Here is the scenario.....I am separated and own my own property in my own name ( as does separated wife ). I am in a new relationship and we are looking to move in together. My new partner also has her own property. We would like to pool our assets but are unsure of the stamp duty implications. If we add each other to each other's property deeds is there a stamp duty liability in that we are technically acquiring a share in a new property ( while simulataneously losing a share )