Bangkok is the condo center of Thailand, and there are several hot spots where you will find premium developments. The BTS and MRT attract developers and that means you will find a condo development near every single station on the line.
Away from the central zone of Bangkok, you will find more reasonably priced condos, especially away from public transport. Areas around motorway junctions are now becoming popular in the outskirts of Bangkok when it comes to buying a property.
https://www.expatden.com/thailand/buying-a-condo-in-thailand/#:~:text=All%20money%20for%20the%20purchase,governed%20by%20the%20condominium%20act.