In Cuba, the Cuban technical standard NC 127:2014 establishes requirements for the classification by categories of newly built tourist accommodation establishments. However, specific requirements for classifying heritage tourist accommodation by category have not been established. The objective of this research is to propose a Cuban technical standard of requirements for the classification by categories of tourist accommodation in valuable heritage buildings. The authors conducted a literature review to establish the characteristics and requirements of this type of accommodation. In addition, consultation was made with experts on categorisation and tourism to increase the validity of the characteristics and requirements identified from the preliminary statistical analysis. The proposed technical standard contains the necessary requirements for the classification of heritage tourist accommodation distributed over nine critical areas.