The preliminary plan was put in our contract by an admin error!
So in the end you only paid 7k for all your foundation works?
Yes Cel, that was our final price for all site
Not sure where and how I can compare costs for piles / piers.
Our preliminary slab design requires concrete piers about 80 of them between 600mm to 2m as the whole block is filled and the waffle slab itself is costing us about 16000 while the piers will be a separate 13000