Diana Vallee

Manager of Accounts & Deal Operations

p: (289) 670-2012

e: diana@lisahartsink.com

With nearly two decades of experience in real estate operations, accounting, and administration, Diana plays a vital role in keeping both the team and each transaction running smoothly.

Quietly precise, ensuring every detail unfolds smoothly and with care.

“Always find a reason to laugh.”

Diana Hartsink is the steady force behind the scenes, ensuring every detail is handled with precision, care, and consistency.

With nearly two decades of experience in real estate operations, accounting, and administration, Diana plays a vital role in keeping both the team and each transaction running smoothly. As Manager of Accounts and Deal Operations, she oversees listing and deal paperwork, financial coordination, and operational processes, making sure nothing is overlooked and everything stays on track.

Diana is known for her reliability, attention to detail, and calm, approachable nature. She brings a strong background in business administration and finance, paired with a
genuine desire to be helpful and supportive. Colleagues value her as a true team player, and clients benefit from the reassurance that comes with knowing the details are being
handled thoughtfully and thoroughly. While much of her work happens behind the scenes, the impact is felt at every stage of the real estate journey. Diana’s goal is simple: to create a seamless experience where systems work quietly, communication stays clear, and everyone involved can move forward with confidence.

Beyond her professional role, Diana values time spent with her children and granddaughter, moments at the cottage, and finding small reasons to laugh along the way, a philosophy that brings warmth and balance to everything she does.

Client Experiences

Read what past buyers, sellers, and downsizers have to say about working with the Lisa Hartsink Team.