NEW YORK CITY — Ariel Property Advisors has brokered the $4.5 million sale of a four-story mixed-use building in Brooklyn Heights. Located at 77 Atlantic Ave., the 7,895-square-foot property comprises two commercial units and six apartments. Victor Sozio, Sean Kelly and Matthew Lev of Ariel Property Advisors represented the seller, Silvershore Properties, in the transaction. The buyer was 77 ATL AVE LLC. The property is located near Brooklyn Bridge Park as well as retailers Urban Outfitters and Trader Joe’s.