A new site- and construction-law came into effect in May 2011. The new law, PBL 2010:900 implies several different changes of the law. These changes concern both constructors, people working in municipality and county councils and other people that in some way are related to the building sector. Except from the change in order of the chapters and the renewed and modernized language, the law has now been extended with a few new phases. According to the new law a certificate has to be issued to start and finish the construction; the construction consulting has changed name into technical consulting and the protocol for the controls has to show what the control is being compared to. This diploma work concerns control visits on construction sites as related to the new law. The reason why visits on construction sites are now implemented in the law is because the government saw a lack of trustworthiness in the old law. This because there was no kind of control that what was once approved to be built actually was being built, and nothing else. There was neither any controls to see if the building was actually following applicable rules and regulations. Because of this, the municipalities are now in need of education to deal with these changes in the law, especially when it comes to visits on construction sites. Even though the authority Boverket is offering a lot of information and education and even though there are several accredited companies that handle the education in the new law there is room for a deepening investigation in the matters of the visits. The municipality of Tierp had a request for guidelines on how to handle the visits. Therefore, in this thesis, guidelines for these matters of site visits have been proposed.