Draw the basic structure of the ranch house using the rules on perspectiv and vanishing points. Sketch an X from corner to corner of the middle and right-hand vertical lines. Draw a vertical line up through the center to show where the top of the roof will be. Connect the top of this line with the left point to establish the top of the roof.
Use two diagonal lines to connect the roof line with the side of the house. Draw a diagonal line to connect the top of the roof with the side of the house. Use the rules on drawing lines that are parallel to the base of the building for the foundation. Draw another set of lines around the bottom of the roof.