Bought a house in Spain 1983. in joint names with my wife. We divorced in 1990 with a clean break settlement, with the Spanish house becoming 100% mine. All this is in the divorce papers with my ex wife fully agreeing.

A few years ago A spanish abagado informed me that there was no need to change anything as since Spain joined the EEC, English divorce papers were accepted in Spain.
Now I have put the property on the market the agent informs me that it has to be changed at the registery. What is the simplist way to do this and what costs would there be.. Also as it was purchased pre 1986 no capital gains would be due or the 3% deposit.. Would I lose that concession?