Four months ago, the already-hot Boulder commercial real estate market saw what could be one of its most consequential deals yet, when BioMed Realty LLC purchased a 1-million-square-foot portfolio in the Flatiron Park business campus — located east of 55th Street between Arapahoe Avenue and Pearl Parkway — for $625 million. That was the richest commercial real estate sale in Colorado history, $232 million more than the previous record. But the sale carries significance far greater than the sticker shock of the price, said Becky Callan Gamble, president of commercial brokerage Dean Callan & Co. BioMed is one of the largest life-sciences real estate firms in the country — it…