This week’s open-house picks include a spacious townhome in Rockville, a light-filled condo in DC, and—in the luxury bracket—a sprawling 12,000 square foot home in Clarksville. A Modern Townhome in RockvillePrice: $825,000Where: 5100 Oakmoore Dr, RockvilleBedrooms/bathrooms: 4/3.5House size: 2,232 sq ftListing agent: Mandy Kaur, RedfinOpen house: Saturday, January 31, 2 PM — 4 PMThis end-unit luxury townhome touts four levels and a private rooftop deck. The primary bedroom suite fits a California-king bed and features a custom walk-in closet, and en suite bathroom with dual sinks. Other highlights include a two-car garage, high ceilings, and a modern design across the home’s four bedrooms. The kitchen comes with a 72-square-foot island and green-tiled backsplash with a pot filler and bronze appliances, plus a four-car garage.