U.S. house prices rose 1.7% annually in Q1 2026, the slowest growth since 2012, due to higher mortgage rates and affordability challenges. Price changes varied widely by region, with Puerto Rico up 16.3% and Colorado down 2.4%. Midwest and Northeast metros saw strong gains, while some Florida, Texas, and Mountain West areas experienced declines. Overall, 42 states and Puerto Rico reported gains, with one-third of top 100 metros showing price drops.