Joint ownership- who pays

[citynbeach]

My partner jointly owns a home with his father. The father lives in it and pays the mortgage and everything to do with the house (upkeep, all bills, repairs, maintenance, insurance etc). My partner is obviously benefiting from the property going up in value with new bathrooms, garden redesign etc. as joint owner should he pay something towards the mortgage (with interest rates going up) or if repairs need doing even though he doesn't live there?

People saying that he can't be a joint owner if he's not paying anything towards the mortgage are surely wrong?
If the house is registered in joint names then they both own it. I don't think it makes any difference who is paying the mortgage.

@citynbeach Can I ask why you are asking this ?

Because there are so many possible permutations in this, it might be helpful if people had an idea what the issue is / why it has come up now.

I would argue that if your DP paid half for everything, then his DF should be paying him half the market rent for having beneficial use of the property.

Is there a need of support OP? If your partner wanted his money out, could his Dad manage? If he doesn’t need all the space, he’s paying for ‘renting’ half a house he doesn’t need.
I think there are too many variables for there to be one ‘right’ answer here.