The taxpayer submits the declaration/declarations for establishing the building tax, accompanied by the supporting documents.

The supporting documents are:

In case of property transfer:

 Sale-purchase contract;
 Exchange contract;
 Certificate of inheritance;
 Donation deed;
 Partition deed;
 Fiduciary contracts;
 Dation in payment contract;
 Restitution ordinance;
 Award deed;
 Judicial decision;
 Financial leasing contract + handover/receipt report of the property

In case of a newly constructed building
 Building permit + completion reception report OR reception report regarding
the stage of the works;
 Notarial declaration (for those built without a permit) and the topographic/cadastral work.

In case of buildings public/private property of the state/UAT conceded, leased, given in administration or use as the case may be.
 Concession contract;
 Lease contract;
 Commodate contract;
 Local/county council decision regarding giving into administration or use + handover-receipt protocol/report

BUILDING SKETCH (houses) / TECHNICAL MEMORANDUM (new houses): on all levels, with external dimensions.
ENERGY PERFORMANCE CERTIFICATE: for buildings with sale/purchase contract or completion report
IDENTITY DOCUMENT: for co-owners/authorized person
POWER OF ATTORNEY: if the submission of documents is not done by the owner (in original). The form can be found
here.