Hi all,
I managed to get this explanation about the taxes we have to pay:
The non-residents tax form, Modelo 214, is made up of two parts - Wealth and Income Tax (Patrimonia y Renta).
The wealth tax is correct as you said (0.2%), although the figure of 217 euros is on the property (it would be 108.50 euros for each person).
Thereafter you must add on the Income tax, which for your property works out as 93.50 euros per person.
With regards to purchasing the property in August -
1) Wealth Tax - when you own a property on the 31st December of the year, you are liable for the tax for the whole year - 108.50 euros per person. (When you sell the property, you will not be liable for this tax in the year of sale)
2) Income Tax - this tax is apportionable to the amount of days you own the property. Therefore you will only pay this tax for the number of days you own the property.