BROOKLYN

One Grand Army Plaza, a glass-clad Brooklyn condo, has undergone a $1.1 million upgrade to its ventilation system, including the replacement of a cooling tower, air intake unit, and exhaust fans, resulting in $40,000 in annual energy savings.

Attorney general says failure of condo sponsors to pay dues is a "serious" problem.

Lawsuits against condo developers for building defects are growing more complex.

There are steps boards can take to soften the sting of today's hard insurance market.

Disgruntled unit-owners can write a group letter demanding an election, then threaten legal action.

Historic deal preserves affordability under a 99-year regulatory agreement.

Duped condo buyers avoid foreclosure, create a limited-equity co-op.

The offering plan and contract of sale will determine who's responsible for the repairs.

In a first, a Mitchell-Lama co-op has converted to an HDFC with a 50% flip tax.

In a first, rent-stabilized apartments are converting to affordable co-ops — forever.