Helen Koss Interiors

Helen Koss Interiors — Sofia, Bulgaria Founder-led boutique studio specializing in strategic, minimalist, and emotionally intelligent interior design. At Helen Koss Interiors, we create timeless, neutral, and highly functional spaces shaped by clarity, intention, and deep respect for the client’s lifestyle. As a founder and principal designer, Helen brings a unique combination of architectural expertise, color psychology, and strategic project leadership, ensuring every project is both aesthetically refined and operationally seamless. We design interiors that feel calm, modern, and deeply personal — guided by a signature aesthetic rooted in minimalism, soft-lit atmospheres, and Art Nouveau influences. Our work spans residential and boutique commercial environments, with a focus on full-home transformations, renovations, and complete furnishing concepts. Clients choose us for our structured process, transparent communication, and ability to manage complex projects with diplomacy and precision. From concept to installation, we oversee every detail, collaborating with trusted contractors and artisans to deliver spaces that elevate daily living. Whether you’re renovating a city apartment, refreshing a family home, or building a new space from the ground up, we help you make confident decisions, avoid costly mistakes, and enjoy a design journey that feels clear, organized, and inspiring.