Mayor Eric Adams said he’d consider property tax breaks for middle-class co-op and condo owners who have to pay for pricey building upgrades when a new “green” mandate icks in. Hizzoner said he was open to tax abatements as anxious residents brace for the costs of Local Law 97, which covers 800,000 co-op and condo apartments. “My second apartment was a co-op,” Adams said during testimoney in Albany on the state budget last week.