You need to go to the town hall (ayuntamiento) of the municipality where your property is located. They should be able to tell you the postal address of your property. A useful website for finding the contact details of ayuntamientos throught Spain is http://www.vidauna.com/ayuntamientos/ayuntamientos.asp
Everything you need to know about property in Spain
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.