About Perianth

Perianth Interior Design is a boutique firm dedicated to creating bespoke and harmonious interiors for residential and light commercial spaces from Eastern Pennsylvania to New York City. With roots in Manhattan and over 29 years of experience designing for discerning clients, we bring a sophisticated approach and a deep understanding of timeless, functional design.

Through meticulous attention to detail and a collaborative process, we deliver spaces that are elegant, inviting, and a true reflection of the people who live and work in them. Specializing in full-home transformations, we work closely with clients, contractors, architects, and artisans throughout construction and renovation projects to ensure every detail aligns with their vision. From spatial planning and custom furnishings to thoughtfully integrated finishes, each design is tailored to reflect the client’s unique style and needs.

Our work has been featured on Good Day New York as well as in Elle Decor, The New York Times, The New York Post, and other publications.

Your home is not simply a reflection of your taste.

It directly inspires your energy, creativity and productivity.

About Hilary

At the helm of Perianth is Principal Designer Hilary Unger, NCIDQ-certified, who recently relocated to the Lehigh Valley after 30 years in Manhattan. Hilary specializes in creating unique, livable, and luxurious spaces, always with a sophisticated touch.

She values an interactive relationship with her clients, where they feel comfortable sharing their desires and ideas, and she translates them into thoughtful, distinguished design. This collaborative approach enables Hilary and her team to create spaces that fully meet — and often exceed — expectations.

Her portfolio spans imaginative playrooms, elegant family homes, cleverly designed apartments, and select light commercial spaces, each blending warmth, functionality and a refined aesthetic.

What our Clients Are Saying

Our clients’ words reflect the care, collaboration, and creativity we bring to every project

  • "I had a truly wonderful experience using Perianth's Hilary Unger as my designer. Hilary was EXTREMELY easy and she accomodated herself to my very busy schedule. I can't recommend her enough."

    Pamela

  • "...Lew Loves the apartment! He LOVES the furniture and can't decide if her prefers this seat or the reclining leather chair. He said this apartment is a perfect blend of his own familiar belongings with my new. We did it!"

    Sue

  • "We had a terrific experience with Perianth! I was very hesitant to hire a decorator; I've done it before and found it unsatisfying, expensive and not effective at figuring out how to make my place look like "me". This was the complete opposite of that experience! All in all, a fabulous experience and my apartment looks great, coordinated and beautiful, but not "precious" or false. If I move, I suspect she will be my first call."

    Rebecca

  • "Hilary Unger really listens to you. She doesn't have a set look like some designers, but finds out what a client's life looks like and provides a perfect space as a backdrop."

    Elana

Where vision meets possibility. Every room tells your unique story.