I don't think there's a fair was to do this TBH because whatever you decide isn't going to be fair to everyone concerned.
So when your mum passes away, you will own 75% of the property and your husband 25%. When the time comes, have you considered selling up and downsizing into a property where you would both be paying 50% of the purchase price and 50% of the costs incurred when buying and selling?
If this were doable, you would both be in a position to leave your own children 50%.
Last letters make new words - Series 3
So it begins….. Streeting resigns
