RAJUK FAR Calculator for Dhaka — Now Free to Use on Our Website

Jewel Barua
3 hours ago
4 min read

Studio 16 Architects | Architecture · Simplicity · Diversity

If you have ever sat across from a RAJUK officer wondering how many floors you can build, how many apartments you can get, or why your neighbour's building looks taller than yours on the same size plot — you are not alone. Floor Area Ratio, or FAR, is the single most important number in Dhaka building planning. And for most landowners, developers, and even architects, calculating it correctly has always required hours of cross-referencing multiple legal documents.

We just changed that.

Find out your plot FAR, Build Area, Number of unit, Number of Floor and size of floor in just one click. (Dhaka, Bangladesh)

Introducing the Studio 16 Free FAR Calculator

We have built and launched Bangladesh's first fully up-to-date online RAJUK FAR Calculator for Dhaka, and it is completely free to use. No login required. No forms to fill. Just your plot details — and you get a complete planning analysis in seconds.

Try it here → https://www.studio16architectsbd.com/rajuk-far-calculator

Or access it directly from our website at www.studio16architectsbd.com

RAJUK FAR Calculator :

What Does the Calculator Do?

This is not a simple rule-of-thumb tool. It applies every layer of Bangladesh building law in the correct legal hierarchy:

It calculates your:

Road FAR and Area FAR — and which governs your plot
Base FAR (unconditionally approvable — no conditions needed)
Maximum FAR (with incentives and conditions)
Approved FAR after all applicable incentive bonuses
Maximum Ground Coverage (MGC) — both minimum and maximum
Mandatory open space requirements
Total allowable dwelling units using the RAJUK density method
Number of floors — displayed as G+N (e.g. G+8 = 9-storied building)
Floor plate size at three coverage scenarios
Setback requirements on all four sides

All based on the latest codes:

Dhaka Imarat Nirman Bidhimala 2025 (SRO 469-Law/2025, gazetted 14 December 2025) — the new primary building code that replaces Bidhimala 2008
DAP 2022–2035 with both amendments — SRO 271/2023 and SRO 466/2025
Bangladesh Building Construction Act 1952
RAJUK Building Act 1996

Why This Matters — The Problem with FAR in Dhaka

Dhaka's building regulations are genuinely complex. The FAR for your plot is determined by two separate values — your Road FAR (based on the width of your access road) and your Area FAR (based on which of the 68 new density blocks your plot falls in). The lower of the two is your Base FAR. The higher is your Maximum FAR. Getting this wrong at the planning stage leads to approved designs being rejected, redesigns costing time and money, and in the worst cases, buildings being constructed illegally.

The December 2025 amendments made this even more critical. The DAP 2nd Amendment (SRO 466/2025) completely replaced the old ward-based Area FAR system with 68 new density blocks, changed the Maximum FAR formula, introduced a new tiered incentive FAR table, and updated the road width columns in the Road FAR table. Most FAR guides circulating online are already outdated.

Our calculator reflects every single one of these changes.

The Three Floor Analysis — A Tool for Real Decisions

One feature we are particularly proud of is the Three Coverage Scenario analysis. Once the calculator determines your approved FAR, it shows you what happens at three different ground coverage choices:

Minimum coverage — fewer floors, larger floor plates. Better for luxury apartments, corporate buildings, or designs that prioritise space and light.

Mid coverage — a balanced option that most apartment buildings in Dhaka use.

Maximum coverage — the most floors, smallest plates. Better for maximising the number of units and rental yield.

Each scenario shows you the exact number of floors in G+N format (where G is the ground floor for parking, and N is the number of FAR-included upper floors), the approximate building height, the floor plate area in both square feet and square metres, and the required setbacks.

This is the kind of analysis that previously required a full feasibility study from an architect. Now it takes ten seconds.

How to Use the Calculator — Step by Step

Step 1 — Select your building type. Choose from A1 (single family house) through to K3 (repair workshop) — all 15 occupancy categories from Bidhimala 2025 Table 5.

Step 2 — Select your location. Central Dhaka (DNCC/DSCC core), Outside Central (Narayanganj, Savar etc.), or Other Urban Areas.

Step 3 — Find your density block. Type your area name — Dhanmondi, Mirpur, Gulshan, Badda, Bashundhara, Savar, Narayanganj — and the calculator finds your block from all 68 blocks in DAP 2025 Appendix 3.6.

Step 4 — Enter your plot and road details. Land area in katha, square feet, or square metres. Access road width in feet.

Step 5 — Add incentives if applicable. Plot size bonus is calculated automatically. You can add green building certification, public open space surrender, or affordable housing incentives.

Step 6 — Calculate. The full analysis appears instantly — FAR chain, units, floor scenarios, ground coverage, setbacks, and legal references for every number.

Who Is This For?

Landowners planning to develop their property and wanting to understand their options before approaching a developer or architect.

Developers conducting initial feasibility studies on potential acquisitions.

Architects and engineers who want a quick cross-check against their own calculations before submitting to RAJUK.

Real estate investors evaluating plots and comparing development potential across different locations.

Law firms and consultants advising clients on RAJUK matters.

A Note on Accuracy

Every number in this calculator comes directly from the gazetted legal texts, read page by page. We have cross-checked all 68 density blocks, all 9 road width columns, the complete MGC Table 3, the Setback Table 1, and the Incentive FAR Table 3.28 against the original Bangladesh Gazette publications.

That said, this tool is a planning guide. Final approval always depends on RAJUK's review of your specific application, flood zone status, LUC conditions, and the DAP map. We always recommend confirming with a registered architect before submitting your planning permit application.

Which is exactly where we come in.