Leave a Message

Thank you for your message. We will be in touch with you shortly.



​​​​​​​Compass Founding Agent, Realtor®

(720) 480-7650 | [email protected]


Award-winning Boulder Realtor Zach Zeldner consistently delivers extraordinary service and unmatched market knowledge in one of the country's most sought-after residential enclaves. Backed by 19 years of experience, he is a consummate professional who always puts his clients first with unfailing integrity and discretion. Zach has been the #1 top producing Compass Realtor in all of Boulder & Denver from 2019-2023, out of 500+ realtors.  Zach was also recognized as the #1 top producing individual realtor in all of Boulder in 2019, 2020, 2021, and 2022.  Zach was recently recognized as one of the Top 50 Compass Realtors in the country. Compass currently has 30,000+ realtors across the country. With over $750,000,000 in residential sales since January 1, 2019, and career sales over $1,000,000,000 Zach consistently leads the Boulder market.  

Zach's unique understanding of Boulder's real estate market, neighborhoods, housing stock, school systems and amenities ensures that clients receive knowledgeable, full-spectrum guidance when buying or selling. He's a reliable and loyal advocate who takes great care in creating customized strategies to exceed the goals of his clients. Zach is a fierce negotiator, and his unparalleled work ethic and efficient, attentive service mean that not a single minute of his clients' time is wasted. As a Compass Founding Agent, Zach is aided in his quest for total client satisfaction by the renowned in-house marketing services, nationwide reach and industry-leading technology of the country's largest independent brokerage. Zach’s team includes fellow Realtor® Amanda Salzman, Transaction Coordinator Jenny Lampert, Licensed Assistant Hillary Harris, and Director of Operations, Lauren O'Neil. 

Prior to launching Compass Boulder, Zach earned multiple top-producer accolades at Re/Max Alliance on Walnut, where his team was responsible for over $450 million in sales between 2012 and 2018. The group was repeatedly named the top team in the state and among the top five teams in the company's entire Mountain States region. Individually, Zach received multiple honors, including Hall of Fame and Lifetime Achievement designations.

Originally from Connecticut, Zach attended The Loomis Chaffee School and The University of New Hampshire. As an accomplished athlete, he excelled as a soccer player into his early 20’s. Today, taking full advantage of Boulder's tremendous outdoor lifestyle and breathtaking scenery, he can frequently be found running on the region's many trails and roads. When not working or running, Zach, his wife Jessica and their two sons enjoy exploring Boulder and jetting off on exotic surf trips.

Career Highlights


Realtor Compass Boulder
​​​​​​​2019, 2020, 2021, 2022​​​​​​​


Total Career


Sales Since
​​​​​​​January 1, 2019

Top 50

Compass Realtor
Nationally in 2021​​​​​​​

​​​​​​​Amanda Salzman | Realtor®

(303) 956-4433 | [email protected]


To get the property you want, you need a seasoned professional with an intimate knowledge of the Boulder market, as well as a deep network of personal and professional connections that provide access to off-market listings. As inventory grows tighter in Boulder, Amanda proactively finds homes for her buyers before they come to market. Amanda typically finds deals through creative and collaborative efforts within her community - not on the MLS.

Amanda has been a top producing Realtor® in Boulder County for nearly a decade, winning numerous awards and recognition from her previous company, RE/MAX Alliance.

Amanda's expertise extends beyond the Boulder City limits. She is active in the surrounding mountain communities as well as Louisville, Lafayette, Longmont, Niwot, and Gunbarrel. Amanda understands the financial freedom that owning real estate can offer. She currently lives on a small farmette and owns multiple investment properties in Boulder.

Originally from the Midwest, Amanda's love for the outdoors and the Rocky Mountains drew her to Boulder. Her personal life is an exciting and fun mix of enjoying all the adventure and arts offered in Boulder and the surrounding areas. Some of her most memorable adventures include multiple rafting trips down the Colorado River through the Grand Canyon, running 50 miles through the Colorado Mountains between Vail and Aspen, and modeling for Patagonia Clothing Company.

Amanda graduated Summa Cum Laude from Southern Illinois University with a BS in Economics and a BS in Business Communication.

William Greig | Realtor®

(914) 263-7678 | [email protected]


With an ideal combination of empathy, skill, and experience William has quickly become one of Boulder's well known real estate agents in the luxury sector. As it always does, the past informs the way William approaches work today. A former Division 1 Track and Field runner turned professional triathlete and small business owner, William is no stranger to hard work and dedication. Always striving to learn and grow, William also earned two Masters degrees from the University of Michigan, the second in Social Work with a focus on Interpersonal Practice and Mental Health.

What separates William from other agents is the combination of his people-centered approach and entrepreneurial nature. With an intense focus on achieving the best possible results for clients William maintains a people centered approach that recognizes the emotional component of any real estate transaction. This helps him to find individualized solutions that put the needs of clients first, always finding flexibility to accommodate the people at the center of this work.

William was originally drawn to real estate by his experience buying and remodeling his personal homes. A genuine people person, he leverages his knowledge and calming demeanor to deliver seamless, low-stress experiences for his clients. He has established a notable reputation for connecting deeply with buyers and sellers and helping them fine-tune their exact objectives. He addresses every situation with a level-headed approach. William truly thrives on helping everyone find their place to feel at home.

A New York native, William now resides in gorgeous Lake of the Pines with his wife Becca, their two daughters and their sweet pup, Bella. There, they enjoy taking walks around the lake, hiking, biking, paddle boarding, and swimming.

Hillary Harris | Realtor®

(650) 796-3673 | [email protected]


Hillary is a licensed Realtor® and an integral member of the team. Hillary has lived in Boulder for over 10 years and has a great appreciation for Boulder and the surrounding areas. As an experienced buyer and seller of real estate, Hillary understands the dynamics of buying and selling property, the complex nature of each transaction, and the importance of each step throughout the buying and selling process.

Before her career in real estate, Hillary owned a successful catering and events company for 15 years in the San Francisco Bay Area. Hillary understands the challenges of running a small business, the balance of assisting multiple clients, and the importance of meeting dates and deadlines in a timely manner. Hillary takes great pride in ensuring that all aspects of a transaction are handled smoothly. When she's not working with clients, you can find Hillary racing up Mount Sanitas, doing Crossfit, or dreaming up new adventures for her and her two kids.