Valley’s biggest real estate company joins Forbes Global Properties Daily staff report Slifer Smith & Frampton Real Estate has joined a partnership with several other realty firms that will operate under the Forbes Global Realty umbrella. This has been an eventful couple of years for the valley’s biggest real estate company. Slifer Smith & Frampton Real Estate announced this week it has joined Forbes Global Properties. The partnership is the biggest of the firm’s recent big deals, including moving into the Roaring Fork Valley and Denver markets. The new brand uses the Forbes name to link a number of real estate firms in the U.S. and Europe.