Is the property according to the interior area or the construction area?

Legal analysis: According to the relevant provisions of the national property management regulations, unless otherwise agreed, in general, the property management fee is charged by the owner according to the building area, which includes two parts: one is the interior building area, and the other is the shared area.

Legal basis: Article 271 of the Civil Law of People's Republic of China (PRC), the owner enjoys the ownership of the exclusive part of the building such as the business building, and the condominium of the * * * part other than the exclusive part.