3 BHK (3 bedrooms, 1 hall and 1 kitchen) houses are a common residential typology. They can be found in both urban and rural settings, where they function as comfortable dwellings for nuclear families and joint families, as well as retirement homes and student residences. Despite being so common, constructing a 3 BHK house can be a challenging task, especially since one has to navigate through extremely contradictory construction rates proposed by various contractors and builders. This blog serves as a comprehensive guide for you to understand how to calculate the cost of building a 3 BHK house, enabling you to navigate home construction easily. Read on to learn more.
Factors That Affect a 3 BHK Construction Cost
- Area: The carpet area, built-up area and super built-up area of a house determine the overall building cost, which is derived by multiplying area values with the construction cost per square foot. 3 BHK home areas generally range from 650 sq ft to 3000 sq ft.
- Number of floors: Although a 3 BHK house can be accommodated on a single floor in plots with a minimum area of 700 sq ft, it is often spread across two storeys. The number of floors impacts the 3 BHK home construction cost as additional floors mean that additional area is required for including staircases, landings and other circulatory spaces.
- Specifications of site: The location, size, soil strength and terrain conditions of the soil have an effect on the construction cost. For example, the 3 BHK house construction cost in village areas might be lower than the cost in cities, owing to the availability of cheap labour.
- Design features: Complex architectural designs with intricate details cost more than simple and minimalist house designs.
Calculating the Area Required for a 3 BHK House
A 3 BHK house can generally be spread across one or two floors. The minimum room sizes in both these types are usually:
- Bedroom 1: 10’0” x 10’0”= 100 sq ft
- Bathroom 1: 4’0” x 7’0”= 28 sq ft
- Bedroom 2: 10’0” x 10’0”= 100 sq ft
- Bathroom 2: 4’0” x 7’0”= 28 sq ft
- Bedroom 3 (master bedroom): 10’0” x 12’0”= 120 sq ft
- Bathroom 3: 5’0” x 8’0”= 40 sq ft
- Living room (hall): 10’0” x 12’0”= 120 sq ft
- Kitchen: 8’0” x 8’0”= 64 sq ft
Carpet area= 600 sq ft
Apart from these rooms, areas of other spaces may vary in a single storey and two storey 3 BHK house as shown in the following 2 examples:
- Single storey 3 BHK house with no car parking:
Area of walls in plan (assumed to be 10% of the carpet area which is 600 sq ft)= 60 sq ft
Total built-up area= 660 sq ft
- Two Storey/ Duplex 3 BHK house with one car parking:
- Balconies (assumed to be 2 in number): 60 sq ft
- Utility: 50 sq ft
- 1 Car parking: 150 sq ft
- Staircase and landings: 100 sq ft
Total carpet area= 700 sq ft (600+staircase area)
Area of walls in plan (assumed to be a minimum of 10% of carpet area)= 70 sq ft
Built-up area= 770 sq ft
Area of semi-enclosed spaces (balconies, utility and car parking)= 260 sq ft
Super built-up area= 1030 sq ft
This is a single-storey 3 BHK house plan in 1200 sq ft plot, with a super built-up area of around 900 sq ft.
This is a 3 BHK house plan in 1500 sq ft plot with two floors and a super built-up area of around 2300 sq ft.
From all the above examples, it can be concluded that the minimum area of a 3 BHK house is generally around 650 sq ft. 3 BHK house plan areas can also have very wide ranging figures. Explore more 3 BHK house plans by Brick & Bolt and discover the creativity and efficiency which have shaped the company’s dominant reputation in the construction industry.
How Much Does it Cost to Build a 3BHK House?
Construction costs can widely be divided into three ranges:
- Basic Construction
This includes:
- RCC of M20/ M25 grade for structural elements like foundation, beams, columns and slabs
- 4” or 6” concrete blocks for the construction of walls
- Affordable tiles for flooring and bathroom walls (₹40-60 per sq ft)
- Flush doors and aluminium windows
- Good quality sanitary and plumbing fittings (around ₹30 per sq ft)
- Average or Affordable Construction
This includes:
- RCC of M20/ M25 grade for structural elements like foundation, beams, columns and slabs
- 4”, 6” or 8” concrete blocks for the construction of walls as required
- Tiles for flooring and bathroom walls (₹60-100 per sq ft)
- Locally available wooden doors and UPVC windows
- Good quality branded sanitary and plumbing fittings (around ₹50 per sq ft)
- Premium or Luxury Construction
This includes:
- RCC of M20/ M25 grade for structural elements like foundation, beams, columns and slabs
- 4”, 6” or 8” concrete blocks for the construction of walls as required
- Premium quality tiles or natural stones for flooring and bathroom walls (₹100-150 per sq ft)
- Premium wooden (such as Teak) doors and windows
- High-quality branded sanitary and plumbing fittings (₹80-100 per sq ft)
For detailed insights into 3 BHK elevation design, check out our comprehensive guide.
Based on the above-mentioned three criteria, the cost of construction per sq ft for a 3 BHK house can be calculated as follows for example number 1 represented in the above section and other similar simple plans:
| Built-up area of 3 BHK house | Basic construction (in INR@₹1800/ sq ft) | Average construction(in INR@₹2500/ sq ft) | Luxury construction (in INR @₹3500/ sq ft) |
| 700 sq ft | 12,60,000 | 17,50,000 | 24,50,000 |
| 1000 sq ft | 18,00,000 | 25,00,000 | 35,00,000 |
| 1500 sq ft | 27,00,000 | 37,50,000 | 52,50,000 |
| 2400 sq ft | 43,20,000 | 60,00,000 | 84,00,000 |
3 BHK duplex house construction cost (the house as represented in example number 2 above) can be calculated as:
| Basic construction (INR) | Average construction(INR) | Luxury construction (INR) | |
| Construction cost for enclosed spaces (770 sq ft) | 13,86,000(@₹1800/ sq ft) | 19,25,000(@₹2500/ sq ft) | 26,95,000(@₹3500/ sq ft) |
| Construction cost for semi-enclosed spaces (260 sq ft) | 2,86,000(@₹1100/ sq ft) | 3,90,000(@₹1500/ sq ft) | 5,20,000(@₹2000/ sq ft) |
| Total construction cost | 16,72,000 | 23,15,000 | 32,15,000 |
The costs mentioned above are suggestive and may differ widely based on numerous project-specific factors like location, architectural design, climatic conditions and local geography. To get accurate construction cost estimates on the basis of individual project requirements, use Brick & Bolt’s free house building cost calculator.
Getting the Best House Construction Cost
Brick & Bolt is a leading construction company in India which offers a combination of low construction cost per square foot and high quality projects. With over 7000 completed homes and assured safe money transactions, the company has a proven track record in the building industry. For constructing 3 BHK houses with fully optimised designs, low project cost and premium quality, contact Brick & Bolt today and begin the journey of building your dream home!
Hemali Patel 
Apoorva H P Achar