yes so thats why personally i think its a good visa for initial retirement, gives you time sort out bank account and get an idea if you want to truly stay. Seen so many people give up after a year and decide thailands not for them for whatever reason
Try these two groups Building in Thailand group Residential Construction for Expats Thailand you will gdt better answers. But basically i would say no unless you have someine you really trust. You need to be there. Rent somewhere near
There is a great book building in thailand that will explain all the pitfalls here.
We have had our land 5 years now and still in planning stage. Research is key