We have already covered the requirements for becoming an accredited assessor but it does not do any harm to summarise them here.
To become an accredited assessor an individual must:
New applicants do not need to demonstrate participation in an assessment, but accredited assessors applying for re-accreditation must demonstrate a minimum of 50 hours participation on formal or informal assessments in the previous 36 months (based on assessment results accepted by the TMMi Foundation).
To become an accredited lead assessor an individual must:
Applicants must demonstrate:
How assessments are run is defined in TAMAR (TMMi Assessment Method Application Requirements). TAMAR is not a defined assessment approach but describes what requirements an assessment method should meet.
Organisations develop their own method based on TAMAR. The method can then be officially accredited by the TMMi Foundation.