All business property has a rateable value unless it is exempt from rates. The rateable value of non-domestic property is fixed in most cases by an independent valuation officer of the Valuation Office Agency (not Ealing Council). From 1 April 2017, the rateable value of a property represents the annual open market rental values of 1 April 2015.
A general revaluation of all non-domestic properties is normally carried out every five years. The last revaluation was in 2017.