200 EAST END AVENUE

A trio of New York City statutes instituted last year are designed to make it easier for co-op and condo boards and other building owners and managers to address the extreme-weather effects of climate change, as well as better prepare for emergencies generally. We've written about Local Law 110/2013, which requires, among other things, drinking-water stations that draw separate from the main water line; and Local Law 111/2013, which addresses the complicated rules that govern backup-power generators.

The third leg of this triangle is Local Law 109/2013, which helps make it easier for buildings to install flood barriers.

It was no surprise that 200 East End Avenue was vulnerable to superstorm Sandy: The garage had been flooded once before during a Nor'easter. But no one anticipated how much devastation the storm would wreak on this 17-story tower.

In the early hours of October 29, building superintendent Scott Falk thought the co-op would weather the storm with little damage. The property sits on the edge of Franklin Delano Roosevelt Drive and the East River just past it, so Falk and his staff evacuated the garage and secured the sloping driveway and service entrance with sandbags. The rain wasn't as heavy as forecast and by late afternoon, the streets were relatively dry.

As he drove into the city from Long Island, Robert Mellman phoned environmental companies, hoping to get one onsite quickly to pump out the contaminated water. By the Orsid Realty property manager arrived, the building's electrician was there, working with Con Ed to cut power from the grid.

It is not easy preparing for 40 feet of floodwater. And in the early hours of October 29, the 17-story co-op at 200 East End Avenue in Manhattan suffered just such a surge at the hands of Superstorm Sandy. Since then, the building's staff, co-op board and managing agent know what they would do differently next time in terms of preparation — and what they would do the same. "You can't over-prepare and you can't over-communicate," says Neil Davidowitz, president of the building's management company, Orsid Realty. Here's what this co-op's board and professionals recommend ... from harsh firsthand experience.