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1015 Maryland Ave. NE

Listed sale price: $689,500

Previous sale price: $370,000 (Dec. 2004)

Square footage: 1,320

The owner of this three-level Capitol Hill row house salvaged only a grand pocket door and some original molding and trim before doing what he calls a “complete renovation” in just four months. This quick overhaul included a new roof, furnace, and water heater and a plethora of stainless-steel kitchen appliances from the Frigidaire Professional Series. The fully finished English basement is where the Martha Stewart Living details really shine, from the meters covered in cabinetry—“so they won’t stick out like a sore thumb,” says one prospective homebuyer—to the space under the stairwell converted into storage. So do these killer upgrades account for the near doubling of price? “It’s not my policy [to disclose numbers],” says the owner. —Constantine Caloudas