You can apply for the certificate in writing as the owner of a building or as the authorized representative of the owner. Since the certificate is issued on a property-by-property basis, you must always apply for an individual certificate for parts of the building that are independent immovable assets (e.g. underground parking), as well as for condominiums and partially owned rooms. In the case of developer or purchaser models and residential and part-ownership communities, you can instead apply for an overall certificate including the allocation to the individual parts of the building. For this, you need the effective powers of attorney of the purchasers.

The responsible certification authority then checks,

• Whether the building is located in a formally defined redevelopment area or urban development area,
• whether modernization and repair measures or other measures that serve the preservation, renewal and functional use of a building that is to be preserved due to its historical, artistic or urban development significance have been carried out,
• the amount of the costs incurred for the certifiable measures, and
• whether and to what extent subsidies from public funds have been granted by an authority responsible for redevelopment areas or urban development areas or will be granted after the certificate has been issued.

In order to give you clarity about the content of the expected certificate at an early stage, the certifying authority can already provide you with a written assurance about the expected certificate. However, the assurance does not replace the certificate. Therefore, it is not suitable as evidence when applying for tax benefits at the tax office.
However, if you have a legitimate interest, you can use the assurance to apply to the tax office for binding information on the expected tax base of the tax benefits, which is subject to a fee.