UPPER WEST SIDE

First son fights effort to remove family name from Trump Place.

A design committee’s roadmap for tackling a hallway makeover.

“Gang of Six” comes together to lead tricky hallway renovation.

Policing resident conversations usually falls to building management.

Growing international army has a new recruit in Connecticut.

The decline of co-ops is visible inside an icon.

President's lawyer threatens board with legal action over licensing agreement.

Former Church of Christ, Scientist is finally out of legal limbo.

Some shareholders downsizing their gargantuan apartments.

Like your own co-op or condo over a certain size threshold has probably done, the two-building 110 Riverside Drive complex on West 83rd Street in Manhattan performed its required Local Law 87 energy audit last year. At the same time, its co-op board participated in a New York State program that offers monetary rebates to buildings that reduce energy use by a certain percentage.

In a previous article, we talked about how the board used that as a way to entice shareholders to invest in an energy-saving overhaul, or "retro-commissioning," of its HVAC (heating, ventilation and air conditioning) and water systems. But what else did the co-op do — and what else would it like to do — to make itself more energy-efficient?