So far I’ve been using the following tool to manage this renovation project:
Google Docs Spreadsheet

For collecting a log of which contractors and which suppliers I’ve contacted, when, and the results. This is crucial for keeping track of who you need to follow up with.
For listing all the work that needs to be done in detail.  [...]

Having never done anything even remotely like this before, acting as the designer and general contractor has been an enormous amount of work.
I’d the say the hardest, and most time consuming thing has been the design.  There are so many options available.  So many it’s almost paralyzing.  Over the past year I’ve been chipping away [...]