That depends on where you start. I finished the first draft in January 2008. I then had four full cast readings and multiple single reads by people I trust, with all the subsequent revisions before I felt I could pursue production. Once we had (most of) the money, production took about 24 days. I say "about" because for a few months after principal photography, I was still chasing certain shots that the edit revealed to be necessary. Post production took about two years. Mostly because I was responsible for so much of it. The score took about 6 months to complete because we spent a lot of time trying to identify the tone of the music and what its specific function was to be for each cue. And then sometimes we changed our minds.