At Summit Commercial Brokers, collaboration isn’t just a value—it’s how we work every day.
We’re a close-knit team of commercial real estate professionals who believe clients deserve the full strength of a collective, not just a single broker.

A True Team Approach

Every listing, lease, or sale at Summit is backed by the combined expertise of five senior brokers—Jim Ditzel, JD Belanger, Rachel Austefjord, Jim York, and Kyle Conarro—who work together and share commissions on every deal. That structure means your goals are shared by the entire team, and every decision benefits from multiple perspectives, strategies, and connections.

Experience That Runs Deep

Together, we bring nearly a century of combined experience in commercial real estate—spanning office, industrial, retail, multifamily, and commercial land across Boulder, Weld, and Broomfield counties. Our diverse backgrounds in investment analysis, development, and marketing give clients a well-rounded, data-driven, and creative approach to every transaction.

Local Roots, Community Focus

Our office is now proudly located in Downtown Longmont, the heart of the growing Boulder County business community. While Longmont is home base, our roots run deep in Niwot, where Summit was founded and where our relationships continue to thrive. Jim Ditzel remains President of the Niwot Business Association (NBA), helping support and strengthen the local business community that helped shape who we are today.
We remain actively involved across the region—from Niwot and Longmont to Boulder, Broomfield, and western Weld County—bringing the same local insight and long-term commitment to every market we serve.

Supported by a Strong Network

Our core team is strengthened by Broker Associates Jacqui Sigg and Kim Ricca, who bring energy, fresh perspective, and deep market knowledge to every project. We’re also guided by the ongoing insight of Tim Conarro, Summit’s retired founder, whose legacy continues to shape our collaborative culture and commitment to integrity.

Not sure where to start? Simply call (303)954-9161 or email info@summitcommercial.net and you'll reach the entire team! 

One of us will get back to you based on your specific Commercial Real Estate Needs.