen Remodeling, Landscape Plans, Laundry Room Design, Log Home Construction, Mudroom Design, Multigenerational Homes, New Home Construction, Outdoor Kitchen Design, Pool House Design & Construction, Project Management, Space Planning, Staircase Design, Structural Engineering, Sustainable Design, Tiny House Construction, Universal Design, Custom Home, Construction Drawings, 3D Home Design, Remodeling, Interior Design, Furniture

Areas Served

Camp Hill, Colonial Park, Dauphin, Enola, Grantville, Halifax, Harrisburg, Hershey, Hummelstown, Lemoyne, Linglestown, Lower Allen, Marysville, Middletown, New Cumberland, Palmdale, Paxtang, Paxtonia, Penbrook, Progress, Shiremanstown, Skyline View, Summerdale, Union Deposit, West Fairview, Wormleysburg, Mechanicsburg, Carlisle, Lewisberry


2017 Pyramid Award-Best Architect, 2017 Pyramid Award-Best Collaboration,2017 Simply the Best Harrisburg Magazine,2016 Reader's Choice Harrisburg Magazine 2016,Pyramid Awards Best Interior Design,2015 Pyramid Awards Best Exterior Design,2015 Pyramid Awards,Best Interior Design


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Business Details

Business Name

Allison Ong Shreffler, Architect / AOS Architect

Phone Number

(717) 884-9808

Harrisburg, PA 17112

Typical Job Cost

$5,000 - +

Costs for professional architectural and interior design services vary depending upon the scope of work. Contact my office for more information or visit my website at

License Number

NJ & PA Registered Architect


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Contact Allison Ong Shreffler, Architect / AOS Architect
Allison Ong Shreffler, Architect / AOS Architect
Average rating: 5 out of 5 stars

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