The number of building permits issued for residential units jumped 4% nationwide from January to February, the U.S. Census Bureau said.

The Philadelphia Fed Bank elaborated on this report by sharing specific figures for states in the reserve bank’s region.

According to the latest data, Delaware alone saw building permits rise 8% during the same period.

But in New Jersey and Pennsylvania, permits dropped 47% and 7%, respectively.

Meanwhile, permits issued for multifamily residences dropped from January to February in New Jersey and Pennsylvania, while rising in Delaware and across a large portion of the country.

Year-to-date building permit totals in February represent the highest level reached since 2007 for the state of Delaware. New Jersey permits also recorded a five-year high, while Pennsylvania hasn’t seen permit filings at this pace since 2011.

According to a report by the Philadelphia Fed, Pennsylvania’s economy experienced less of a boom-bust cycle in housing than other states. This is a key factor as to why permit issuance in Pennsylvania was a bit higher in 2010 and 2011 than it is now.