BROOKLYN, N.Y.–(BUSINESS WIRE)–Mortar Group, the New York-based architect-led real estate investment firm, is advancing plans for a new four-unit condominium development at 470 Humboldt Street in Williamsburg, Brooklyn. The firm acquired the property earlier this year. Completion of the approximately 5,000-square-foot residential project is targeted for late 2027.The property sits in a mature residential neighborhood with access to the L and G subway lines, local retail and restaurants. It ref