Just a quick thread to see if someone could shine some light on what seems to be a complicated area. My parents have their own house for sale, but also want to sell the house they inherited from my grandmother. They inherited her house around 2002 and since then rented it out to a family member for a nominal amount. However they have spent considerable amounts updating the property to its current high standard.

As things stand I understand that if they sell both properties Capital Gains Tax will be due on the property that is not their main residence. However if they sold their house and moved into the second house is there a timescale they would need to be at the address before it is classed as their main residence or if they sell each house in a different tax year ( april to april) would this suffice?

I know we will need to get expert advice but I just thought I would get a few opinions first

Thanks for your time in advance.