Hi Leighton,
may I rephrase your question to "How much CGT is he liable to pay?", because there is no doubt there is CGT liability on the premise that the property value at sale is bigger than the property value on acquisition (1992).
All details on the relationship of your client with the property prior to their becoming formally owners of it, does not bear any weight in estimating CGT. From the details presented, the time to initiate CGT estimation is 1992, when they become owners.
CGT = ( (Value at Sale) - (Value on acquisition) - (Annual allowance) - (Private lettings allowance)) * ((2008 - 1992 - (Years of PPR) - 3)/16) *18% ,
where,
Value at sale: the money received from the buyer
Value on acquisition: the property's value on the date your client overtook ownership in 1992, it will have to be obtained by specialist valuers unless it can be provedn any other way, such as valuation committed close to the date of acquisition
Annual Allowance: the annual CGT allowance currently I think at £9,200
Private Letting Allowance: this can be up to £40,000
2008: current year of sale
1992: year of acquisition
Years of PPR: the number of years your client had the property as his formal Primary Private Residence between 1992 and 2008, if at all then this parameter is 0
3: years allowed further if the property was PPR.
18: the number of years of ownership (2008-1992)
18%: the new CGT rate, valid since 6th April 2008, which substituted Taper relief and indexation.
I am sure the above will set your thoughts going whilst James will soon kick in to verify and complement my comments.
All the best
Aris