There are much better things to invest your money in. It's relatively easy to rent your property in Pattaya if it's in a reputable area but compared to what you'll initially pay the yields are low so it doesn't make much sense unless you're buying lots of property. Even then I wouldn't advise it, renting in Pattaya is a very competitive market and there are thousands of empty houses and condos. It's a buyer's market. You may well have a hard job trying to sell your property too if it comes to it. Especially at the price you'll want. I wouldn't advise investing in property in Pattaya. Three years ago I bought a condo in a project the construction company hadn't even started building. The plan was to come back to Pattaya two years later to pay the balance owed and live in it for a while. Just before the project was completed the construction company told us they couldn't sell us the condo anymore. Sneaky as fuck what they did but there was nothing we could do about it. A long story but fortunately we got our money back. We were lucky. Turned out to be a blessing in disguise as living in Pattaya for six months almost cost me my marriage. I won't be investing in Pattaya again but we are unperturbed and are planning to start buying condos in Bangkok soon which we believe is less risky. Whatever you do, good luck.
Edit - I've just realised the OP was from more than FOUR FUCKING years ago!