The goal of this Bachelor’s thesis was to study the open-sourced 3D-modeling software called Blender, and how it is suited for architectural modeling. Blender will be compared to other well-known CAD-software, and the clearest differences between them will be dis-cussed. Originally Blender was created for more visual and photorealistic rendering than the default CAD-software used in architecture, although Blender does have some architectural add-ons. This thesis also goes through the basic principles of using Blender. Different approaches for modeling such as “low-poly” and “high-poly” are discussed, and how different materials and textures can affect the model. Also, the possibility to create fake geometry with materials and textures is...