Construction permit values in Houston totaled $8.9 billion for the 12 months ending in March 2015, a 40.3% increase from the previous year. Residential permit values rose 32.4% while nonresidential permits grew 45.2%. In March 2015 specifically, total permitting activity decreased slightly by 0.5% due to a 29.3% drop in residential permits, though this was offset by a 13.6% rise in commercial permits.