how much do home fire sprinkler systems cost
1 According to the Fire Protection Research Organization's 2009 Fire Sprinkler Cost Assessment, sprinkler installation costs homebuilders $0.38-$3.66 per sprinklered square foot, with an average cost of $1.61 per sprinklered square foot. 2  For an average 2,200-square-foot home, expect to pay about $3,542.