Inputs

Mode

forward

Location

Kolkata

Property type

independent_house

Built-up area

1,500 sq ft

Floors

2

Quality

standard

Contingency

10%

Breakdown

Cement

₹2,13,360 (7.3%)

Steel

₹3,20,040 (10.9%)

Sand

₹1,33,350 (4.5%)

Aggregate

₹1,33,350 (4.5%)

Bricks / blocks

₹1,86,690 (6.4%)

Flooring

₹2,13,360 (7.3%)

Paint

₹1,06,680 (3.6%)

Electrical

₹1,60,020 (5.5%)

Plumbing

₹1,33,350 (4.5%)

Doors / windows

₹1,60,020 (5.5%)

Labour

₹5,86,740 (20%)

Professional fees

₹1,06,680 (3.6%)

Other

₹2,13,360 (7.3%)

Contingency

₹2,66,700 (9.1%)

Assumptions

• Base rate ₹1800/sqft (national indicative) for Kolkata.
• Quality multiplier ×1 (standard) maps to STANDARD specifications for detailed BOQ — the ₹/sq ft total remains a quick estimate.
• Floor multiplier ×1.04 for 2 floor(s).
• Location multiplier ×0.95.
• Cost split material 52% / labour 32% / misc 16%.
• Market rates in model: steel ₹55/kg, cement ₹380/bag, labour index 100.
• Contingency 10% on subtotal.
• Category and phase shares are planning allocations, not contractor bills.
• Always verify rates with local contractors and suppliers before budgeting.
• Verify locally with suppliers or contractors before budgeting. These are not live market prices.

Methodology

total ≈ (area_sqft × cost_per_sqft + features) × (1 + contingency%)

1. Start from base location rate (₹1800/sqft) for Kolkata.
2. Apply quality multiplier (standard: ×1) and attach STANDARD specification mapping (not a substitute for a detailed BOQ).
3. Apply floor multiplier (×1.04).
4. Foundation type left at default (×1.0).
5. Structure type left at default (×1.0).
6. Add optional features (0 item(s), ₹0).
7. Split into material / labour / miscellaneous using configured percentages.
8. Adjust for steel / cement / labour rate overrides vs market defaults when provided.
9. Add contingency (10%).
10. Publish a likely range of ±12% around the mid estimate.