A new condo from Gary Tamarkin near the high line. 456 West 19th Street will rise in Manhattan's West Chelseas area. It will include 22 duplexes ranging in size from 1,100 square feet to 2,800 square feet, with asking prices of $1,500 a square foot to $2,800 a square foot. The building is now under construction. The condo will also have an address of 140 Tenth Avenue.