Introduction: This study investigated the reliability and validity of the dynamic risk outcome scales--short version (DROS-SV). This instrument is developed to monitor treatment progress using dynamic risk factors in clients with mild intellectual disabilities or borderline intellectual functioning and behavioural and/or mental health problems. Method: Data were collected from 264 clients who received Flexible Assertive Community Treatment (FACT), a form of intensive outpatient treatment. Results: A principal component analysis showed that there were six components explaining 73.9% of the variance. Furthermore, the DROS-SV showed good internal consistency of its subscales and total score ([alpha] > 0.78). Correlating the DROS-SV with the Historical and Clinical subscales of the Historical, Clinical and Future--30 indicated convergent and divergent validity. Discussion: The DROS-SV has good psychometric properties for measuring dynamic risk factors in clients with mild intellectual disabilities or borderline intellectual functioning in FACT teams.