Hello - I need help

My father bought an apartment just outside Fuengirola in Spain in 1986 through his business at the time 'Wharfedale conversions Ltd', he was a director of the firm. He has not traded under this name for many years now (I have tried to find details of the company at Company House, but can't find anything) and does not live at the address stated on the apartment deeds.( I have a copy of the deeds but they are all in Spanish)

He wants to give this apartment to Myself and my sister as a gift, and we have been talking about doing this for the last five years and he has never found out what he has to do to do this.

I wondered if anyone would know what he would have to do and how much it would cost???

I am in need of some advice as he is going out to the apartment in Spain and wants to arrange to see a solicitor over there to try and start the ball rolling. no doubt it will be very complicated!!!!!,

Emma Nash