Federal Times obtained a General Services Administration report which said the government spent $30.7 billion to maintain 3.3 billion square feet of property in 2010.
Maintenance costs went up from $29.9 billion in 2009, excluding some Defense Department facilities.
GSA said maintenance costs include cleaning, groundskeeping, repairs and trash disposal.
On average, the government spent $5.30 per square-foot to maintain property it owned and $15 to maintain leased space; an increase from $12.80 in 2009.
Federal Times also reported the cost of maintaining excess and underutilized property decreased from $1.8 billion to $1.6 billion per year in 2010.