CGT and Allowable Expenses - property sale

I bought my property in 2013 and lived there until 2017 before moving abroad for six years until early 2023. Now I am back living in the property as my main residence so have effectively lived in it for 4 out of the ten years I have owned it to date. Can I set capital costs of improvements for the whole period against CGT when I sell or only for the period when it was rented out ? Also what about costs of purchase and sale - are these allowable in full, apportioned or not allowable at all given I was resident in the property for 3.5 years after buying it and will be again at the point of sale.

Hi megs93,

You can set any of the capital costs for the period of ownership against any potential gain.
The buying/selling costs are not time apportioned so full relief will be due (assuming you have sole ownership).

Thank you.