What is the Cost estimation of 3BHK Building? Cost estimate for 1850 sft area?

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By Shravan

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What is the Cost estimation of 3BHK Building? Cost estimate for 1850 sft area?

Cost estimation is the process of determining the total price which is required to construct the building or structure. In my previous article I was explained how to determine the cost estimation for 1000sft area please click here to read cost estimation of building for 1000sft. As per the previous article the cost is calculated based on the square feet area. For 1sft the cost is assumed as 1800 Indian rupees, so the final cost is 1800000 rupees is obtained for 1000 sft area.

In this article I will explain you how to calculate the cost of the whole project of 1850sft slab as per short wall method.

cost estimation of building
                                       Cost estimation of 3BHK building

Cost estimation methods

Basically as per the standards the estimation of the cost is made by using two methods which are described below

  1. Long wall and short wall method
  2. Center line method

Long wall and short wall method

This is the most frequently used method used to determine the cost estimate for the building or structure. In this method the dimensions of the rooms are measured initially the outer to outer wall distance in both X direction and Y direction are determined. The wall having higher dimensions is considered as long wall and the wall perpendicular to the long wall is taken as short wall. Basically in long wall the length decreases from earth work to super structure and in the short wall the length increases from the earth work to the super structure.

cost estimation excel sheet
                                   Cost estimation table

Center line method

This method is generally used when the length of the walls in X and Y direction having same dimensions. In this the total center length of the wall is multiplied with breadth and depth of the respective item to get the total quantity of the work. The estimate prepared by using this method is most accurate and quick method than long wall and short wall method.

Building plan used in the estimation

The below specified figure is the building plan used to determine the cost estimation for 1850 sft slab area. The typical floor plan consisting of 3BHK house which is existing in east facing direction. It contains 3 bed rooms, 1 kitchen, 1 drawing room, 1 dinning. And the building plan contain 4 numbers of columns.

cost estimation plan
                                   3BHK Building plan for cost estimation

Detailed cost estimation for 3BHK 1850 sft slab area

The below table shows the cost calculation of ground floor building with 1850sft area. It will be consists of earth work Excavation, PCC , RCC M30 design mix, Steel Requirements, Brick masonary including labour and Transportation charges, Plastering with 20mm thick including transportation and labour charges, Colour wash with 2 coats including the labour and transportation cost and electrical work.

S. No Description of item No’s Length Breadth Depth Quantity Rate Amount
1 Earth work Excavation           200 57734.2
Columns 14 2.14 2.14 2.1 134.64
Long wall 3 16.92 2.14 0.83 90.159
Short wall 4 8.99 2.14 0.83 63.872
          288.671
2 PCC 1:4:8           4875 266277
Foundation          
Columns 14 2.14 2.14 0.22 14.105
Long wall 3 2.14 2.14 0.22 3.022
Short wall 4 2.14 2.14 0.22 4.03
Basement 1 16.92 8.99 0.22 33.464
Gravel filling 1 16.92 8.99 1.2 182.53 400 73012
3 RCC M30 design mix              
A. Footings 14 2.14 21.4 0.6 38.468 8750 402745
B. Columns 14 0.3 0.6 3 7.56
          46.028
C. Plinth Beams          
Long wall 3 16.92 0.22 0.3 3.35 9500 600002
Short wall 5 8.99 0.22 0.3 2.966
          6.316
D. Roof Beams           10000 63160
Long wall 3 16.92 0.22 0.3 3.35
Short wall 5 8.99 0.22 0.3 2.966
          6.316
E. Roof Slab (including extended portion) 1 18 9.5 0.125 21.375 10000 213750
F. Stair case 6 4.36 0.15 3.47 13.616 10000 136160
4 Steel Requirements              
A. Footings 38.468X100kgs 3846.8 105 142960
B. Columns 7.56x130kgs 982.8
C. Plith Beams 6.316x120kgs 757.92
D. Roof Beams 6.316x120kgs 757.92
E. Roof Slab 21.375x90kgs 1923.75
F. Stair case 11.346x120gs 1361.52
5 Brick masonary including labour and Transportation charges           4750 161795
A. Long walls          
B. Short walls          
C. Another walls 1 3.38 3.38 3 34.273
Deductions          
Doors D2 1 0.91 0.11 2.1 0.21
            34.062
6 Plastering with 20mm thick including transportation and labour charges 2 3.38   3 20.28 300 5510.7
Deductions          
Doors 1 0.91   2.1 -1.911
            18.369
7 Flooring              
Parking Tiles 1 16.92 8.99   152.1 2000 299160
Deductions          
Doors 14 0.3 0.6   -2.52
8 Colour wash with 2 coats including the labour and transportation cost         19.22 175 61784.1
          18.369
          353.052
  Total cost of project except electrical             2484049
9 Provisonal for electrical charges (7.5%)             186304
  Final Cost for 1850 sft Floor

 

          2670353

Conclusions of 3BHK building cost estimation

Well now the above explained concepts are related to the construction cost for residential building for 1850 sft slab area.

It is dived in to 9 categories related to the earth work Excavation, PCC , RCC M30 design mix, Steel Requirements, Brick masonary including labour and Transportation charges, Plastering with 20mm thick including transportation and labour charges, Colour wash with 2 coats including the labour and transportation cost and electrical work. approximately it require 2670353/- Indian Rupees 

Please follow our previous posts here

What are the different types of the parameters considered in building design (Read here)

Which bond is best Flemish or English Bricks Read here

Basic rules in building design Read here 

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Your Shravan

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