Homebuilder stocks plunged Monday following reports that the US is preparing to sharply increase tariffs on Canadian lumber, independent of President Donald Trump’s new “reciprocal” tariffs. …After reports of the new lumber duties emerged over the weekend, however, shares of homebuilders plunged swiftly Monday. …”Tariffs are the clear culprit for the stock market pullback and fears of recession,” says Realtor.com® Senior Economist Joel Berner. “Recession risk is especially poignant for builders.” …The latest round of tariffs, however, will likely increase materials costs for all homebuilders, to some extent, with a recent survey of builders finding that they expect an average cost increase of $9,200 per home as a result of tariffs. …Over the weekend, Moody’s Analytics Chief Economist Mark Zandi raised his outlook for the odds of a recession this year to 60%, up from just 15% a few months ago.