Clockwise from top left: 923 Fifth Avenue (credit: PropertyShark), Joseph Klaynberg, Bahar Tavakolian and the interior of Klaynberg's unit Ilan Bracha

Real estate developer Joseph Klaynberg and his wife, Emily, have sold their five-bedroom condominium at 923 Fifth Avenue for $10.9 million, according to city property records filed Feb. 8. The sale, handled by Ilan Bracha, founder of Keller Williams NYC, was the most expensive of last week.

Klaynberg is the founder of Wonder Works Construction, a development and construction firm that has worked on numerous New York City residential projects. A native of Minsk, he is now a senior managing director at Berkshire Capital Group, a private equity real estate investment firm headquartered in Manhattan. [more]

New Jersey real estate investment firm the Klein Group, which focuses on retail properties, paid $20 million for four retail condominiums at the residential building the District, at 111 Fulton Street in the Financial District.

The four individual condos are comprised of 17,200 square feet of ground-floor space and 4,620 square feet on the lower level. Currently, about 45 percent of the total space is vacant, Jacob Klein, the president of Klein Group, said. He said the firm was in advanced discussions with various tenants for the available space.

The sold out District, a 163-unit residential condo developed by Africa Israel, Wonder Works Construction and Urban Equities NY, is at the corner of William Street and is two blocks east of the under-construction Fulton Street Transit Center at Broadway. – Adam Pincus… [more]

A few months after switching marketing firms from now-defunct JC DeNiro & Associates to Brown Harris Stevens, District’s developers have made another change, this time to Urban Marketing, a new division of brokerage Urban Sanctuary. Switching sales and marketing firms has become a common response from developers to slowing sales amid the recession. District, a 163-unit condominium at 111 Fulton Street, is currently over 70 percent sold out, said Stephen McArdle, a partner at Urban Marketing…. [more]