Renting it out - you will be liable for income tax on the profits from the rent. When you eventually sell it you could be liable for capital gains tax.
Selling it - if it rises a lot in value between the time you are given it and the time you sell it you could be liable for capital gains tax
Your parents - may be liable for capital gains tax when they give it to you. Should they die within 7 years there may be inheritance tax to pay.
Where I say 'may' or 'could' it will depend on the figures whether there is any actual tax to pay