SS, I suspect the CGT calculations are more complex still. I haven't sold a foreign property, but I'm expecting exchange rate fluctuations to come into play with relation to CGT. Think its fair to assume that the Government in the country you have bought will not care about exchange rate fluctuations which affect your return. They will look at price you sell your property for (in their currency) and deduct purchase price and all allowable expenses you provide documentation for (again in their currency) to determine amount that CGT can be applied to.

So, lets say you pay £300k Euros now for a property at todays exchange rate of 1.3 Euros to the £1. (Costs you £231k to buy property.)

To keep the sums simple lets say there were no other costs associated with buying your property and that you won't incurr any when you come to sell.

When you come to sell the exchange rate has returned to 1.5 Euros to the £1. CGT is 10% in country you have property.

You sell property for 350k Euros, leaving 50k Euros being taxable abroad. After CGT you transfer the remaining 345k Euros for £230k (1.5 Euros to the £1.) That's £1k less back than you paid yet you still had to pay CGT in the other country.