Background: National minimum standards for residential care homes were introduced following the Care Standards Act 2000 in response to concern about the lack of consistency and poor quality services. These standards are intended to reflect outcomes for service users and to be comprehensive in scope. Method: This study compared ratings made by care standards inspectors with research measures for 52 homes for people with intellectual disabilities serving 299 people. The research measures focused on the lived experience of residential care, including engagement in meaningful activity, choice and participation in activities of daily living. They also included measures of related care practices and organizational arrangements. Results: The research measures were in general significantly correlated with each other. Most of the care standards ratings were also correlated with each other. However, only two of 108 correlations between care standards and research measures were significant. Possible reasons for this are discussed. Conclusions: This study confirms that the review of national minimum standards and modernization of inspection methods recently announced by the Department of Health and the Commission for Social Care Inspection are timely and appropriate.