KATHERINE THOMAS INTERIOR DESIGN STUDIO

BASED IN COLUMBUS, OH | ACCEPTING PROJECTS NATIONWIDE

effortless style, blended aesthetics + thoughtful guidance

INTERIORS MADE TO BE LIVED IN

A woman with brown hair, sitting on a light-colored sofa in a living room, wearing a green sweater dress and tall dark brown boots. She has a thoughtful expression, with her chin resting on her hand. In the background, there is a mirror, a chandelier, a doorway, a window, and a vase of white flowers. 
Katherine Thomas

WELCOME

With a passion for transforming spaces into functional and visually appealing environments, Katherine brings a unique and innovative approach to interior design.


I approach each project with intention, combining simplicity and elegance, so that every space reflects the people who live in it. Serving clients throughout Columbus, OH and nationwide.

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Modern kitchen with white cabinets, a marble island, pendant lighting, and two windows showing a snowy landscape outside.

SERVICES

At Katherine Thomas Studio, we create spaces that reflect your personality and lifestyle. Each design is thoughtfully tailored, blending timeless materials, architectural detail, and functional beauty to bring your vision to life.

  • Katherine Thomas Studio can provide assistance throughout the entire duration of a project, starting from consulting with architects and builders to creating a personalized approach through finishes and decor. We specialize in transforming spaces into functional and aesthetically pleasing environments by incorporating furniture, fabrics, accessories and customized pieces specifically tailored to your space. We are capable of supporting and managing all aspects of a project, from the initial concept to its completion.

  • We partner with boutique businesses to create inviting, brand-aligned interiors that leave a lasting impression. From studios and salons to retail and hospitality spaces, our designs balance function and aesthetic, crafting environments that reflect your brand and elevate the client experience.

  • Includes Living Room, Family Room, Bedroom or Dining Room.

    This package is perfect for those who are looking to decorate a room, from start to finish, and need the help of an experienced designer. You can expect to receive a design board featuring furniture, artwork and accessories that suit your taste, space and budget; along with an easy-to-follow shopping list of all the items you’ll need! So if you have an empty room waiting to be transformed, a newly acquired property that needs furnishing or simply want a complete reinvention of your current decor style – this package is right for you!

    You will need to send us: room measurements, photos of your space, and any inspiration images.

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Featured projects

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Modern kitchen with white marble island, gold fixtures, hanging pendant lights, a window with snow outside, minimal decor, and four barstools.

ASBURY

Upper Arlington, OH 2025

A well-lit kitchen with white and wood cabinetry, a marble countertop island with a vase of greenery, a bowl of fruit, and pendant lighting, featuring a window with a view of trees outside.

THE LOCH

Dublin, OH 2024

Bright living room with a round coffee table, beige armchair, artwork above fireplace, window, and decorative items.

TEWKSBURY

Upper Arlington, OH 2025

  • I couldn’t be happier to have found Katherine to assist me with all of my design needs. She has helped me with all different types of projects, large and small. I appreciate her honesty so much. She provides solutions to make a vision come to life within my style, even if it’s not how I originally envisioned. She’s efficient and timely, and in addition to being fun to work with, she’s the nicest person you will ever meet.

    Melissa Y

  • Katherine is amazing! I’ve used her on new builds and big remodels, and she always nails it. Super responsive, creative, and works perfectly within budget. Her designs are stunning and elevated my projects beyond what I imagined. Efficient, detail oriented, and excellent value. a total game changer. Highly recommend!

    Andrew S

A woman with shoulder-length brown hair is looking at fabric samples and color swatches on a display board in a home decor store. 
Get in Touch

Let’s Begin

Every project starts with a conversation. Share your vision, and let’s create something meaningful together.

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