My ex & I (never married) bought our house 6 years ago for 640k. It is now worth maybe 830. We got a residential mortgage in both our names. We had no deposit but instead of selling my old house I got a BTL mortgage to raise the funds and rented it. We both paid the mortgages off through the joint account.
We did some big work on our home to increase its value. Majority of effort was mine (built & paid for the kitchen myself, partner helped a bit with painting, but I did most). Cost approx 40k. I also received some money from my family which was used for the renovation work (15k).
We split up a while ago and he moved out and stopped paying the mortgages for over a year. I have contributed much more into our joint account-before our first split I had paid in 16k more than him. The joint account was used to pay both mortgages and some bills but not all. We also bought a camper van and some holidays, which went on credit cards (again the majority of these were in my name because he “wasn’t comfortable getting more credit”.)
He has calculated an amount that I need to give him to buy him out but based everything on an even split. 50/50. It is beyond belief that he thinks he deserves half of the equity of the house when he didn’t contribute towards the mortgages for over a year.
This is such a mess and and don’t know where to start. I just want him out but he is refusing to go until I pay him. Where can I go for advice on how to reply to his “calculation”? What information do I need to provide so can we get to a legal agreement. I’m also wondering how much any professional support would cost.