Can my wife change her address in her house registration book if we are registered at a different location?

Get a rent lease from your wife where your TM30 is registered. Her changing address will have no effect on either of you. I know people that registered at friends house so their children go to a better school. BTW your wife registering at house for sale makes perfect sense regarding tax.

Can you own 2 houses and have 2 house books with the same owners name ?

You mean her agent

Your wife can only be named on one blue book as the primary resident.. which is why the agent made this suggestion.. which makes a lot of sense if you don't sell it until she's held the blue book for that property for 1 year.. better to research what your tax liability is likely to be before you waste your energy though.. it may be such a negligible sum that you just decide to pay it.. and if your selling price only just takes you into a profit.. it's also worth considering lowering the sale price slightly and then charging the buyer for incidentals you are including.. such as the aircon or other movable features.. so as to differentiate between the bricks and mortar and the rest of it.. such as furnishings or other portable fixtures.. eg. a car port could be taken down and moved to another property in theory.. so could be sold to the buyer under a separate contract that falls outside the actual property sale.. just to give you an example.. the land office is only interested in the agreed price for the purchase of the land / main house.. so with a buyers co-operation you can potentially reduce any tax liability.. if your property lends itself to such.. once sold your wife can put her name back onto the property where you will be living again.. but none of this affects your tm30 because she remains the owner of it and should already have an account on the immigration website to register your tm30's.. so won't need to upload another copy of her blue book.. if that was your concern my friend 😉

As stated, your wife’s house book registration is irrelevant to your tm30 or 90 day reporting.

I rented a condo with an empty blue book and had no issues.

It *might* affect a marriage visa renewal, but I doubt it.

FYI a property must be use as a primary residence to be qualified for PRIMARY residence aka ภาษีธุรกิจเฉพาะ taxes when sold. There is also time restrictions, 5 years ownership or 1 year as a primary residence.

There is a “promotion” the transfer cost for as low as only 0.01%!!! This law was implemented a couple of years ago in hope of booting home selling but as everyone can see….😅

I am registered at my Thai in laws house book 3 hours away and has no impact on where I reside for Immigration . If that helps.

Welcome broham, I recognize the Ebonics.

What your wife does regarding her primary address has no effect on you, as long as you have a TM.30 registered for the location you are applying for your extension you won't have an issue. However just to be sure, your wife can call and ask immigration themselves or talk to a lawyer.

Do your extension in a few days then your wife can change her registration if she wishes

TM30 has nothing to do with where someone is registered. It has to do with where you are physically staying.