This book incorporates UK and international case studies and essays to identify the overlaps in the interests of energy and building conservation. The relevance and adjustments of qualitative and quantitative frames of reference are introduced, alongside the various expertise of the contributors: architects, designers, conservation consultants and academics. The second part of the book showcases sustainable domestic and non-domestic heritage projects, translating the preceding research into information that practitioners can use in their everyday work. The book will be appeal to architecture students, newly qualified professionals and conservation architects and will enhance readers' ambitions, so that they feel equipped and inspired to work with old buildings sensitively, creatively and sustainably. - Unique Approach: offers a primarily research-based based approach but applies this to practice - Provides a local and a global perspective: via the essays and case studies chosen - Draws together contributions from people who might not necessarily see themselves sharing similar agendas- It looks at the conservation of very old as well as twentieth century buildings which share global significance- It intends to inspire young architects and students to raise questions and increase debate rather than deliver recipes for solutions.