With the help of Rockville-based multiple-listing service MRIS, we compiled a list of some of the most expensive houses for sale in the Washington area. ¶ The properties range from a $3.4 million Watergate apartment that includes two combined homes to a historic Georgetown estate selling for $10.5 million:

3255 N St. NW (Courtesy of HomeVisit)

3255 N St. NW

$10.5 million

Agent: Mark McFadden, Washington Fine Properties

Built in 1809, this five-level Georgetown home includes an elevator, expansive entertaining spaces, four bedrooms, four full baths, two half baths, a swimming pool, geothermal heating and air conditioning, and a two-car garage.

6653 Sorrell St., McLean (Courtesy of TTR Sotheby's International Realty)

6653 Sorrel St., McLean

$5.5 million

Agent: Penny Yerks, TTR Sotheby’s International Realty

Built in 2000, this Langley Forest home has five bedrooms, five full baths and two half baths. The outdoor living space includes a wraparound porch, a rear patio and landscaped grounds. The property also comes with a two-bedroom guest house with a garage, kitchen and recreation room.

9380 Mount Vernon Circle, Alexandria (Courtesy of HomeVisit)

9380 Mount Vernon Circle, Alexandria

$4.2 million

Agent: Jason Mandel, Washington Fine Properties

Built in 1989 on land that was originally part of George Washington’s Mount Vernon estate, this 8,000-square-foot home has walls of windows overlooking the Potomac River, five bedrooms, six full baths, two half baths, seven fireplaces and an elevator. The grounds include a swimming pool and a private dock.

9531 River Rd., Potomac (Courtesy of TruPlace)

9531 River Rd., Potomac

$4 million

Agent: Sharon Owens, Long & Foster

Built in 1989, this home has seven bedrooms, six full baths and two half baths on a two- acre site. The house has a full bar with a wine chiller and distinctive architectural details such as a gently curving floating main staircase, arched doorways, coffered ceilings, moldings, marble baths and marble fireplaces.

879 Spring Hill Rd., McLean (Courtesy of Jessica Evans of Keller Williams Realty)

879 Spring Hill Rd., McLean

$3.9 million

Agent: Scott Shawkey, Williams Realty

This new estate residence, built by Keswick Homes, boasts more than 9,000 square feet and was designed to be reminiscent of manor homes in the French countryside. The home has five bedrooms, seven full baths, one half bath, a marble foyer with a split staircase, an elevator, formal entertaining spaces, a gourmet kitchen with two separate islands and a library. Buyers can add a swimming pool to the grounds.

4115 Parkglen Ct. NW, Washington (Courtesy of HomeVisit)

4115 Parkglen Ct. NW

$3.6 million

Agent: Muffin Lynham, Long & Foster

Built in 1993, this home in the Hillandale community includes six bedrooms, four full baths, one half bath and a walk-out lower level with a family room and a second kitchen. The foyer includes a split staircase leading to a gallery overlook on the second floor and the home includes formal living and dining rooms for entertaining, a family room, a library and a gourmet kitchen on the main level.

2700 Calvert St. NW, PH No. 812, Washington (Courtesy of HomeVisit)

2700 Calvert St. NW, PH No. 812

$3.6 million

Agent: William F. X. Moody, Washington Fine Properties

Two units were combined to create this penthouse home in the Shoreham West, which has an embassy-size formal dining room for entertaining along with an expansive living room and sitting room with a fireplace, three bedrooms, three full baths and one half-bath.

3043 P St. NW, Washington (Courtesy of Sean Shanahan)

3043 P St. NW

$3.5 million

Agent: Alex Vendetti, TTR Sotheby’s International Realty

Unlike many homes in Georgetown, this property was built in 1959 rather than in the late 1800s. Still, the Georgian Revival-style complements neighboring homes. The 5,000-square-foot property comes with gated parking as well as a garden visible through glass walls in the double parlor.

700 New Hampshire Ave. NW Nos. 604 and 605, Washington (Courtesy of Chris Zimmer)

700 New Hampshire Ave. NW, Nos. 604 and 605

$3.4 million

Agents: John Pruski, Cathie Gill and John Gill, Cathie Gill Realtors

Two units were combined to create this home, which has 3,250 square feet of interior living space as well as 1,000 square feet of balcony space. Recently renovated, this home has three bedrooms, three baths, a library, a large formal dining room, an expansive living room and a wine room with a bar with Lalique glass panels. The price includes garage parking for three cars.

Lerner is a freelance writer.