Mark Ellis Designs is a boutique interior design firm based in the coastal town of Bellport, New York, specializing in upscale residences in the Hamptons, Long Island, and New York City.

Mark began his design career in the retail industry, directing the visual merchandising programs of such specialty retailers as Brooks Brothers, Eddie Bauer and After Hours Formalwear. Making the transition out of retail in 2011, Mark began his interior design career with a Hamptons-based firm designing for and managing multiple upscale projects throughout the area and New York City.

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Mark Ellis Designs was launched in 2016 with an emphasis on designing a comfortable and casually chic environment by incorporating a mix of neutrals, color and complementary elements to provide a warm, welcoming vibe.