Perianth Interior Design has been in existence since 1996. Hilary Unger, the principal of the firm, is a graduate of both the University of Rhode Island and New York School of Interior Design. She started the company while she was still at NYSID.

Education and field experience has shaped, taught and inspired Hilary in different ways. "I love to take a project from the beginning of the design process through to completion!" This process includes spatial and cosmetic design development, construction and installation of products and furnishings. The firm has prospered by working with clients on both residential and commercial projects.

Perianth is focused on giving its clients the best service, value, style and comfort possible. The end product reaches the goals set forth initially and is aimed to reflect the clients' personality.