NEW YORK CITY

Vigilance is the key to detecting disastrous structural flaws.

New rules prompted by fatal explosions put plumbers in a bind.

New city rules and rising insurance premiums are sending costs up.

Low incentives are making the math unattractive to most buildings.

Low-cost loans for energy retrofits will help co-op boards cut carbon emissions.

Data on energy and water usage is now translated into building letter grades.

Many co-op and condo boards are burying their heads in the sand.

Co-op and condo boards have limited power to set rules on window units.

Instead of acting as a pass-through, condos should bill sponsors directly.

Register here to comment at hearings in Manhattan, Queens and the Bronx.