sustainability, it's what we know.

We take pride in having LEED Accredited Professionals on staff who will help improve your project’s overall sustainability. Every project is designed with longevity in mind. We understand that sustainability and adaptability are keys to the project’s success and to the Client’s Return On Investment (R.O.I).

we do it all, so you
don't have to.

Our services go beyond the drawing board. Rosenbaum Design Group is a full service professional design firm offering its clients Site Planning, Concept Development, Architectural, Structural, Mechanical, Electrical, Plumbing & Fire Protection Engineering and In-House Municipal Expediting services.



our blueprint for success

What makes us stand out?

top talent

Our pool of highly talented and experienced team members are some of the best in the business. They are dynamic and diverse and bring variety, innovative ideas and cost-effective solutions to the table. This allows us to minimize your project’s overhead and maximize its design appeal.

national &

We have national and international experience maintaining active professional licenses in most of the United States and supporting our international clients with design services worldwide.


We pride ourselves on fostering strong, long lasting relationships with our clients, consistently maintaining clear and concise communications from the project’s start to its finish.


Not many firms have made it to their 6th decade. As one of the largest firms on Long Island, we’re here today and we will be here tomorrow.
“As a firm we are committed to providing first-rate service along with design excellence.”
—Roy I. Rosenbaum