Zach Zeldner is the #1 Realtor in the City of Boulder and Boulder County by sales volume (IRES MLS via BrokerMetrics, 2025) and the founder of The Zach Zeldner Team at Compass, the #1 medium team in Boulder and Colorado by sales volume (RealTrends Verified, 2025 sales data). As a leading Boulder real estate agent, Zach specializes in luxury real estate in Boulder, CO, while advising buyers and sellers across all price points.
With over $1 billion in career sales and more than $750 million in sales since 2019, Zach is known for his strategic approach, market expertise, and client-first philosophy. His understanding of Boulder's neighborhoods, housing inventory, and market dynamics allows him to guide clients through one of the most competitive real estate markets in Colorado.
Through The Zach Zeldner Team, clients benefit from a full-service experience supported by in-house marketing, operations, and transaction management professionals. Prior to launching Compass in Boulder, Zach was a top-producing Realtor at Re/Max Alliance, where his team closed over $450 million in sales between 2012 and 2018 and earned recognition as one of the top real estate teams in the Mountain States region. He has received multiple industry honors, including Hall of Fame and Lifetime Achievement awards.
Originally from Connecticut, Zach attended The Loomis Chaffee School and the University of New Hampshire. A former competitive soccer player, he is often found running Boulder's trails. Outside of real estate, Zach enjoys spending time with his wife, Jessica, and their two sons, exploring Boulder and traveling together.
Client Testimonials
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★★★★★
“This is the third home I’ve sold with the Zach Zeldner team in Boulder, and they’ve also helped me purchase a home. Every transaction has been handled with the highest level of professionalism, market expertise, and attention to detail. Zach is incredibly knowledgeable about the Boulder market, strategic in his advice, and always calm and thoughtful throughout the process. He and his team make what can be a stressful experience feel remarkably smooth, providing outstanding communication and support from start to finish.”
— Takoua
★★★★★
“Absolutely top notch, flawless professionals with unsurpassed market knowledge and skill. They really have no peer in Boulder and beyond. This was our second major transaction with Zach’s team and it was truly outstanding. They helped us find an off market property and carefully attended to every detail. The result was a dream come true transaction. The same level of dedication and excellence is evident with all members of this team. We are raving fans.”
— Corrine
★★★★★
“I have never seen anyone put so much pride and effort into selling a home. We have used Zach and his team twice now and it quite literally has been the best experience. Look no further than Zach. Him and his team go above and beyond every step of the way. From getting it show ready, to marketing in unique ways across many channels, to helping with the inspection process once under contract, to great communication all the way to signing the contract- all while we were already moved abroad! Thank you, Zach and Team!”
— Melinda
★★★★★
“We have worked with Zach 3 times over the years and he is our first choice b/c we know him to be professional, steady and most importantly, exceptionally knowledgeable of the market. His team is a well-oiled machine of real estate pros that keeps things moving along seamlessly.”
— Robin
★★★★★
“We couldn't be more grateful for our experience working with Zach and his team to sell our home. From start to finish, we felt completely supported and confident in their expertise. The marketing was outstanding – the professional photos and materials beautifully showcased our home. They were present at every showing, providing valuable feedback afterward that kept us informed throughout the process. When it came to navigating offers and closing, their attention to detail was impeccable. Every "t" was crossed and every "i" dotted, ensuring a smooth transaction from contract to keys. Their proactive communication meant we never had to wonder about next steps or timelines. This is truly a dream team of kind, gracious, dedicated professionals who consistently go above and beyond. We cannot recommend them highly enough.”
— Krista
★★★★★
“We have been working with Zach and his team for almost a decade. The professionalism and market insight they bring to the table are simply unparalleled. White glove service throughout the entire process. Thank you, ZZ team!”
— Andy
★★★★★
“The Zach Zeldner Team were a pleasure to work with. They truly operate as a team. From beginning to end the communication and attention to every detail was above and beyond my expectations. I wouldn’t use anyone else. William was always very responsive and patient with us as were the rest of the team.”
— John
★★★★★
“I'd like to compliment Zach and his exceptional team for an under-promise over-deliver transaction. They exceeded our expectations at every turn. I highly recommend them!”
— Lara
★★★★★
“Zach and his team are amazing! The level of professionalism and service is unparalleled. Every aspect of our home sale was handled flawlessly.”
— Suzanne
★★★★★
“Outstanding team of professionals. Top-notch marketing, sales and service, as well as attention to detail. Absolutely first rate!”
— Jeff
★★★★★
“What a great team! Always accessible and responsive and helpful and patient.”
— Sarah
★★★★★
“Smooth execution, thoughtful partnership all along the way.”
— Eric
