CEN committee TC250 is currently working on an update of the Eurocodes. Sub-committee SC10, in charge of updating EN 1990 (Basis of structural and geotechnical design), has installed a working group to produce a background document with the working title ‘Reliability Backgrounds of the Eurocodes’, with the intention to document and explain the reliability framework underlying all Eurocodes and the implementation of reliability aspects in them. To support the above effort, ISSMGE-TC304 performed a systematic review in the geotechnical literature on geotechnical property variability and the model uncertainty. The findings from the review are compiled into a report titled “State-of-the-Art Review of Inherent Variability and Uncertainty in Geotechnical Properties and Models”, which is now released and can be download here. While updating of the Eurocodes triggered the work on the present state-of-the-art review, we trust that the information contained will be a valuable resource for other codes of practice as well as for researchers and practitioners in the field of geotechnical reliability.