Caitlin Sugrue Walter outlines improvements in market tightness, new measures for affordability advances. Caitlin Sugrue Walter, vice president of research at the National Multifamily Housing Council, presents at NAREE’s 2026 real estate journalism conference. Photo by Suzann D. Silverman While apartment vacancies have been rising overall and rents consequently softening, there have been some signs of improvement, according to Caitlin Sugrue Walter.