Brief outline, British guy owns a condominium, buddhist wedding to Thai lady and have a child. Has a child in the UK also. Brit dies with no will. Wife and kids have agreed to split the condo sale 3 equal ways.Cant sell until the name has been changed . Can any advise what paperwork is needed and approximate costs.

Thanks in advance 

MOVED to Real Estate

 Probate is required 

Assuming that the widow  is  both  the beneficiary and the administrator then post probate his estate is under her control.

She is then free to transfer the title deed of the apartment to her  name. However this is not a good idea.

Apartments in  a Thai name are difficult to sell -suggest that she  does not do this transfer.

Wait until she gets a foreign buyer. Then the widow as the administrator can do the transfer.

 

She will have  the authority to transfer.

 

Slight problem . You state Buddhist wedding.

If there was no legally recognized  marriage then she will get zero.

 

If the child is legally his then this child will inherit. The widow will not.

In such circumstances the apartment will just sit there for years -nobody paying the fees-assuming no other  legal claimants to his estate. can be found. His offspring in his home can in theory make a claim -the cost will be enormous . 2 courts to go thru.

Cost of probate -best guess -50,000 baht.

If the foreigner has assets and a will in his home country-then a death certificate with an official transfer is required-not difficult -very cheap.

Sharing the Thai assets (given that there are some) with his prior offspring is entirely a decision for the Thai beneficiary.

No  Thai  court  can rule in the favour of foreign base offspring.