EST. 1988
Our Story
TTR Sotheby’s International Realty is regarded as one of the highest-performing real estate firms in the United States. With ten offices and over 500 real estate associates, our commitment to professional service, flawless integrity, and community leadership allowed us to capture more than $5 Billion in closed sales in 2021 while also serving as one of the Washington Metropolitan Area’s foremost leaders in corporate philanthropy.
SOTHEBY’S
A Legendary Heritage
Since 1744, Sotheby’s has been uniting collectors with world-class works of art, and over those 275 years has grown into an innovative global art business. Sotheby’s has long been a leader in the auction market, but today offers so much more, including private sales, selling exhibitions, retail wine and diamonds, financing and art advisory services, and robust digital engagement that collectors can find any time, anywhere and on any device.
LEADERSHIP
The Executive Team
At the heart of TTR Sotheby’s International Realty lies an Executive Team devoted to delivering a world-class brokerage experience to agents, brokers, and clients alike. Founded on the principles of leadership, service, and integrity, the Executive Team at TTR Sotheby’s International Realty helps drive the strategic roadmap for our firm and for the Washington Metropolitan Area’s real estate community at large.

CEO AND MANAGING PARTNER
Mark C. Lowham
Learn more about Chief Executive Officer, Mark C. Lowham
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MARKETING
A Global Platform
Through proprietary marketing technology, cutting-edge digital strategies, and unrivaled access to the world’s most discerning buyers, TTR Sotheby’s International Realty engages daily with a global network of trusted real estate advisors. Beyond the beautiful properties and the personal touch of our real estate agents, only TTR Sotheby’s International Realty delivers a signature level of service designed to elevate your property as one of its own.