Have you checked the solvency of the HOA? That could account for the huge price reductions. I remember hearing about a condo complex in El Cajon (no name or street location was provided) HOAs also paid for water. Many owners were underwater, upside down, defaults, foreclosures. They stopped paying the HOAs. The other FB had to pay HUGE HOAs to cover those who weren’t paying. They had no choice or the water was going to be turned off.