Dutyholders of all non-domestic properties within the UK must establish an asbestos register and a management plan. The definition of "non-domestic" is "a property or structure (commercial, domestic or residential) where work is carried out" and the obligation of a "dutyholder" is to ensure that people are not exposed to any asbestos-based materials during the course of their work. The Asbestos Register states the presence or non-presence of asbestos related to the inside and outside of the structure. The exception is where the property age (post-1999 when chrysotile asbestos was banned) would indicate that such products will not have been used during the construction of the building.