UIP Relocates Offices to 3400 Block of Connecticut Avenue, N.W. Washington, D.C, February 2, 2009. Urban Investment Partners will soon begin a $1.9 million renovation of The Macklin, a 70-year-old apartment building located at 2911 Newark Street, N.W. on the corner of Connecticut Avenue in the upscale Cleveland Park neighborhood of Washington, D.C. The company also is completing renovations on about 3,000 square feet of retail space located on the building’s ground level, and is relocating its offices there from Northern Virginia.