Tillotson Design Associates

Architecture and PlanningNew York, United States11-50 Employees

Tillotson Design Associates is a New York City–based lighting design consultancy operating within the architecture and planning sector. The firm positions itself as a global, women-owned practice focused on both interior and exterior lighting, delivering precise and innovative illumination across diverse environments. Founded in 2004 by Suzan Tillotson, the company brings together professionals with architectural and interior design backgrounds, including LEED-accredited experts.

Its client work spans corporate headquarters, universities, hotels, libraries, master plans, museums, parks, performance spaces, residences, restaurants, and retail environments. The organization has a global reach in its lighting design practice and is based in New York. In 2025, Suzan Tillotson was honored with the Lifetime Achievement Award at the LIT Lighting Design Awards, highlighting the founder's sustained impact in the field.

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