This question is often asked by consumers phoning into the office -"what is the cost of building per square metre these days"? This is a total misnomer and is something that stems from mainly rural house contractors or inexperienced developers selling plot and plan who tell prospective clients the cost of building is x/m2.
A cost per square metre can only be a rough estimate when based on the same ingredients in the mix as well as the same configuration on plan and position, of a structure already built.
To illustrate the misnomer of a cost per square metre consider the following:
(a) Room size 4m x 5m = 20 m2 (b) Room size 10m x 2m = 20 m2
Both 20m2 but (a) has 18 lm of walling and finishes and (b) has 24lm of walling.
(a) will be the cheaper option /m2 yet they are both 20m2. Be extremely wary of a builder that quotes on a per m2 rate, as the configuration of the walls or plan is what determines the price of the basic construction element.
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