**Preface**

The building sector is evolving towards a more efficient management of natural resources and the incorporation of circular economy criteria. In this way, the recovery and revaluation of construction and demolition waste (CDW), energy efficiency or the development of new composite materials are some of the lines that define research in building engineering in this decade. This work compiles some of the most cutting-edge research on sustainability in building, showing advances in the development of new materials, more efficient construction systems, the recycling of construction waste and other topics of interest to construction professionals.

In this sense, the Guest Editors and the research group "Monitorizacion e Innovaci ´ on Tecnol ´ ogica ´ en Edifcacion (MITE)" would like to thank all the researchers for their collaboration, and for their ´ confidence in this MDPI Topic. We sincerely hope that the work will be useful for other professors, professionals, and researchers, and that future editions will receive the same level of participation. For all these reasons, we can only say thank you.

> **Carlos Mor ´on Fern´andez and Daniel Ferr´andez Vega** *Editors*
