I spent most of my life in the construction industry doing some really high end jobs, 5 star hotels, shopping centers mainly on the finishing work, I would say Thailand has a long way to go to being anywhere near compliant with any rules and regulations,
I've seen some of these so called ramps you would need a hoist to get up them, In my own house we step down into the bathrooms and where I live we have no pavements you would be in the road with a wheel chair,
The list of alterations you would have to do would be endless, I don't see it happening,
I have some apartments they made some attempt by having a ramp at the main entrance which is not to steep but that's where it stops maybe you would just get a wheel chair the door in the apartment but that would be it,
Then you have to consider fire regulations for disabled people we have fire doors that open in, they should always open out, Think about all the swimming pools have you ever seen one disabled friendly?