As an Erasmus exchange student from Belgium, currently living in Finland, the author of this thesis was very interested in buildings and in particular the difference in foundations between these two countries. That was the reason for this subject. The purpose of this Bachelor’s thesis was to gather information on foundations in general and also point out the biggest differences between foundations in Finland and Belgium for small- to normal-sized buildings. The information that was used to write this thesis was first of all extracted from several specialised books. Secondly there were the meetings with the supervisors, who were very interesting and educational. Most of the special other structures were taught during those meetings. The results from these meetings were summarized in this thesis, together with extra information added from educational books and reports. The conclusion of this thesis is that both countries have differences in their construction of foundations and that some differences may be interesting to investigate more. Some structures on the other hand are just not useful in the other country, because of the difference in climate.