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Differences in foundation costs #1

Mr Fred
last month

We plan to build a 200m2 home on a gentle slope. (1.5m along the 31m site)


We are seriously struggling with knowing the cost differences between building on piles, a single or double height slab or even filling part of the site with Polyrock to get the end of the building facing the sea about 1.4m off the ground.


What's a general rule of thumb of costs of piles v rib raft slab? Are piles more expensive? By how much? - double or just 10% more? Or???


Your advice welcome.



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