Approximate method
In this method, probable cost is determined without drawing simply by comparing same type of building in the given locality and it is of 2 types:
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I. Plinth area estimation
- The cost is determined per m2 by comparing with the similar type of building in the same locality by estimating cost per m2 of that building.
Eg. If a building is constructed in locality,
- Cost of a building, (P) = Rs. 75, 00,000
- Plinth area of building (A) = 500 sq m
- Cost per sq m. of the building = 7500000/ 500 = Rs. 1500 / m2
- If you need for n m2 the, Cost =Rs. 1500 x n
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II. Volume / Cubic meter estimation
- Not only the area of building represents its cost but building height differs the cost of building then, cubic meter method is used.
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Eg. If 3 storey building height is 10 m and that building is constructed in area of 500 m2.
- The building cost = Rs. 7500000
- Volume of building = 500 x 10 = 5000 m3 Cost for 1m3 = 7500000/5000 = Rs.1500
- If the height of building is Vm3 then, Cost of building = Rs V x 1500