The reasons why second hand property in Thailand is a hard sell:
1. No buying incentive from government and developers. No free transfer. No free sinking fee. No free maintenance for 2 years, no land tax...etc.
2. The interest rate on second hand properties is always higher.
3. The mortgage loan can be arranged for the higher amount by developer so Thai can buy a Honda Civic.
4. After a few years the average second hand property looks like trash. Water leaks, worn out built in furniture, cracking laminate.....
5. Read the op