Leasehold property is not generally regard as 'rental', although it is for a fixed term. That fixed term may cover several generations - a typical lease on a flat lasts 50-100 years. I don't think in the UK any flat is ever sold freehold; but if you own a flat with a remaining lease of, say, 45 years, you call it 'my flat' and you don't pay rent.
I'm not an expert on this, but I don't think we have the leasehold option in Spain. Or if we do, it is really uncommon.
In this connection, you maybe interested that the term 'real estate' - and, in Am English, its derivative 'realtor' (which in Br English is an 'estate agent') - is derived from the Spanish real, because all the land belonged to the king.