therealdeal.com – Jeffrey Kaye’s Stone Street Properties is in contract to acquire a nine-building multifamily portfolio spread across the Upper East Side and Clinton Hill for $86 million from the Birdoff family, The Real Deal has learned.

The portfolio consists of six buildings on the Upper East Side and three in Brooklyn’s Clinton Hill neighborhood that hold a combined 210 rental apartments, most of which are market-rate units. Family-run real estate investment firm Charles Birdoff & Co. owns all the properties, according to city records.