Kris,
Best to get some good advice from a decent Bangkok lawyer firm.
The following is what I've been advised, but don't quote me on it please.
i then propose to lease the house (for free) on a 30 year lease from my wife...that will make me 69 when the lease is up.
Best to 'buy' the house and lease the land only. You can sell the house later if neccessary and less tax obligations.
case scenario 1
my wife dies during the term of the intial 30 years....the house goes to my kids right?...is the lease then void?....and my kids could then potentially chuck me out and sell
Have the lease in your name only then your initial 30 year lease obligations fall on the new land owner (wife's heirs or future land purchaser if she sold). You are totally safe for at lease 30 years.
You can also specify in the lease that you can sell the house and remaining years of the initial lease to anyone should you fall out with missus.
Case scenario 2
i die before the term is up....lease is void? (of course)
No, not void, you can specify in the lease who you wish the lease to be left to if you die. Ie: if you die 10 years into it, you can specify that your wife/sister/mum/best mate etc can take over the lease for the remaining 20 years.
case scenario 3
neither of us die so i can then extend the lease with my wife..(if we haven`t fallen out by then)
Yes, but 30 years is a looooooooong time
I fall out with my wife about every 30 minutes on average.
You can tear the lease up and make another one for another 30 years any time you like. Worth doing in say 5 or 10 yearly intervals while things are still sweet with missus. Need to pay tax at land office again, but worth doing.
Also put a clause in the lease saying you have right to buy land should law change on foreigners holding land. Do not under any circumstances hold your breath on this one.
Good luck,
Burger