dear wanna, i think you really need to start from the beginning.
firstly you need to get your archiect to sort out all the issues with your drawings, and supply you with the foundations and beams/columns etc. that will then be a 'full set' of working drawings.
without these the builder cannot build the house!!! (well he may, but it will be wrong).
secondly you need a boq, this can either come from you architect, or your builder.
your builder may not give you a boq, especially as you are a labour only job.
so you may have to do it yourself!!!!
i know, i know, seems daunting doesnt it, but it is possible. start today by working out how many sqm of blocks you will need. post ya answer here.