Haize is a co-founder of T. C. Lewis & Co. and serves as Executive Vice President. She has been integral in guiding the company to No. 128 on Inc. magazine's list of the Fastest Growing Privately Held Businesses in America, No. 7 in Real Estate, and No. 2 in Tennessee. 

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​During her tenure, Haize has founded and developed the Property Management Division for T. C. Lewis & Co., has been key to expanding the efforts of the Real Estate and Construction/Remodeling Divisions, while earning certification as an EcoBroker (the first in the Southeast), graduating the NETAR Leadership Program, graduating the Pal's Institute for Corporate Business Management, having been named one of the Top 40 Under Forty by the Business Journal, and voted the Tri-Cities Favorite Realtor by the Johnson City Press.

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Haize is from the mountain town of Robbinsville, North Carolina, and the daughter of legendary football coach Bob Colvin. She took her innate, natural competitive drive and leadership with her to college - attending Western Carolina University. There she graduated with a Bachelor of Science degree in Communications. With a background in public relations, marketing, and banking, Haize worked in Charlotte, North Carolina's competitive banking industry following graduation. She eventually gave in to the call of the mountains and moved to Northeast Tennessee where she opened a successful bar and restaurant (HALO) in downtown Johnson City. She sold the place after five years and used the capital to become a co-founding partner in T. C. Lewis & Co.

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Over time, T. C. Lewis & Co. has grown and expanded and been recognized for its dedication to customer and community service, and Haize has been integral to that. She often heads up area non-profits and fundraising efforts, including co-founding Young Professionals Tri-Cities (YPTri), as well as serving on various committees throughout the Appalachian region. Haize is a public school advocate and leader of the PTA in her children's school.