Standing up extension ladder in narrow space
About 2-3 feet from the side of the house, lay the ladder down parallel to the house placing the feet of the ladder as close to their desired location as possible (the length of the ladder may not allow you to place it exactly where you'd like it at this step).

Brace or have a second person brace the feet of the ladder, and from the opposite end, lift the 'top' run over your head and walk your your hands toward the base (monkey bar style), until the ladder is fully vertical. 

Once vertical pivot the ladder on the foot closest to the house, squaring the ladder to the house. If your ladder is not yet high enough you can extend it now. Walk your hands back toward the top of the ladder until the ladder rests against the house (usually only is about 1 rung).