The D.C. Real Estate Guide

No surprise: D.C.’s most expensive condominium unit that traded last year sold for $5.75 million at 3303 Water St. NW, the luxurious building perched over the Potomac River. Developed by EastBanc Inc., the 70-unit building overlooks the Rosslyn cityscape and features a 24-hour concierge service and heated pool. It also boasted the highest price per square foot of any sale: a staggering $1,531 per square foot. Two other units in the building sold last year for a now seemingly measly $2 million and $2.2 million. In D.C. there were 88 condo sales that topped $1 million in value last year, a 40 percent increase from 2009, according to Coldwell Banker Residential Brokerage.  Three condos were scooped up in the Ritz-Carlton in Georgetown, the highest of which traded for $4.5 million, or $1,043 per square foot. The Georgetown waterfront’s Residences at Harbourside, a 3-year-old complex atop the House of Sweeden at 2900 K St. NW, sold three of its seven units last year at still eye-popping price tags, from nearly $3 million to $4.5 million.  Across the city in Woodley Park’s co-op building at 2700 Calvert St. NW, located next to the Omni Shoreham Hotel, five units flew off the market at prices ranging from $500,000 to $1.4 million.