If one of two partners paid a much larger sum for construction, is the built land divided equally between them?

The brother does not take half of the proceeds when the property is sold. Rather, he takes his share proportionally. This is done by appraising the land at its market value, as if it were vacant, with each party receiving half of that value. Then the property is appraised, and the difference between its value and the land's value represents the value of the building. This value is then divided between them according to each person's proportion, so the brother receives 15.3% and the questioner receives 84.7% of the amount exceeding the land's value.