A 1 BHK (1 bedroom, hall and kitchen) house is generally simple and quick to construct at lower prices for landowners, while being affordable for renters like students, bachelors and young couples. The demand for such houses is therefore rapidly increasing, particularly in urban centres. However, small house construction can be an intimidating task with thousands of builders and contractors present in cities, each quoting a different rate and construction cost per square feet. The generally tight budgets and small plot sizes further make this process cumbersome. This blog therefore provides a comprehensive guide on the building construction cost for a 1 BHK house, focusing on calculating the 1 BHK square feet areas and rates for different types of construction. Read on to learn more.
Factors That Affect the Cost of Building Single Bedroom Homes
1 BHK house construction cost is affected by several factors, some of which are:
- Built-up Area: House construction cost is generally calculated on the basis of super built-up area. This includes the carpet area and built-up area of a house, along with external spaces like parking garages, storage spaces, lifts and staircases. The super built-up area of a 1 BHK house can begin at 300 sq ft and even go up to 1500 sq ft, depending on the affordability/ luxury levels of the dwelling.
- Design Complexity: Architectural design has a major impact on small house construction costs. While the use of affordable materials and minimalist design can reduce costs, complicated design features (such as skylights, double-heights and transformative room designs) and innovative material usage can drastically increase it. The inclusion of such architectural features may even mean that a 1 BHK plan in 400 sq ft costs more to build than a 700 sq ft 1 BHK house.
- Site Topography: Construction in rocky areas or sites with weak soil requires special foundation designs, while steeply sloping sites need levelling or filling before building, both of which can substantially increase the 1 BHK building cost.
Calculating a 1 BHK Area in Square Feet
The area of a 1 BHK house can vary greatly, depending on the architectural design and individual preferences. The minimum sizes and areas for spaces in a 1 BHK house are generally:
- Bedroom: 10’0” x 10’0”= 100 sq ft
- Hall/ Living room: 10’0” x 10’0”= 100 sq ft
- Bathroom: 4’0” x 7’0”= 28 sq ft
- Kitchen: 6’0 x 8’0”= 48 sq ft
Total carpet area= 276 sq ft
- Area of walls in plan (considering it to be a minimum of 10% of the total carpet area)= 28 sq ft
Total built-up area= 304 sq ft
Therefore, the minimum built-up area of a 1 BHK house with comfortable and practical room sizes can be assumed to be 300 sq ft. Various other spaces, such as common staircases, parking areas, lifts, corridors, utilities and storage rooms can be included in a 1 BHK house. Each of the above-mentioned room sizes can also be made larger as required, adding to the total built-up area as well as the overall construction cost of the house. The average area of a regular 1 BHK house is generally around 450 sq ft. The area of more luxurious 1 BHK houses can even go up to 1500 sq ft, with a corresponding increase in construction cost.
An average-sized 1 BHK house floor plan
To explore a wide range of efficient, functional and aesthetic floor plans of all sizes, visit Brick & Bolt’s floor plans webpage.
Estimating 1 BHK Construction Cost
Construction costs can widely be divided into three ranges:
- Basic construction, which 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, which 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, including:
- 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)
Based on these criteria, the cost of construction per sq ft for a 1 BHK house can be categorised and calculated as follows:
| Built-up area of 1 BHK house | Basic construction (in INR@₹1800/ sq ft) | Average construction(in INR@₹2500/ sq ft) | Luxury construction (in INR @₹3500/ sq ft) |
| 300 sq ft | 5,40,000 | 7,50,000 | 10,50,000 |
| 450 sq ft | 8,10,000 | 11,25,000 | 15,75,000 |
| 600 sq ft | 10,80,000 | 15,00,000 | 21,00,000 |
| 1000 sq ft | 18,00,000 | 25,00,000 | 35,00,000 |
The costs of construction per square foot mentioned above generally do not include pre-construction processes like architectural and structural design charges, site survey and soil testing. These may further cost anywhere between ₹50 to ₹500 per sq ft or even be charged on a lump sum basis, depending on the agencies chosen. For more detailed guidelines, check out Brick & Bolt’s blog on how construction cost is calculated in India.
All the values mentioned above are only indicative and can vary significantly based on several factors like site topography and location, design elements incorporated and individual floor plans. For obtaining accurate estimates for construction in your city and with your specific requirements, use Brick & Bolt’s house construction cost calculator. This free calculator provides precise and instant cost predictions with customisable inputs. With different construction packages and their project inclusions generated within seconds, this home building cost calculator is a representation of the efficiency of Brick & Bolt – India’s leading construction company.
Selecting Builders With the Lowest Construction Cost Per Square Feet
While looking for contractors who offer the lowest rates of construction, the quality of buildings often gets compromised. Low-grade materials are commonly utilised to ensure project completion at a lower price. However, Brick & Bolt is a premium construction company in India, providing the dual assurance of low prices and supreme quality required for 1 BHK house construction. With 7000+ completed homes and 470+ quality tests (QASCON) conducted for every project, the company is a proven leader in the construction industry. For a free consultation to begin the journey of your dream home with our experts, contact Brick & Bolt today!