Jim Moran
The nine-term congressman’s house is nothing special—a three-bedroom, 1950s contemporary with an assessed value of only $400,000. But it sits on a couple of very valuable acres off Chain Bridge Road with good views of the Potomac River. Moran’s third wife, businesswoman LuAnn Bennett, owns the property.
North Arlington
Cost (2004): $5.25 million
Assessed value: $6.61 million
Worth: $6.6 million

Doug Gansler
Weeks after winning his first statewide election, the new Maryland attorney general sold his Chevy Chase home for $1.2 million and bought this five-bedroom Colonial near Burning Tree Country Club and Holton-Arms School. It sits on a half acre and has a swimming pool and marble foyer.
Bethesda
Cost (2006): $1.26 million
Assessed value: $1.32 million
Worth: $1.3 million

Adrian Fenty
During his campaign for DC mayor, Fenty didn’t hesitate to show off his much-renovated, 50-year-old split-level—with sunken living room and twin-island kitchen. It’s worth six times what he paid for it ten years ago.
Crestwood, DC
Cost (1997): $215,000
Assessed value: $1.13 million
Worth: $1.2 million
       

Jim Webb
After ousting George Allen from the Senate, Webb bought this four-bedroom townhouse near Chain Bridge with a wet bar, whirlpool tub, and master-bedroom suite. He got a deal—it sold for $250,000 below list price.
North Arlington
Cost (2006): $1.15 million
Assessed value: $1.36 million
Worth: $1.4 million

More houses after the jump. 

Anthony Brown

The former Prince George’s County state representative parlayed his impressive résumé—Harvard Law classmate of Barack Obama’s, majority whip in the Maryland General Assembly, and Iraq-war veteran—to a win as lieutenant governor. Brown and his wife and two kids live in this five-bedroom Colonial on a half acre.
Mitchellville
Cost (1999): $287,000
Assessed value: $381,000
Worth: $595,000

Frank Wolf
Considered the most vulnerable local congressman going into the midterm elections, the 14-term Republican held off Judith Feder, dean of the Georgetown Public Policy Institute, his toughest and best-financed opponent since his first election. For more than 30 years, he’s lived near the Dulles Toll Road on this five-acre lot with a swimming pool.
Vienna
Cost: (1974): $30,000
Assessed value: $1.1 million
Worth: $1.6 million

Ike Leggett
Montgomery County’s new top executive has room to stretch in his 4,500-square-foot home on five acres.
Burtonsville
Cost (1993): $730,000
Assessed value: $961,000
Worth: $950,000

Corey Stewart
Backed by antigrowth forces, Stewart, a Republican, won election as chair of the Prince William Board of Supervisors. He and his wife and two kids live in this custom Colonial on more than a half acre near a small lake.
Woodbridge
Cost (2001): $346,000
Assessed value: $589,000
Worth: $750,000

Eleanor Holmes Norton
The Democratic takeover of Congress means Norton has a shot at getting the right to vote in the House. She lives in this 100-year-old, five-bedroom rowhouse a few blocks from Eastern Market.
Capitol Hill
Cost: not available
Assessed value: $1.07 million
Worth: $1.2 million