RICS recognises that clients may request valuers to provide a report that complies with valuation standards other than the Red Book.
When following clients’ instructions, RICS members may use a different valuation standard, provided the valuer also complies with Red Book requirements. Any deviations from Red Book must be clearly disclosed, along with the reasons for the departure. Please refer to section PS 1, paragraph 6 of Red Book Global Standards for more information.
By following these departure guidelines, the valuation is still considered a “Red Book Valuation” and meets RICS standards. Therefore, it is possible to apply another standard while also conducting a valuation that complies with the Red Book.
It should be noted that the International Valuation Standards (IVS) do not permit any departures. Therefore, while a valuation with departures can be compliant with Red Book, it cannot be considered compliant with IVS.
Following the publication of the RICS Valuation – Global Standards, effective 31 January 2025, the most significant changes to the previous version of the Red Book have been explained in this document.