Priciest, cheapest units to hit the market

The priciest listing to hit the market this week is an Upper East Side townhouse that sold last year for $31 million, making it the biggest townhouse sale of 2011. The limestone mansion, at 19 East 70th Street, was previously owned by the Knoedler Gallery; it is now owned by an LLC named East Renaissance. The 17,000-square-foot property, which has eight bedrooms, is listed with Adam Modlin and Marisa Sargent of the Modlin Group. It is asking $38 million.

The second most expensive home to come online is two-unit combination co-op apartment with six-bedrooms, six-bathrooms and a private keyed elevator at the Brentmore at 88 Central Park West. The total asking price is $19.5 million for two apartments; John Burger, senior vice president at Brown Harris Stevens, has the listing. The sellers appear to be Jeffrey Gates, a hedge fund owner, and Richard Moran, according to city records.

The third most expensive unit to hit the market is an eight-room home at the Dakota at 1 West 72nd Street. The co-op apartment, listed for $14.5 million with Guida De Carvalhosa and John Burger of Brown Harris Stevens, features original 19th century architectural details, three wood-burning fireplaces and Mahogany woodwork.

The cheapest apartment to come on the market this week is a two-bedroom, two-bathroom co-op apartment at 36 Convent Avenue in West Harlem. The unit, listed with Aida Browne of Weichert Mazzeo, is asking $71,550 and is subject to board approval. The second least expensive home is in the same building, on a lower floor. The price and listing agent are the same.

The third least expensive is a one-bedroom, one-bathroom co-op unit at 108 West 114th Street in Harlem. The 500-square-foot pad is asking $90,000. Its sale is subject to income restrictions on the buyer. The listing agents are Elaine Perry and Lavera Smith of Perry Associates. – Katherine Clarke