Miami-based Related Group of Miami LLC paid $29 million for a waterfront site north of downtown Miami, up from the $11 million early last year.

A joint venture between Wellington-based Eastview Realty Advisors LLC and New York-based GTIS Partners Lt. just paid $28.1 million for another waterfront site in the same Edgewater neighborhood. That is nearly twice the $14.5 million the seller paid for the debt on the site and 21 unsold condos in an abutting building in 2011.