Looking for opinions on a fair split of house-selling proceeds.
Partner and I have reached the end of a hard relationship. We bought the house jointly about 7 years ago, just under £250k. Partner put down £90k deposit from his previous house, I was a first time buyer. He chose not to ring-fence his deposit.
The mortgage was calculated on my salary only because his wages were/are irregular. I paid moving costs, fixed his old boiler and simple redecoration on the old house to get it ready for sale, and bought new appliances for the new house. Over the years, I've also replaced the windows, had a new boiler, gas line and heating put in, and bought a new oven and washing machine.
On average, I pay £1000 into the joint account each month, though that sometimes goes up to £1500. He is meant to pay £400, but sometimes misses a month. In 2017, he didn't pay anything for the year when he was struggling with mental illness.
We don't have children. Not married. The house is estimated to be worth around £390k now.
How can we work out the best/ fairest way to split the money when we sell the house?