Jay Soneff is done paying ransom.

“About five years ago, I received a call from the company that was handling our marketing and listing platform,” he said. “They told me they were raising my cost to over $600 a month. I was going to have to sign a three-year agreement that had some nasty penalties if you didn’t perform.

“And I really felt like it was extortion.”

The solution, Soneff decided, was to launch his own competitor to CoStar, LoopNet and Crexi, companies that offer real estate research, marketing and listing services.

Commercial Co-Op was born. In 2022, Soneff started testing it in Grand Junction. He expanded to Denver a year and a half ago.

Soneff — who runs Jamis Cos., a local commercial real estate brokerage, investment and management firm — said he’s spent $2 million buil

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