In 2015, when Diana and Charles Cox were considering where to retire, they drove their R.V. across the Southwest to visit several possibilities: Santa Fe, Sedona, Phoenix, Las Vegas.
They’d lived in San Jose, Calif., for nearly 20 years, but Ms. Cox was winding down her practice as a biotech patent attorney, and her income was dropping as taxes, housing and other living costs were rising.
Her husband, 71, a contractor, had retired years earlier. “I was having more and more trouble paying the mortgage,” said Ms. Cox, who is 69.