(RECAP: America’s housing market is heating up again, fortifying the finances of current homeowners and frustrating potential first-time buyers. After hitting bottom in 2012, home prices took off dramatically before leveling off a bit in mid-2014. In the last two months, though, they turned higher again. The amount of equity homeowners now have — the value outside their mortgage debt — has doubled in the last five years, according to CoreLogic. The latest read on September home prices showed a 6.3 percent annual gain, a touch bigger than August and a clear sign that prices are heating up again after cooling through much of spring and summer.)