Back in the slapdash days of easy credit, lenders were more likely to overlook the fact that a parent was out on maternity or paternity leave. But now that lenders have become more conservative, they are requiring new parents to jump through more hoops to prove their income will be enough to cover the mortgage.

So before some prospective parents start spending their Sundays at open houses, they should be prepared to deal with some complications. They may have to delay the purchase, deal with the banks’ bureaucracy (and requests for extra paperwork) or buy a home they can afford on one salary.

“Maternity leave or any other leave of absence often prevents a person from obtaining a mortgage,” said John Councilman, president of AMC Mortgage in Fallston, Md. “There are some who long for the days when such strict proof of income was not required.”