Hi,
If the property was named in a will, with you and your siblings as the beneficiaries, then each of you will need to work out if you have a capital gain. There is a calculator at
Sell your property: Work out your gain, which leads on to registering for a capital gains account, to report and pay the tax due withing 60 days of the completion date. Guidance on allowable expenditure can be found at:
CG15150 - Expenditure
Thank you