3873 Planning Permission Charges - Ostuni Area

Q. Can anybody solve the puzzle of how the commune calculates planning permission both for new build and / or extension to existing building?
We wish to add 30sqm to an existing 340sqm.
Is the calculation based on 30sqm or 370sqm at ?? euro / sqm.
Any advice would be most welcome.
Gracie Mille.

Category
Building/Renovation

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