Capital Gains on property originally bought as only home

Hi, I bought my home in 1998 and lived there until 2017. I moved out, renting out the property, and eventually bought another property to live in in 2021. Does capital gains apply to the value of the house whilst it was rented out. If so, do I need to get the value of the house in 2017?

Hi DJG112,
The gain is worked out on the difference you paid for it against the price you sold it for.
You can claim residential relief for the period you actually lived in it.
Please  see guidance here:
Private Residence Relief (Self Assessment helpsheet HS283)
Thank you. 

Very helpful - many thanks