This study aimed to investigate the presence of pain, pain duration, localization(s), intensity, type and pharmacological treatment among older adults living in sheltered accommodation or receiving rehabilitation, as well as the agreement between pain assessments performed by staff and the older adults. Twenty-nine randomly selected older adults (65+ years) and the staff who looked after them participated in a structured interview based on standardized measures for pain assessment and physical, intellectual and communicative functions. Pain was found to be common, with a majority of participants experiencing it every day or all of the time. Nine out of 22 of the older adults in pain had no pain relief drugs at all. Agreement between assessments by the older adults and the staff was no higher than moderate and in general pain levels were underestimated. The findings indicate that older adults were at risk of undetected and untreated pain and the risk was even higher for those with speech difficulties. The provision of good nursing care for older adults in sheltered accommodation requires systematic routines for frequent pain assessments.