I think the Op probably means the non resident’s property tax. That is the form 210.
If so it can be completed on line and paid at one's bank, or maybe any bank.
If that is what you mean, take a look here, info in English and the form.
http://www.agenciatributaria.es/AEAT.internet/en_gb/GF00/informacion.shtm
(Copy and paste it into your browser).
NB. Â If there is more than one owner each must complete a separate form, for their percentage of the ownership. Also. Unless they have changed the program, you need to sign out and start again for the second return as the program allocates a unique number, each time the page is opened.