Nearly 10 million seniors are having difficulty paying for housing – and the problem is growing. Housing experts typically recommend that people keep their housing costs below a third of their income. But one in three Americans over age 65 are spending more than that on their rent or mortgage payment, utilities, property insurance, maintenance, and other housing costs, according to a new study, “Housing America’s Older Adults,” by Harvard’s Joint Center for Housing Studies. If the senior housing problem hasn’t reached crisis proportions yet, Jennifer Molinsky, who wrote the center’s report, predicted that it will if nothing is done to increase the supply of housing structures that are both affordable and age-friendly to meet the needs of aging baby boomers…