Jiraa

UbonJoe: My sister got Thai citizenship through marriage, I assume/think. (Still together, with grandchildren now) 

Ima_Farang: My sister and I have the same parents.

I think we're on the same page. My game plan is to enter Thailand using single-entry type O and switch to "extension based on retirement" if the citizenship path turns out to be a dead end. I will definitely pursue citizenship once in Thailand. I'm also paving a backup way to stay.

My dad's birth may be difficult to prove. I believe we have no record of it and the family only lived in Chiang Mai for a brief period after my father's birth (1930's). Therefore, there's no one who can vouch for us.

I'm planning to apply for the single-entry type O visa to enter Thailand.

My first question is can I apply based on visiting my sister? (not parent or child.)  

I'm also stuck on how to prove my relationship to her. Is it sufficient to submit pictures of her Thai passport and Thai ID? Must I have her birth certificate as well?

How have others done it?

I'm a US citizen living in Los Angeles.
My sister is a Thai citizen. She resides in Thailand on a consistent and permanent basis.  

I found the following sentence from the Thai Consulate, but it is not clear to me. 

To visit as an immediate family member of a Thai nationality
       - Documents proving such relationship with the visa application e.g., Birth Certificate and Thai Passport/ Thai I.D. of the parents who are Thai.

Wow!  I will look that up.  

My dad passed on 10 years ago, but he was born in Chiang Mai.  He didn't live in Thailand either for the last 30 years of his life. 

Thank you, all.

I was a child. I don't think I had citizenship.

Sounds like all is lost.  I have to resort to visas like a true farang.

Hi, I've been reading Thaivisa posts all day looking for information on how to turn my blue tambien baan into resident status in Thailand. The information is pretty confusing.

My name is on a blue tambien baan in Khon Kaen.  But I've been living in the US for the last 30 years.  I have US citizenship.  I've been to Thailand many times during the 30 years but I never bothered to do anything about the tambien baan.  Now that I'm retired, I want to go back to Thailand to live permanently. How do I revive this tambien baan into residency status - meaning the ability to enter or leave Thailand as I please, as many times as I need to, and get a driver's license, etc.
 

Would appreciate any help!  Thanks!