Choosing between a 2BHK and 3BHK plan is one of the first steps in home building. The right choice depends on family size, budget, and plot dimensions. This guide shows the size ranges, cost in 2025, and which plan suits different needs.
Typical size range
- 2BHK: 900–1,200 sq ft
- 3BHK: 1,200–1,800 sq ft
A 2BHK usually has two bedrooms, one hall, and one kitchen. A 3BHK adds an extra bedroom and often a larger living or dining space.
Construction cost in 2025
The per sq ft rate varies by city and finish level. Below are average totals for standard finish homes.
| Size | Bangalore | Patna | Lucknow |
|---|---|---|---|
| 2BHK (1,000 sq ft) | ₹24 lakh | ₹19 lakh | ₹20 lakh |
| 3BHK (1,500 sq ft) | ₹36 lakh | ₹28.5 lakh | ₹30 lakh |
| 3BHK (1,800 sq ft) | ₹43.2 lakh | ₹34.2 lakh | ₹36 lakh |
These numbers use mid-range 2025 rates: Bangalore ₹2,400, Patna ₹1,900, Lucknow ₹2,000 per sq ft.
Who should pick a 2BHK
- Young couples or small families
- Budget under ₹25 lakh in Patna or Lucknow, or ₹30 lakh in Bangalore
- Compact plots under 1,000 sq ft
- Investment homes or rental units
Who should pick a 3BHK
- Families with two or more children
- Parents planning to live with them
- Plots above 1,200 sq ft
- Budget above ₹30 lakh
A 3BHK adds flexibility. One room can work as a study or guest space.
Vastu in 2BHK vs 3BHK
In both, bedrooms are placed in the south-west or south. Kitchens often sit in the south-east. Living rooms face east or north. More rooms in a 3BHK give extra scope to align with vastu without major structural change.Learn more
Plot size planning
- 30×40 ft (1,200 sq ft): Can fit a 2BHK comfortably, or a compact 3BHK
- 40×60 ft (2,400 sq ft): Enough for a full 3BHK with parking and open space
Build timeline
- 2BHK (single floor): 8–10 months
- 3BHK (G+1 or more): 12–14 months
Locking the design early helps both stay within timeline.
Budget tips
- Fix scope in advance
- Choose standard tiles and fittings
- Add interiors later if needed
- Plan storage within walls to save space
FAQs
Which is better: 2BHK or 3BHK in 2025?
A 2BHK suits smaller families and tighter budgets. A 3BHK is better for larger families or those planning for the future.
How much more does a 3BHK cost compared to a 2BHK?
At 2025 rates, a 3BHK (1,500 sq ft) costs ₹10–12 lakh more than a 2BHK (1,000 sq ft).
Can I convert a 2BHK into a 3BHK later?
Yes, if the plot and structure allow. It is cheaper to plan for a 3BHK now than to add later.
Does vastu affect cost in 2BHK or 3BHK?
No extra cost if planned early. Major structural shifts can add to the budget.
What plot size is needed for a 3BHK?
At least 1,200 sq ft plot is needed for a comfortable 3BHK. A 40×60 ft plot is ideal.
Which is better for rental income?
2BHK homes are easier to rent out in most cities. 3BHK fetch higher rent but take longer to find tenants.