About Us

Seriatim (Latin: in a series, in order) is New York’s leading professional organizing company, specializing in facilitating seamless transitions. 

Since 1999, our bonded and insured team has provided individualized care to hundreds of clients, ranging from single moms and senior citizens, to celebrities, royalty, and Fortune 500 companies.

Seriatim Founder and President, Sonya Weisshappel-Christy, has been a professional organizer for 15 years — though her skills in the field were tapped much earlier.  Having moved 7 times before turning 13 — in addition to losing a parent at an early age, battling learning differences, and later, raising her own children and stepchildren — cultivated a deep understanding of transitioning with ease — one that serves as the foundation of her work today.

A member of the National Association of Professional Organizers, the National Association of Women Business Owners, and the Employee Relocation Council, she is a sought-after public speaker, lecturing internationally on topics ranging from Helping Children with Learning Disabilities Get Organized and Preparing the Home for Twins, to Organizing the “Home Office“ and Staging Homes Successfully.  

Sonya Weisshappel, Seriatim President
Photo by Amanda K Photography

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