Capital gains tax _ can anyone help

I have a house with i got through inheritance i have paid inheritance tax on the value of the property at the time over the last few years i renovated same and put about a hundred k into it does anyone know how capital gains tax would be calculated on it if i sold it

my understanding is that they would look at the value of the house the time it was valued when i had to pay the inheritance tax and add on what i have put into the house and then pay the capital gains on what i would make but i could be very wrong can anyone please help me with this

Was the house your PPR?

No it hasnt been as i am renting as the property is too far from where i work