Looking For 2 ~ 3br Room House/Condo Unfurnished in the following Areas Thonglor, Sukhumvit, Ratchada, Ekamai & Asoke budget is only set for 15,000 Baht but am willing to take on long contract up to 3 years...

Have you considered speaking with an agent (Property Plus, CBRE, for example) or, perhaps, checking the internet?

I can get you in contact with a landlord where I stayed before. For long term contract you can get it at that price I think. Nice 2 bedroom apartment fully furnished in Thonglor soi 25.

Let me know if you need information.