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 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.

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.

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 

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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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