Carnegie Hill Wales watch

The Hotel Wales, a cozy Carnegie Hill institution for nearly 100 years, might be facing check-out time.

The 89-room inn at 1295 Madison Ave. at East 92nd Street has sold for $35 million to DLJ Manhattan Real Estate, an affiliate of DLJ Real Estate Capital Partners, according to a filing on the city’s Department of Finance Web site.

A Cushman & Wakefield sale-offering flyer last March said that the 10story, neo-Renaissance property can be converted to residential use as-ofright. It touted it as a “rare opportunity for conversion to a luxury mix eduse condo building” and noted that if converted into full-floor apartments, “every unit would have a Central Park view.”

The Cushman pitch said the Wales’ unused 6,611 square feet of air rights could be used to add a penthouse floor.

Although small by most standards, the Wales enjoys an outsize role in the life of the discreet, tony Carnegie Hill neighborhood. Its retail storefronts are home to two popular restaurants, Sarabeth East and Paola’s.

Originally known as the Hotel Chastiagneray — “a popular stomping ground for flappers, tycoons and returning WWII heroes,” according to the Wales’ Web site — it later fell into disrepair as a single-room occupancy hotel until new owners converted it to a fine boutique inn back in the 1980s.

Two SRO units remain in the building, according to the Cushman flyer.

No one at DLJ’s Broadway offices returned a call on Tuesday. Cushman brokers didn’t immediately respond to e-mails.