I got mine at the local tessabahn when our house was finished. !0 years ago and my memory not good but if I remember correctly I needed my passport plus a translation of the relevant page, the chanote of the land and pictures of the completed house with the address which came from the land office ( I think ).
Since these requirements might have changed over time, and each district might have different requirements , it would be best to go with your wife when she gets her new blue book ( tabien bahn ) then at the same time , ask exactly what is needed for you to get a yellow house book. Some places are more friendly and co operative than others. Mine was ok but where we previously lived in Bangkok they were unhelpful and corrupt and basically tried putting a lot of unnecessary obstacles in my way.
It will help if you keep your cool no matter what and be friendly and polite as possible. Better to dress with long trousers in my opinion. Some might baulk at this obsequious behaviour but for me it was being normal.
If you get the yellow house book getting a pink ID card is easy. Is it worth having this ? Well, I find it useful at the bank when they want ID as it fits in my wallet and saves carrying a passport around although a Thai driving licence is also accepted.