Thanks for the repiles. Much appreciated.

It was always my main residence.  Could my parents claim this as their residence also given their existing property was purchased pre 1985 and would not be subject to CGT if they decided to sell. Thinking outside square here…

My parents have paid no costs towards this property. I have paid for everything including mortgage. I have also not paid any rent to my parents.

Will my parents be able to increase their cost base if we say there was an agreement to contribute? We did not document anything but could we do retrospectively?

We really made a mistake with the structure to begin with. It should have been 100% in my name as it was always intended to be my place.

I am about to turn it into an investment property hence why I want to get it into my name 100%. My parents are about to retire and do not want to hold this property in their name any longer.