Literature suggests that families may accommodate patients' symptoms in attempts to alleviate family conflict and stress. These accommodating and enabling behaviours may have a negative impact on carers and those they care for. There are no self‐report questionnaires validated in Spanish to measure accommodation among relatives of patients with an eating disorder. The aim of this study was to examine the psychometric properties of the Spanish version of the Accommodation and Enabling Scale for Eating Disorders (AESED‐S) among relatives of eating disorder patients. A cross‐sectional study of 90 relatives was carried out to explore the factor structure, reliability and validity of the AESED‐S. The internal consistency of the Spanish version of the AESED subscales was good, ranging from .89 to .81. The correlation of the five subscales with conceptually related measures (negative caregiving experience and distress) supports the convergent validity of this instrument in this sample. Results indicated that the Spanish version of the AESED provides a reliable and valid tool for assessing family accommodation in the context of having a relative with an eating disorder. Copyright © 2015 John Wiley & Sons, Ltd and Eating Disorders Association.