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US Residential delivers a reliably great apartment living experience through a simple philosophy: put people first.

Our Management Team


Tenacious. Driven. Strategic. Passionate. Accessible. These are just a few words that people use to describe US Residential President Stephanie Brock. In her role, Stephanie is responsible for the company’s operational, client satisfaction, growth and revenue objectives.

Creative and collaborative, Stephanie leverages her 30 years of multifamily expertise to build dynamic teams – and genuine relationships – to optimize performance and maximize the value of US Residential-managed assets. She leads by example, consistently challenging the status quo to connect strategy with solutions that advance performance and reputation.

Stephanie joined US Residential from Greystar Real Estate Partners – the largest third-party property management company in the country – where she served as Senior Managing Director for the company’s Central Mountain Division, comprising nearly 50,000 units in 18 states. Prior to Greystar’s acquisition of Riverstone Residential Group in 2014, she served as Riverstone’s Division President for the Central Region, which consisted of nearly 55,000 units. At Riverstone, Brock was responsible for opening and establishing seven new markets.

Stephanie’s real estate career was launched at Trammell Crow Residential, where she rose to the management ranks and led a successful effort to rebuild the organization’s market presence in Houston, Denver and Phoenix.

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Ask anyone who has had the pleasure of working with Kelli Tomczak, and they’ll tell you that she is a patient, open-minded, and thorough leader, the kind of person who leverages opportunities and overcomes obstacles to improve and streamline company operations.

And those are good attributes to have in her role as Chief Administrative Officer at US Residential. In this position, Kelli oversees the critical behind-the-scenes functions that keep the company’s core functions running: accounting, treasury, information systems, compliance, risk management, marketing, revenue management, maintenance, and construction.

Kelli joined US Residential in 2017 from Resource Residential, where she served in a comparable role. In her 13 years with Resource, Kelli quickly became an integral part of the company’s leadership team first in accounting, then asset management, and property operations. Her broad exposure in these critical functions provides her with a deep understanding of the business from multiple facets. The result is a line-up of integrated and efficient support services that make life easier for everyone.

Kelli started her career as an auditor at boutique accounting firm Simonson, Lipshutz & Fogel P.C., where she gained valuable experience managing the auditing process from start to finish, once again giving her a full spectrum view into the business.

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Mark Conner's role of SVP of Shared Services expands on his Revenue Management duties to also include IT and Property Marketing, a trio that is often beginning to mesh as the industry evolves. He first joined US Residential in 2013 after serving as AIMCO's Senior Director of Revenue Management. Mark brings nearly 20 years of revenue management experience - nine of them in multifamily - he has played instrumental leadership roles in the creation, development, and implementation of large-scale revenue management systems. Mark is a graduate of The University of St. Thomas in Houston, and has his M.B.A. in Finance.

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Amanda Zinsmeyer loves apartments. It started in college when a friend encouraged her to apply for a part-time leasing position at a Tramell Crow community. She did and got the job – and found she had quite the knack for training and marketing. And the rest, as they say, is history.

Fast forward 20 years or so and you’ll find Amanda leading US Residential’s national Education and Marketing groups, where she plays an up-front-and-center role in building the company’s people-first culture. Strategic, poised, and creative, Amanda has earned a reputation for creating and implementing innovative, large-scale, and integrated marketing and training programs that engage customers and advance reputation and performance.

Amanda joined US Residential in 2016 from Mill Creek Residential, where she was the Vice President of Learning and Development responsible for the start-up’s national training strategy. Prior to Mill Creek, she was with Grace Hill, where she worked with companies to develop custom online training curriculum. Prior to her tenure with Grace Hill, Amanda served as the Director of Marketing and Training for Behringer Harvard Residential where she and her team developed and implemented innovative marketing strategies, as well as in-person, online, and self-guided curriculum for property operations.

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We don't throw around the term "black belt" that often, but when we do, we use it to describe Regional Vice President Lindsey Geitz. Yes, she manages a formidable portfolio totaling nearly 10,000 units in our Northeast and Mid-Atlantic markets. But it's her depth and breadth of experience encompassing virtually every aspect of property operations that gives her our black-belt ranking. This is a person who has been up close and personal with acquisitions, lease-ups, dispositions, renovations, and new construction at mid-rise, high-rise, garden-style, and mixed-use communities.

With nearly 20 years industry experience, Lindsey is sought out for her creative approach to problem-solving and inventive processes that advance asset and client performance and reputation. Ask anyone on her team and they'll tell you than Lindsey is dedicated, prepared and principled, a sharp thinker with smart solutions that create value through better execution. It may be her military background (she's a proud Army vet...Hooah!) or her personal drive to outperform competitors and the market, Lindsey is the kind of person who promises what she'll deliver and delivers what she promises.

Prior to joining US Residential in 2014, Lindsey served as a Senior Director for Greystar Partners, where she was responsible for operations and business development in the company's New York, New Jersey and Connecticut markets. Lindsey received a Bachelor of Arts degree from Brewton Parker College in Mount Vernon, Georgia, has served as Vice President of the greater Hudson Valley Apartment Association.

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