Hi
We are not able to say if the work carried out is allowable or not,as we cannot give financial advice. We can only point you to the guidance, so that you are able to make up your own mind. Please have a look at CG15150 (
Expenditure: introduction) onwards. Private residence relief will apply for the period that the property was your main residence. The helpsheet HS283 (
HS283 Private Residence Relief (2024)) will explain how this is calculated. There is a calculator at
Capital Gains Tax to help you work out if there is a gain and contains links to allow you to report and pay the tax due online.