NEW YORK CITY

Average taxes for NYC co-ops are up by 2.38% and for condos by 2.23%, with the window now open to challenge a unit's assessed value with the Tax Commission.

High interest rates and lack of listings will slow sales and boost values.

Some New York co-ops and condos have seen 300% spikes in premiums.

The newly passed tax abatement program allows eligible co-op and condo boards to offset renovation costs by filing applications within four months of completion or effective date.

Lawmakers are largely silent on prospects of bill seeking greater transparency.

Buyers and sellers are beginning to accept that rates will not be coming down anytime soon.

J-51 and property tax relief could help pay for clean-energy retrofits.

Co-ops with flexible rules tend to attract young buyers and maintain apartment values.

.

Lower price tags make co-ops attractive, provided they have the right amenities.

Co-ops and condos have an opportunity to showcase high-efficiency cold-climate heat pumps thanks to a $10 million NYSERDA initiative.