Estimates can vary wildly for costs when building a shed. Each project is different, and there are various things that influence final price.
We have calculated the average cost-per-square-metre below for some of our main industries. It is very possible that your actual cost will differ, but you may be able to use these figures for relatively simple shedding.
NOTE: These are estimates and actual prices may fall outside of the range. The exact cost per square metre comes down to a number of things, including height and complexity. Projects can differ.

Farm Buildings

Including: Hay Shed, Machinery Shed, Grain Shed, Cattle Sheds etc.
Average cost per square metre: $67m2 – $110m2
Typical size: 24m x 18m at a cost of $45,620 

Equestrian Buildings

Including: Indoor riding arenas, stables, equestrian complexes etc.
Average cost per square metre: $90m2 – $136m2
Typical size: 41m x 21m Arena Cover at a cost of $83,760. 

Commercial Buildings

Including: Offices, showrooms etc.
Average cost per square metre: $130m2 – $229m2
Typical size: 36m x 22m at a cost of $122,000.

Industrial Buildings

Including: Factories, warehouses, large workshops etc.
Average cost per square metre: $106m2 – $176m2
Typical size: 36m x 20m at a cost of $76,220.

Custom Buildings

Including: Habitable Dwelling Frames & Liveable Sheds.
Average cost per square metre: $190m2 – $454m2
Typical size: 15m x 20m at a cost of $57,150.

Educational Buildings

Including: Ball court cover, learning areas etc.
Average cost per square metre: $99m2 – $149m2
Typical size: 32m x 17m at a cost of $80,130.

Aviation Buildings

Including: Aeroplane hangars & helicopter hangars.
Average cost per square metre: $187m2 – $281m2
Typical size: 18m x 18m at a cost of $70,370.

READ MORE:
How Far Does My Shed Have To Be From The Boundary Or Fence 
Concrete Slab Cost Calculator