Example
What does it look like in practice?
For a residential building, the final document may be a certificate of commissioning from the authority that issued the permit, and for another applicable building, a permit for use after a different procedure. The popular "Act 16" hides this difference.
The answer starts from the category specified in the construction documents.
What is it commonly confused with?
A higher category does not mean a better quality construction, a higher price or a more reliable investor. The low number is not a certificate of luxury, but an administrative classification.
The category of a whole complex may require a distinction between buildings, infrastructure and individual stages.
Why does it matter?
For the buyer, the category helps to understand who issues the final deed, what document to look for and why two buildings have different procedures. Without it, it's easy to ask for the wrong document or assume that the missing colloquial "Act 16" means no legal entry.
The category helps to understand which procedure is applied, but it does not prove the current stage of construction.
What to ask
What should you check next?
Check the category in the building permit and subsequent documents for the exact scope. Match it with the competent authority and the final document without relying on the common name used by the seller.
If the project is in stages or includes separate infrastructure, ask for a clear list of which act and which category apply to which part.