Market value determination for CGT on property sold to family member

Hi If i wanted to sell an inherited property, which is not my primary home/property, to a family member I understand i would pay CGT on the difference between the value of the property when inherited and the market value of the property now, regardless of whether i sell at this market value or below. What evidence does HMRC require of this market value? How does HMRC check/determine market value? Thanks

Hi EK86,
You would need to have 3 different valuations  done by estate agents and take an average.
Thank you. 
 

Are the valuations provided by Zoopla and Rightmove considered acceptable, as our local estate agents just use them anyway

Hi davidprevill Revill,
Yes as long as you can provide supporting evidence.
Thank you.