Unlisted, a groundbreaking digital real estate community focused on the 98% of homes that aren’t for sale — yet, today announced that Thomas Kolker, a top DC real estate advisor with TTR Sotheby’s International Realty, has joined the platform as the exclusive Local Expert for buyers and homeowners in ZIP codes 20002 and 20003. He joins fellow TTR Sotheby’s International Realty colleagues Daniel Heider, Melanie Hayes, Jaclyn Mason, and Holly Tennant Billy as part of Unlisted’s expanding presence in the DC Metro region.
Unlisted’s technology is designed to open up possibilities for everyone in the real estate ecosystem: buyers, homeowners, and agents alike. Buyers gain new ways to discover homes they love beyond what’s listed on the MLS. Homeowners gain tools to better understand interest in their property and connect with potential buyers. Real estate professionals gain a platform that elevates their expertise and brings more possibilities into view for their clients.
Unlisted uses publicly available data to create a digital property profile for every home in the country. Users can quickly search and organize these homes into curated lists that meet a buyer’s criteria. Even when a home isn’t for sale, buyers can join a Waitlist for the properties they love — creating new touchpoints for connection and giving homeowners insights and opportunities they may not have previously considered.
Each vetted real estate professional partnering with Unlisted receives an agent profile linked to every home in their ZIP code. Only one agent is selected per ZIP, highlighting their credibility, market knowledge, and leadership. As Unlisted expands nationwide, the mission remains the same: to provide buyers, homeowners, and agents with a platform built on connection, expertise, and meaningful insights.
A fourth-generation Washingtonian with unmatched geographic knowledge, Kolker is one of DC’s leading real estate advisors, earning the Top Individual Agent Award for TTR Sotheby’s International Realty’s Washington DC Downtown office in 2022, 2023, and 2024. Over the past three years, he has represented clients in more than $120 million in sales — with an average sales price ranking among the top 5% of all agents in Washington, DC.
Known for his no-pressure approach, unrivaled work ethic, and full-service commitment to every client relationship, Kolker has become a trusted advisor whose partnerships extend far beyond a single transaction. His reputation for clarity, responsiveness, and strategic guidance has generated a deep base of repeat clients and referrals. Today, he brings that same perspective to homeowners and buyers across Capitol Hill and the greater DC Metro area.
“My clients look to me for clarity and real guidance, and Unlisted gives me another way to bring that level of support to both buyers and homeowners in DC,” said Kolker.
“What stands out about Thomas is the level of trust he has earned in the DC community,” said Katie Hill, founder and CEO of Unlisted. “He is deeply connected to the community he serves and we're proud to welcome him to our growing network of Local Experts.”
To learn more about Unlisted, visit UnlistedHomes.com. For Unlisted for Agents, visit UnlistedHomes.com/Agents.
To learn more about Thomas Kolker, visit his Unlisted Profile or his website.
About Unlisted
Unlisted unlocks the potential in homes that aren’t for sale — yet. The company empowers home buyers to join the Waitlist for homes they love that aren’t for sale — in other words, unlisted. At the same time, homeowners collect a Waitlist of interested buyers for whenever the time comes to sell, giving everyone a head start. Unlisted also allows homeowners to control how their home is presented online; they can create a stunning up-to-date property profile that shows off the home’s best features and attracts more interest. With more time and more connection, Unlisted is a more human way to explore real estate that drives better outcomes for all. Selected for TechCrunch’s 2025 Startup Battlefield 200 as one of the top tech startups globally, and backed by HearstLab, Hearst Newspapers, VC414, StageNext Fund, and prominent angel investors, Unlisted gives buyers a competitive edge in today’s challenging housing market. For more information, visit UnlistedHomes.com.
Media Contact
Sophia Jacomet
sophia@unlistedinc.com
