WE practices lack an impact on industry, partly due to a WE field that is not quality-aware. In fact, it is difficult to find WE methodologies that pay explicit attention to quality aspects. However, the use of a systematic process that includes quality concerns from the earliest stages of development can contribute to easing the building up of quality-guaranteed Web applications without drastically increasing development costs and time-to-market. In this kind of process, quality issues should be taken into account while developing each outgoing artefact, from the requirements model to the final application. . Also, quality models should be defined to evaluate the quality of intermediate WE artifacts and how it contributes to improving the quality of the deployed application. In order to tackle its construction while avoiding some of the most common problems that existing quality models suffer from, in this paper we propose a number of WE quality models to address the idiosyncrasies of...