TRUMP TOWER AT CITY CENTER

Sure, your doorman probably isn't gossiping about the people you're dating. And sure, that fellow co-op board member who wants you out isn't looking through security-camera footage to prove you're not cleaning up after your dog. And, surely, you as a parent aren't going to ask your board or management to let you see electronic key-fob data and confirm what time your teenager came home.

Except … what's to stop you?

When the 37-story Trump Tower at City Center condominium in White Plains was built in 2006, developer Louis Cappelli estimated that the building's annual energy bill would be $700,000. Instead, the first year's costs were double that. Condo board members were shocked: This brand-new luxury tower was an energy hog. In January 2007, the board hired Larry Gomez of Trump Management to manage their property. The first order of business: Cut the energy bill down to size. But with board members wary and residents reluctant to make changes, was the battle doomed from the start?