Purpose: Today the amount of Eco labelled multi-family houses are increasing. The Nordic Swan is a well-known certification that has grown a lot when it’s comes to certifying multi-family houses in Sweden. Unlike other well-known ecolabels there are not many studies done on the Nordic Swan. By studying the certification, and its establishment, in two large projects the goal of this study is to pinpoint weaknesses in the process of attaining the Nordic Swan and then make improvement proposals.Method: In order to provide improvement proposals, a qualitative study was chosen. A study of literature and a document analysis is the foundation of the study by taking theoretical aspects into account, within the Nordic Swan and multi-family housing. The chosen qualitative method is also based on semi structured interviews. The interview respondents were selected as: two production supervisors, a site manager, a quality and environmental coordinator, a project manager and a project developer. All respondents are working daily with the projects, characterized by the Nordic Swan. The different persons were chosen to obtain a high validity of the study. To further increase the validity and its reliability, respondents were given back the empirical data so that they could make further comments and revisions. Reliability was assured by providing well-designed questions.Findings: The goal refers to improvements with the certification, propelling to new knowledge, within the area of the subject. The empirical investigation shows recurring problems with the product database within the certification, seen from the respondent’s experiences of working with the Nordic Swan in projects. They’ve informed about challenges that comes with respective working process. The certification is solid and gives a qualitative product, but has a time-consuming learning process. Overall, the respondent’s focused on the way of working with the ecolabel and the organisations way of managing the product database, both for an older and a new version.The improvement proposals that results from an analyzation of interviews concerns the communication between the Nordic Swan and its customers, how the Nordic Swan’s product database can improve when future versions releases and how the ecolabel could accomplish a greater eco-impact to the projects by promoting “green innovations”.Limitations: The study is limited to the application of the Nordic Swan in multi-family housing in two large projects. As the guidelines in the process do not differ between companies, the result can be considered general. Retrieving information from even more companies on the other hand could have resulted in a more accurate overall result.Implications: The drawn conclusion from the thesis is that the result creates opportunities for improving the certification process. It can also be used to get more companies to use the Nordic Swan. It provides an opportunity for both companies and individuals to farm an understanding regarding the certification. / Kvarteret Mars, Kolla Parkstad.

Hållbar utveckling är ett omtalat ämne i dagens fastighetsbransch. Med flera färdplaner och globala mål som främjar en långsiktig hållbar utveckling har det framkommit system för hur man ska miljöanpassa byggnader. Miljöbyggnad och Svanenmärkning är två system som utvecklats i Sverige. För att följa ett hållbart strategiskt arbetet följer flera fastighetsbolag uppmaningen om ett netto noll utsläpp av växthusgaser 2045 i fastighetsbranschen. Detta föranleder ett ökat initiativ av att bygga hållbart och miljöanpassa redan befintliga byggnader.   Syftet med uppsatsen är att utföra en studie på hur de svenska miljöcertifieringssystemen, Miljöbyggnad och Svanen, förhåller sig till ett hållbarhetsarbete samt hur dessa certifikat värderas i fastighetsvärderingsprocessen. Studien kommer i förhållande till certifieringarna granska värderingsprocessen för att undersöka om certifikatet har ett ekonomiskt värde och analysera sambandet mellan miljöcertifiering och marknadsvärdet.  Resultatet av denna undersökning antyder att bostäder som är miljöcertifierade inte påvisar ett tydligt ekonomisk värde i relation till marknadsvärdet. Dock konstateras det att avgiften som erläggs på dessa bostadsrätter är betydligt lägre än de konventionella bostadsrätterna. Ett resultat av detta visar att miljö- och hållbarhets attributerna som existerar i dessa bostäder resulterar till en lägre avgift i jämförelse med de icke-miljöcertifierade bostadsrätterna. Småhusen påvisar ingen ökning av marknadsvärdet om en Svanenmärkning finns. Slutsatsen som tagits i detta arbete är att värderingen kring både bostadsrätter samt småhus vare sig dessa är miljöcertifierade eller ej ger en svår bedömning om det finns en tydligt korrelation mellan miljöcertifieringen och marknadsvärdet. / Sustainable development is an ongoing topic in today's real estate industry. With several roadmaps and global goals that promote a long-term sustainable development, systems for how to adapt buildings to the environment have emerged. Environmental Building and Nordic Swan Ecolabel are two systems developed in Sweden. In order to follow sustainable strategic work, several real estate companies follow the goal for a net zero emission of greenhouse gases by 2045 in the real estate industry. This leads to an increased initiative of sustainable development and adapting existing buildings to the environment. The purpose of the thesis is to carry out a study of how the Swedish environmental certification systems, Environmental Building and Nordic Swan Ecolabel, relate to sustainability work and how these certificates are valued in the property valuation process. In relation to the certifications, the study will investigate the valuation process to examine whether the certificate has an economic value and analyze the connection between environmental certification and market value. Results of this survey suggest that homes that are environmentally certified do not show a clear economic value in relation to the market value. However, it is noted that the fee paid on these condominiums is significantly lower than the conventional condominiums. A result of this shows that the environmental and sustainability attributes that exist in these homes result in a lower fee in comparison with the non-environmentally certified condominiums. The single-family homes do not show an increase in market value for houses with a Nordic Swan Ecolabel.  The conclusion drawn in this study is that the valuation of both a condominium and a single-family home, whether these homes are environmentally certified or not, is difficult to assess whether there is a clear correlation between the certification and the market value.