You can start with an inspection of your home from inside and outside. You can check the windows first to find out if there are windows which require change. You can move to your kitchen now. This are always needs improvement because kitchen start accumulating the things which must be there and must not be there. So you need to decide if you want to create more space in your kitchen. Now, you need to take detailed look at the roof. If the roof is leaking in rainy season, then you may need to get it repaired.  Make a list of the things and the tasks which are absolutely necessary and also of those which can be deferred for the next time. Next step is to attach the funding which must be logical and with an estimate of cost of total listed jobs. Next, you need to find a contractor who can finish the job in time and budget.