reportedly planning to quadruple the size of his $12 million California beachfront mansion, but at least one supporter is touting the jobs created by the massive upgrade.

"I want to tell you this," a supporter told Romney during the opening of his Tampa headquarters Friday. "You created more jobs with your house than Barack Obama has in the last three and a half years."

"That is true," Romney replied.

The Romney campaign has argued that the mansion's living space is only being doubled.

"The 'quadrupling' was a measurement of added non-living space, including a basement and garage," according to the New Hampshire Union Leader's Joe McQuaid, who spoke to Romney about the expansion.

Romney and his wife Ann also own homes in Lake Winnipesaukee, New Hampshire and Boston, Massachusetts. They recently sold two other homes in Belmont, Massachusetts and near Park City, Utah for about $8.75 million.