Condition analysis shall be performed at registration level 1 according to NS 3424 at all of Avinor’s airports, except OSL Gardermoen and Haugesund Airport. Condition analyses shall be performed on all buildings over 100 m2 and energy labelling in accordance with NS 3031, of all buildings over 1000 m2. Only objects for which Avinor is responsible shall be part of the condition analysis.