Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information first
Which part of the Uk are you in?
How much is the house worth and when was the Grant made?
Is there any reason why you r brother cannot raise a loan/mortgage to cover this sum?
I think you are right to be concerned - especially if this has happened before.
Having said that if you are not willing to actually say no, then I would suggest that you tell hime that you want him to pay rent (50% of the market rate) until he purchases your share of the property and to have a signed agreement guaranteeing you a set amount by a set time failing which the property will be sold - and interest on the amount for every day after that point
Once that date has passed you will always be able to force a sale - even if he is living there - but I believe you need the financial penalties in place as well
I hope that this is of assistance - please ask if you need further details
The best option would be to simply say no!
Let us hope so!
Is he one of the Executors?
Then if he moves in you can write and remind him that he will have to pay rent - and that he is personally liable to you for any losses you incur - and any costs you incur to force a sale