Building a home. FHB – looking for book or definitive list of “hidden” extras

Hi folks,
 can anyone recommend a comprehensive book or "bible" that lists all the "hidden" extra costs that can be incurred when building a new home? OR perhaps one of you experienced investors/developers that has a list they use already.

 We are first home buyers/builders (i.e. full$21k eligible and stamp duty exempt in qld up to $500k) and have just agreed to purchase a block of land. I think we negotiated a good deal and now I am busy looking through home designs and builders here in south-east queensland. I would like to form my own independent opinion of the total costs as I am trying very hard to keep the price under $500k to avoid paying as much stamp duty as possible. We are more than happy to forgoe cosmetic niceties to ensure we get a good structure built on the land that we can add to over time. (i.e. The house has all the basics we will ever need but we are happy to add the pool, fancy landscaping, air conditioning, granite benchtops, alfresco area, fancy driveway, fancy gate etc later as we get the funds to do it.)

 The land is "largish" (~1200m2), zoned residential "A", in an established area with access to all standard amenties (power, sewers etc). The land is flat and the soil seems to be a standard "M" class but I will need to wait on the actual test results. It is not in an estate and their are no covenants on land other than the standard council rulings. I have reviewed these and don't see anything that rings an alarm in my head.

 I have picked up bits from forum searches, but nothing that I would consider definitive. So if anyone knows or has anything I can use, please do point me in the right direction.

 FYI- I am tempted to just build on half the land and just "light" landscape the other half until I can subdivide and build townhouses. I don't think this will fly with the missus, but I will post a separate forum topic on this to get some thoughts. So don't worry about the extra costs with this.;

 As a quick note to those "negative nellies" that may be reading –> Anyone that has anything negative to say about buying and building new in the current financial climate…please don't waste your time on me, just keep it to yourself or another thread. I have done my homework, am cashed up from years of saving, am a natural "contrarian" and totally confident with my purchase. I am jsut rolling up my sleeves for the real hard work.

Thanks in advance for any assistance, I am keen as mustard to learn ,
emptyvessel