Joseph DiGangi and Robert Quinn of the Boston Brokerage Group represented both the buyer and seller for the sale of 183 St. Botolph St., a 4 unit residential building in the city's Back Bay. The seller was James DeVellis and the buyer is 8 Sunset LLC. The buyer purchased the asset for $1.85 million as part of a 1031 exchange. In order to do so, he hired DiGangi and Quinn to broker the sale of 6-8 Sunset Street, a 4 unit residential building in the city's Mission Hill. The buyer of 6-8 Sunset St. is Big River Properties LLC. Noah Dweck of Big River Properties represented the buyers. The purchase price was $1.275 million.