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Client Testimonials
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"We interviewed four of the top realtors in Boulder and decided to hire Zach. We were not disappointed. Zach was very upfront and honest, gave great advice and had tremendous instincts for selling. Extremely professional, first class! Would highly recommend." - User44807917
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"Zach is a cool hand, very professional and an excellent listener. Happy to have him represent our home when the time came to sell. He has access to great local information and his experience proved a valuable asset in getting our deal done." - Erik H.
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"Zach has been a wonderful ally for us in our real estate process. He has watched the market, found hidden gems, guided us through transactions, and throughout it all kept a level head. I recommend Zach to anyone looking for real estate expertise in Boulder." - Kaleyww
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"We decided to work with Zach to purchase a home in Boulder after meeting with several other realtors in the area. Zach is extremely knowledgable about the Boulder market, and imparted a good deal of information that helped us narrow down the neighborhoods we should consider. We worked with him over several months, ultimately winning a bid on a competitive property in a desirable neighborhood. We were impressed with Zach's professional manner, his knowledge about the market and value of individual homes, and his confidence in making offers in a very competitive market. We look forward to working with Zach in the future!" - Andrew H.
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"Working with Zach was effortless. I hired him based the reputation he's built in Boulder over many years and it's obvious why people speak so highly of him. He is everything you want in an agent (dedicated, knowledgable, calm + controlled, discreet) and nothing you don't (dishonest, dramatic, unethical). He's really a cut above the rest, and I'll happily work with him again as well as refer him out to my network." - Liz337
Awards
2020 - #1 top producing Compass Realtor
in all of Boulder & Denver, out of 450+ realtors
2019 - #1 top producing Compass Realtor
in all of Boulder & Denver, out of 450+ realtors
2019 - #1 Compass Small Team in Boulder
2017-Titan Club
2016-Diamond Club Team
2015-Diamond Club
Specialties
Languages: English, Spanish
Education
The Loomis Chaffee School
Zach Zeldner is a founding agent of Compass and one of Boulder Countyās most accomplished and respected real estate professionals. With nearly two decades of experience and over $1 billion in career sales, Zach has built a reputation for delivering exceptional results through deep market knowledge, disciplined strategy, and a client-first approach grounded in integrity and discretion.
Since 2019, Zach has led more than $600 million in residential sales, consistently ranking among the top-producing Compass agents locally and nationally. He has been recognized multiple times as the #1 producing Compass agent in Boulder and Denver and continues to rank among the Top 100 Compass Realtors nationwide. His work spans Boulder Countyās most competitive segments, including luxury, ultra-luxury, and complex residential transactions.
As the founder and lead of The Zach Zeldner Team, Zach oversees one of Boulder Countyās highest-performing small teams, with more than $1.5 billion in total sales since 2019 and decades of combined experience. The team is known for its collaborative structure, data-driven decision-making, and ability to navigate nuanced deals with clarity and precision. Together, they represent a significant share of Boulder Countyās high-end market activity, offering clients a level of insight that comes from daily, hands-on market participation.
Zachās expertise extends beyond pricing and negotiation. His comprehensive understanding of Boulderās neighborhoods, housing stock, development trends, and lifestyle considerations allows him to guide clients with confidence at every stage of the process. He is particularly valued for his calm, strategic approach and his ability to simplify complex decisions without losing sight of long-term goals.
Prior to launching Compass Boulder, Zach was a top producer at Re/Max Alliance, where his team closed over $450 million in sales between 2012 and 2018 and earned repeated recognition as one of the top teams in the Mountain States region. Individually, Zach received multiple industry honors, including Hall of Fame and Lifetime Achievement designations.
Originally from Connecticut, Zach attended The Loomis Chaffee School and the University of New Hampshire. A former competitive soccer player, he remains deeply connected to Boulderās outdoor lifestyle and can often be found running local trails. Outside of real estate, Zach enjoys spending time with his wife, Jessica, and their two sons, exploring Boulder and traveling together.





















































































































































































































































































































































































































































































































































































































































































































































