House could take over as the Nationals' starting third baseman before the end of the season, Mark Zuckerman of MASN Sports reports.
The Nationals promoted House from Double-A Harrisburg to Triple-A Rochester on Sunday.
House has five homers in his last 11 games at Double-A Harrisburg and is slashing .268/.364/.500 in 30 games this season.
House was promoted to Double-A Harrisburg on Tuesday, Jesse Dougherty of The Washington Post reports.
House went 2-for-5 with a double and a run scored Saturday in his first game for High-A Wilmington.
House is batting .333 (6-for-18) through six games with Single-A Fredericksburg with a double, a triple, two home runs, a stolen base and a 6:4 BB:K.
House will move from shortstop to third base this season, Andrew Golden of The Washington Post reports.