1. Tomasz owns the freehold of a house, and it is not subject to a mortgage. Some years later, he embarks on a relationship with Harriet. It quickly became severe, and she moved in with him in 2010. Throughout their relationship, they had three children. They shared paying the household bills as well as caring for the children, both working part-time so that they could share the caring responsibilities equally. In 2015 Harriet was concerned that the roof needed replacing and thought it might be a good idea to create an attic extension simultaneously. Tomasz agreed as it would give the family more space, and Harriet paid 50,000 for this work. Although they never spoke about it, she felt this would be her contribution to the house and hoped this would secure her interest.

In 2021 they split up, and Harriet now seeks to claim 50% of the house.

Advise Harriet on a possible claim under a common intention constructive trust and the likely size of the share that would be awarded.