The sidewalks in front of this aging co-op needed replacement: they were cracked and unsightly. But the job came as no surprise to the board and its management firm, Cooper Square Realty: the board has been monitoring the condition of the property closely as it adheres to a 10 -year capital plan. “Our first priority is the shareholders,” he says. “We want to protect their investment. It’s a very well-maintained building in a great location.”