This is the site of doctoral research in design: "Contributions to a sustainable design methodology applied to the furniture industry: the Portuguese case." It is research based at the Center for Research in Architecture, Urban Planning and Design (CIAUD) of the Faculty of Architecture of TU Lisbon (FA- UTL) and belongs to the 1st edition of the doctoral course in design at the same university. The aim of this research is to develop tools for designers and industry, to support the design process in creating more sustainable furniture, contributing to the paradigm shift towards sustainable production and consumption.