Logo for Easton Campbell Interiors featuring a stylized emblem with overlapping initials and the text 'Easton Campbell Interiors' in cursive font.
Logo for Easton Campbell Interiors featuring the company's name and a monogram emblem with intertwined letters E, C, and I.
Logo with the word 'Interior' written in stylized script above the phrase 'Easton Campbell' and the word 'INTERIORS' underneath in capital letters, with a circular emblem containing stylized initials at the top center.
Logo with text 'Easton Campbell' in cursive font, with a circular emblem containing the initials 'E C' at the top, and the word 'INTERIORS' in uppercase below.
Logo for Easton Campbell with a stylized emblem and the text 'Easton Campbell Interiors'.

identity rooted in the meeting of two worlds — the old-school sophistication of New York and the independent spirit of Montana.

Easton Campbell Interiors is a residential design studio working between Montana and New York. We take on a limited number of projects each year, guiding clients from the first walk-through to the final placed object. Every detail is held to the same standard.

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A kitchen countertop with a wooden bowl of green limes, a glass decanter, a framed picture of a building, a small tray with jars, and a sliced lime with a knife on a cutting board.
Decorative display of framed photos, ceramic pots, and real carrots arranged on dark wooden stairs in a home interior.

Our Expertise

You don't need a designer to fill a house. You need one to decide what belongs in it. Easton Campbell directs primary residences and second homes from early space planning through final styling, working with architects and builders from the earliest drawings. Everything is chosen. Nothing is announced.

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A fireplace with decorative tiles border, a large potted plant with green leaves, and a collection of books, vases, and a chessboard on the dark wooden floor.

  • "Working with Cassidy was the best decision we made for our project. She has an unbelievable eye for detail, but what I appreciated most was how easy she was to work with. She pushed us slightly out of our comfort zone in the best way possible, and the end result is a space that feels sophisticated but 100% us. I’d recommend her to anyone in a heartbeat.”

    — KR, New York

  • “Working with Easton Campbell was an absolute game-changer. Her approach from beginning to end felt deeply curated and intentional—not predictable, or trendy for the sake of trendy, and definitely not cookie-cutter. She transformed my space into an office that is warm, luxurious, functional, and elevated. She has an incredible eye for all the details, from textures to furnishings and finishes. The end result was modern and timeless, and a space that feels completely personal to me. She is an exceptional listener, and was able to really get a sense of what I wanted, all the while pushing creative boundaries, and opening my mind to a finished product that felt better than I could have imagined. I cannot recommend her highly enough.”

    — MN, Montana

  • “Cassidy was an absolute pleasure to work with. She sat with our entire family to note how each person individually envisioned the space to be ideal for them. She asked questions about our color and design preferences and aversions, and what activities we liked to do as a family. She wanted to know who we were, where we were from, and what was most important to us in life. The space is optically undeniably gorgeous and meticulously designed, with no detail left undiscovered, but the big differentiator is the subtle personal touches. She was diligent in providing updates, listening to our feedback, and communicated often and clearly. Cassidy made our house a home, and we’re grateful to her every time we walk in the door.”

    — PD, New York

Two wall-mounted lamps with brown shades and brass fixtures above a wooden side table. The table holds a stack of books, a decorative silver box, and a pair of sunglasses.

The Studio

Cassidy Hayes grew up in Montana, where her family has lived for five generations, then trained at the Rhode Island School of Design and spent her early career in New York, absorbing the pacing, discipline, and material fluency of the city's best interiors. Easton Campbell Interiors is the studio she built to hold both educations at once — Montana's authenticity and New York's sophistication, treated as complementary influences rather than opposing identities. That shows in the details: antiques and custom pieces sourced through dealers and makers on both coasts, coming together to create a home that is unlike any other.

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Work With Us

The studio takes on a small number of residential commissions each year, from full-service design to focused consultations. We begin with a conversation about the house, the people who live in it, and what the rooms should become.

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