Cut out the main section of the house. Cut out the two open parts for the front porch of the house. If you are looking for a challenge you can cut away the black areas between the four columns on the sides of the house.

Score the fold lines. Use a tweezer to fold the side walls down without mangling the thin pieces over the front porch.

Cut out the front window of the house. Fold the tabs back and glue inside the walls. Line up the sides of the front window with the edges of the side walls and the bottom of the window with the top of the porch supports on each side.

Cut out the floor of the house. Note that the three large tabs are reverse-folded. Score on the back of the paper and fold upwards. Fold the stairs down at a slight angle and the thin end of the porch down.

Push the stairs through the slot at the top of the porch support on the right side of the house, as indicated in the diagram. Glue the large tabs inside the walls and the front porch against the edges of the porch supports on each side of the house.

Glue the lower porch to the house, matching the columns on each. The upper stair can be glued in place to the lower porch.

Now your Farnsworth House model is finished!