An open house for sale.Justin Sullivan/Getty ImagesAmerica's housing market likely won't get more affordable anytime soon, Morgan Stanley said. Mortgage rates are poised to stay high even after the Fed eases monetary policy. The bank thinks housing costs will slow their pace of growth, but won't see a decline.Homebuyers and renters shouldn't count on getting much relief from high housing costs, according to Morgan Stanley.Costs have been steadily rising for both buyers and renters in the past year.