Your lawyer will run all of these, but knowing what to check makes you a smarter buyer.
Nota simple
Land registry extract proving ownership, charges and any debts attached to the property.
IBI receipts
Last 4 years' council tax receipts to confirm no arrears.
Community certificate
Confirms no outstanding community fees.
Licences
First occupation licence (Licencia de Primera Ocupación), works licences, holiday rental licence if applicable.
Energy certificate
Required by law to be provided by the seller before signing.
Planning compliance
Crucial for rural properties — confirms no illegal extensions or unregistered works.