Example
What does it look like in practice?
The project may indicate a built-up area of 8,500 sq.m for the entire building, while the apartment in the offer is 92 sq.m "with common parts". The first number describes the scale and parameters of the building. For the second, it must be specified what the area of the dwelling is and what common or appurtenant parts have been added.
Dividing the total price by the living space does not give a price per square meter for the home.
What is it commonly confused with?
The built-up area is not the built-up area of the building footprint, the net area of the apartment or the cadastral area of the stand-alone site. The colloquial "total square footage" can refer to an entirely different number.
Do not assume by default that a certain level is on or off - this should be verified according to the regulatory methodology and the project.
Why does it matter?
For the buyer, the zoning plan helps explain the project's scale, development parameters, category and overall density, but it does not define what the buyer is acquiring. Confusing these figures with the home's area can distort a price comparison.
When reviewing a project change, the RFP is one of the indicators that the architect can compare between the individual documents.
What to ask
What should you check next?
Find out for which building, stage or permit the RZP is indicated and from which approved project the number comes. For the apartment, request a separate table for the area of the object, undivided shares and accessories.
Do not use the RZP as a substitute for checking the subject matter and square footage in your contract.