RAJUK FAR Calculator

A free, independent online calculator for Floor Area Ratio (FAR) in Dhaka and Bangladesh, based on the RAJUK Detailed Area Plan (DAP 2022–2035) and the Dhaka Building Construction Rules 2025 (Imarot Nirman Bidhimala). This is not an official RAJUK website or product. Enter your plot area, road width and occupancy to estimate the permissible floor area, Maximum Ground Coverage (MGC) and setbacks for residential, commercial and mixed-occupancy buildings.

What the calculator covers

• FAR and permissible floor area: base and bonus FAR from plot area, road width and occupancy type (residential A1–A6 and non-residential occupancies), following the DAP 2022–2035 density blocks.
• Maximum Ground Coverage (MGC): the maximum ground coverage percentage and the open-space and rainwater-recharge allowances for the plot.
• Setbacks: front, side and rear setbacks by building height, plot size and road width.
• Building and floor planning: floor count, unit layout, parking and lift estimates, and exportable calculation reports.
• Residential, commercial and mixed occupancy: single-occupancy projects and Residential + Commercial mixed-use projects.

Frequently asked questions

What is FAR in the RAJUK building rules?

Floor Area Ratio (FAR) is the ratio of total gross floor area to the plot area, so the total allowable floor area is FAR × plot area. The FAR that applies depends on the density block, occupancy and road width.

কত কাঠা জমিতে কত তলা করা যাবে?

The number of storeys depends on the allowable FAR, Maximum Ground Coverage, plot area and road width under the RAJUK DAP 2022–2035 provisions. Wider roads and larger plots generally allow more floor area.

Guides: FAR calculation · setback rules · maximum ground coverage · DAP density zones · FAQ