Project house on WGS84

I have imported a DXF file of my house in QGIS. I also included an openstreetmap layer in WGS84 which also displays my house as a square. Naturally, my house from the DXF file is placed in the ocean at coordinate 0, 0. What I want is to project my house in WGS84. How do I proceed? I am looking for something, like to draw a square around my house in the openstreetmap layer to indicate where to project the data. Is this possible in QGIS or should I follow some other approach?