This paper presents SAAF, a Semantic Accessibility Assessment Framework for personalised Web accessibility assessment procedures. We define four domains as a way to decouple general accessibility concepts and semantics (e.g., disabilities, device descriptions) from technology or assessment specific concepts. We leverage personalised Web accessibility by transforming questions such as “is this Web site accessible to me?” into rich-semantics queries on SAAF and integrate it into a Web accessibility evaluator. Categories and Subject Descriptors