This is probably one of the most important steps in your process and a very personal one because it is your space and only you will ultimately know how you will use the space - and what will make you happy. If you are unsure wait until you do know. In fact, many people would advise you to live in a space for up to a year before you decide to renovate. Based on my experience from previous renovations I would have to agree. So, if you are unsure wait.
Some key points to consider:
· Is it an investment space that you will rent?
Once you understand your goal the planning phase can begin.