A development site that could house more than 130 luxury apartments has changed hands in Jersey City’s West Side neighborhood, in a deal arranged by B6 Real Estate Advisors.

Brokers say the 31,000-square-foot property, 70 Mallory Ave., traded for $6.5 million in a transaction involving two undisclosed parties. Plans for the site call for a mixed-use project with 136 units, the firm said, touting its location near the Hudson-Bergen Light Rail’s West Side Avenue station and other transit nodes.

An investment group has acquired a 25-unit apartment building in Jersey City’s West Bergen neighborhood, in one of several recent deals by B6 Real Estate Advisors. The brokerage firm said the buyer, Titanium Capital Partners, paid $4.5 million for the 5,700 square-foot property at 2005 Kennedy Blvd.