Collin County, home to fast-growing suburbs like Frisco, Plano, and Prosper north of Dallas, is seeing elevated inventory and declining home values in 2026. According to data cited by analyst Nick Gerli, CEO of Reventure App, inventory has spiked 62% above the long-term average to over 4,300 listings. Zillow data as of March 31, 2026, shows the average home value in Collin County at $485,017, down 6.1% year-over-year, with homes going pending in…