The purpose of this thesis is to get knowledge about how it is to work as a librarian at Gothenburg city library during a rebuilding process and during the time when they have worked in a temporary library so called niche library. Which part did they have in the renovation project and in the niche library? The aim is also to find out how the librarians have experienced their time in the niche library and if it has affected their profession and identity.The method that is used to answer questions of the study is semi-structured interviews with four public librarians. Through comparing previous research in building and rebuilding process I have analyzed the four public librarian?s part in the renovating process and the temporary library.

How the renovation of the vast Swedish existing building stock with renovation needs will be performed is considered as decisive in order to achieve the target set by the Swedish government of reducing the energy use by 20 percent by 2020. Consequently, the challenge of the building sector consists in reducing the energy use in the existing building stock but at the same time ensuring that the indoor environmental quality is improved and the cultural values are maintained.So far, there have been a few renovation projects which strongly have reduced the energy use and at the same time have taken into account the environmental aspects and the cultural values. The main reasons are that there have been few incentives and a lack of routines in order to steer efficiently a ?sustainable renovation?.The participants in a Nordic project on sustainable renovation thought that it would be a strong advantage to link the concept of sustainable renovation to the Miljöbyggnad certification system. Indeed it is trusted by the Swedish building and construction sectors and can provide sustainability targets in order to steer renovation processes.The objective of the master thesis is to show how the Miljöbyggnad certification system could be integrated in practice in the renovation process of Riksbyggen, an organization which administers housing associations (Bostadsrättsföreningar) and build houses.