Get a rough estimate of your total building construction cost from the built-up area and a per-square-foot construction rate, with optional interior and other costs.
How to Use the Construction Cost Calculator
Enter your total "Built-Up Area (sq.ft)", including all floors.
Enter your "Construction Rate (₹ per sq.ft)" - get this from a local contractor or builder quote, since it varies widely by city and quality of finish.
Optionally add an "Interior/Finishing Rate" and any "Other Lumpsum Costs" (compound wall, gate, landscaping, etc.).
Click "Calculate Cost" to see your base, additional, and total estimated construction cost.
How the Estimate Is Built Up
Base cost = Built-up area × Construction rate per sq ft.
Additional cost = Built-up area × Interior rate per sq ft + Other lumpsum costs.
Total = Base cost + Additional cost.
The interior rate is applied to the full built-up area, so use a rate that is averaged over the whole house rather than the price of one fitted kitchen. Items that do not scale with area, such as a compound wall, gate, sump or borewell, belong in the lumpsum field.
Worked Example
A G+1 house with 750 sq ft on each floor has a built-up area of 1,500 sq ft. Suppose a contractor quotes ₹2,000 per sq ft for the structure and standard finishes, you allow ₹500 per sq ft for interiors, and you add ₹3,00,000 for a compound wall, gate and sump. Base cost = 1,500 × 2,000 = ₹30,00,000. Additional cost = 1,500 × 500 + 3,00,000 = ₹10,50,000. Total = ₹40,50,000, or ₹40.5 lakh.
The rates here are only to illustrate the arithmetic. Actual rates differ a great deal between cities, between a basic and a premium specification, and from year to year as cement, steel and labour prices move, so take current quotes from two or three local contractors.
Measuring Built-up Area Correctly
Contractors price on built-up area: the floor area measured over the outer face of the external walls, added up for every floor. Include the staircase, covered balconies and the headroom (mumty) over the stairs if the contractor counts them, and ask how open terraces, sit-outs and the parking floor are charged, since these are often billed at a lower rate. A mismatch in how area is measured is one of the most common reasons two quotes cannot be compared directly.
Costs a Per-sq ft Rate Often Leaves Out
Plan approval and municipal fees, architect and structural engineer fees, and soil testing.
Electricity, water and sewer connection charges, and the temporary power and water used during construction.
Borewell, sump, overhead tank, septic tank or rainwater harvesting, depending on the site.
Extra foundation work for poor soil, a sloping plot or a high water table.
GST and other taxes, if the quote is not stated as inclusive.
Interiors such as modular kitchen, wardrobes, false ceiling, lights and fans, and appliances.
Planning the Budget
Add a contingency of around 5–10% for price rises and changes made during construction. Few houses finish exactly at the first estimate.
Ask for a specification sheet with the quote: the brand and grade of cement and steel, the tile rate per sq ft, the make of sanitaryware, and the number of electrical points. A lower rate often means a lower specification.
If you are taking a home loan for construction, banks usually release money in stages linked to progress, so plan for the stages where you will need your own contribution.
Frequently Asked Questions
Construction rates vary hugely by city, material quality, labor costs, and current market prices, so a single default rate would be misleading. Get a rate quote from a local contractor or architect for an accurate estimate.
It usually covers the structural shell - foundation, RCC framework, brickwork, plastering, flooring, plumbing, and electrical - but often excludes interior finishing like modular kitchens, wardrobes, and premium fittings, which is why a separate "Interior/Finishing Rate" field is provided.
This is a rough, illustrative estimate based on a simple area × rate calculation. Actual costs depend on site conditions, design complexity, material choices, and market fluctuations - always get a detailed quotation from a contractor before budgeting.
Construction contractors almost always charge on built-up area, which includes the walls and is measured over every floor. Confirm this in writing, along with how balconies, terraces and parking areas are counted.