My DP and I are selling both our houses and buying together. It's second time round for both of us, we both have children, so we don't want to get our fingers burned and we want to protect our share. I am putting in £200k, he is putting in £77k but also wants to use £75k of the mortgage to put towards his business, he will indemnify me against this amount. If it all goes pear shaped and the market doesn't crash I want my deposit back and half the equity. He wants to pay more of the mortgage (he is the higher earner) each month so he eventually 'catch up' with my share. At what stage do we get the deed of trust and cohabitation drawn up? When we go o the market? When we've offered? How does it all work?