Flat Price per Sq Ft Calculator – True Rate on Carpet Area

How to use

Enter the size the developer quotes (saleable sq ft).

Choose whether you know the rate per sq ft or the total price, and enter it.

Enter the common-space share from the agreement or the developer.

Optionally add parking, a registration % and utility charges.

To compare, fill in the second flat's size, rate and common space.

Formula

To find	Formula	Example
Total price	size × rate	1,250 × 8,000 = 1,00,00,000
Rate per sq ft	total ÷ size	90,00,000 ÷ 1,200 = 7,500
Carpet area	size × (1 − common %)	1,250 × 0.75 = 937.5
Rate on carpet	price ÷ carpet area	1,00,00,000 ÷ 937.5 = 10,667
Registration	(price + parking) × registration %	—
All-in rate	(price + parking + registration + utility) ÷ size	—

Examples

Rate only: 1,250 sq ft at Tk 8,000 with 25% common space. Price Tk 1 crore; usable area 937.5 sq ft, so the true rate is Tk 10,667 per sq ft.

All-in: the same flat plus Tk 5 lakh parking, an assumed 10% registration and Tk 1.5 lakh utilities. Registration = 1,05,00,000 × 10% = 10,50,000. Total Tk 1,17,00,000: Tk 9,360 per saleable sq ft and Tk 12,480 per carpet sq ft.

Comparing two flats: Flat A is 1,250 sq ft at Tk 8,000 with 25% common space (Tk 10,667 on carpet). Flat B is 1,100 sq ft at Tk 8,500 with 15% common space: 935 sq ft carpet at Tk 10,000. Despite the higher quote, B is Tk 667 cheaper per usable sq ft.

What to know in Bangladesh

Developers usually quote the “saleable” size, which includes common space. Check whether the agreement also states the carpet or net area.
Car parking, gas/electricity/water connections, generator, service charge or a reserve fund are often charged on top of the rate. Match them against the payment schedule.
Registration involves stamp duty, a registration fee, local government tax and source tax, and the rates change by area and budget. This calculator assumes none; enter the rate you have been quoted. For a land estimate, see the land registration cost calculator.

More: why the quoted rate can mislead

Two projects can both say “Tk 8,000 per sq ft” and still give you different usable space. A bigger lobby, two lifts or a rooftop hall raise the common share, and that share is added to your size. Comparing on carpet area removes the difference.

Some people express common space as a share of the saleable size (“25% of 1,250”), others as “loading” on the carpet area (“33.3% on 937.5”). They describe the same thing on different bases. This calculator uses the first. To convert a loading figure: common % = loading ÷ (1 + loading).

Add parking, registration and utilities to see the all-in rate. If you are taking a bank loan, use the EMI calculator for the instalment.

Frequently asked questions

How is a flat's per-sq-ft price calculated?

Total price = saleable size × rate per sq ft, and rate = total ÷ size. Tk 90 lakh for 1,200 sq ft is Tk 7,500 per sq ft.

What is common space or loading?

Shared areas such as stairs, lifts, lobby, roof and wall thickness. Developers add your share of them to the flat's size, so you measure fewer sq ft inside.

How do I get the carpet area?

Carpet area = saleable size × (1 − common %). At 25% common space, 1,250 sq ft gives 937.5 usable sq ft.

How do I tell which of two flats is cheaper?

Compare the rate on carpet area, not the quoted rate. A flat quoted lower can cost more per usable sq ft if its common share is larger.

What registration percentage should I use?

No official rate is built in; you enter the %. Stamp duty, registration fee, local tax and source tax together vary by area and deed value, so check with the sub-registry office or a deed writer.

Is parking included in the per-sq-ft rate?

Usually not. Many projects sell a car space separately, so enter it on its own line to see the all-in cost per sq ft.