I have a 2 story house that in the spring I need to get up on. I have a ladder that extends to 16 feet. What is the length of ladder I need?

So, let me do some MATH, FOR YOU; if you have 8' ceilings on both stories, that's 16', plus 4' for the foundation and 1st floor platform, is 20', plus 1' for the 2nd floor platform, that's 21', plus 3' above the roof eve, that's 24', and because the ladder will set at an angle, and depending upon what angle you are comfortable with, 1 or 2 more feet, so that's 25' or 26'. So just buy, or rent a 30' ladder. See how tough that was.

Standing those can be a treat by yourself, rent it have it delivered and get that guy to help put it up and take it down.