For a discussion. of the related concepts of entrepreneurial incentive, developerâs profit, contractorâs profit, profit, and project profit, see Appraisal Institute, The Appraisal of Real Estate, 13th ed.
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. For an average 2,200-square-foot home, expect to pay about $3,542.
1 For an average 2,200-square-foot home, expect to pay about $3,542. 2  For a 3,500-square-foot home, expect to pay about $5,635. 3  Fire sprinklers cost 1%-2% of the cost of a new home. 4  In already existing properties, sprinkler systems typically cost $2,000-$16,000. For a 3,500-square-foot home, expect to pay about $5,635. 2  Fire sprinklers cost 1%-2% of the cost of a new home. 3  In already existing properties, sprinkler systems typically cost $2,000-$16,000.