Kolkata Setback Rules
Kolkata Municipal Corporation (KMC) · Kolkata Metropolitan Development Authority (KMDA)
The KMC Building Rules 2009 is the operative bye-law governing setbacks, building height, and FSI for plots in Kolkata under KMC / KMDA jurisdiction (Category Residential (KMC jurisdiction)). Front-side margin is driven by abutting road width; side and rear margins for single-family dwellings depend on plot size; for apartments and other uses the side and rear margins scale with building height. Use the calculator below for a quick lookup, or scroll to the full tables.
Front Setback (Road-side Margin)
| Building height | Front setback |
|---|---|
| ≤ 7.0 m | 1.2 m |
| > 7.0 & ≤ 10.0 m | 1.2 m |
| > 10.0 & ≤ 12.5 m | 1.2 m |
| > 12.5 & ≤ 15.5 m | 2 m |
| > 15.5 & ≤ 20.0 m | 3.5 m |
| > 20.0 & ≤ 25.5 m | 5 m |
| > 25.5 & ≤ 40.0 m | 6 m |
| > 40.0 & ≤ 60.0 m | 8 m |
| > 60.0 & ≤ 80.0 m | 10 m |
| > 80.0 m | 12 m |
- KMC setbacks are HEIGHT-driven (Rule 62) — enter your proposed building height in the calculator. There is no plot-size front-setback table.
- FAR is governed by the width of the means of access (Rule 70, Table 3); residential FAR is typically up to ~2.25 on wider roads.
- A means of access must be at least 2.4 m wide; greater widths are needed for taller buildings and unlock higher FAR.
Side & Rear Setback — Apartments & Other Buildings
| Building height | Rear margin | Side margin | Notes |
|---|---|---|---|
| ≤ 7.0 m | 2 m | 1.2 m | Front 1.2 m, side-1 1.2 m, side-2 1.2 m, rear 2.0 m. |
| > 7.0 & ≤ 10.0 m | 3 m | 1.2 m | Front 1.2 m, sides 1.2 m, rear 3.0 m. |
| > 10.0 & ≤ 12.5 m | 3 m | 1.2 m | Front 1.2 m, side-1 1.2 m, side-2 1.5 m, rear 3.0 m. |
| > 12.5 & ≤ 15.5 m | 4 m | 1.5 m | Front 2.0 m, side-1 1.5 m, side-2 2.5 m, rear 4.0 m. |
| > 15.5 & ≤ 20.0 m | 5 m | 4 m | Front 3.5 m, sides 4.0 m, rear 5.0 m. |
| > 20.0 & ≤ 25.5 m | 6.5 m | 5 m | Front 5.0 m, sides 5.0 m, rear 6.5 m. |
| > 25.5 & ≤ 40.0 m | 8.5 m | 6.5 m | Front 6.0 m, sides 6.5 m, rear 8.5 m. |
| > 40.0 & ≤ 60.0 m | 10 m | 8 m | Front 8.0 m, sides 8.0 m, rear 10.0 m. |
| > 60.0 & ≤ 80.0 m | 12 m | 11 m | Front 10.0 m, sides = 15% of height or 11.0 m (whichever is less), rear 12.0 m. |
| > 80.0 m | 14 m | 14 m | Front 12.0 m, sides = 15% of height or 14.0 m (whichever is less), rear 14.0 m. |
- Side-1 and side-2 can differ at low heights (e.g. 1.2 m and 1.5 m up to 12.5 m); the calculator shows the smaller mandatory side — check both columns in the table.
- Row-housing has only front and rear open spaces (no side), with an interior open space for light and ventilation.
Maximum Building Height
| Road width | Max height | Notes |
|---|---|---|
| < 3.5 m | 12.5 m | Narrow access — low FAR (~1.5) and limited height; ≤12.5 m typical. |
| 3.5 – < 7.0 m | 15.5 m | FAR rises with access width. |
| 7.0 – < 12.0 m | 20 m | — |
| ≥ 12.0 m | 40 m | Wider access permits high-rise; height then governed by Rule 62 open spaces + fire/airport NOC. |
- KMC does not cap height by road width directly — FAR does. The figures here are indicative ceilings; the binding constraint is FAR (Table 3) and the Rule-62 open spaces.
- High-rise (> 14.5 m) buildings need fire-service clearance and a minimum means-of-access width.
Worked Examples
Key Definitions
Kolkata Setback & Bye-law Reference Guide
What governs setbacks in Kolkata?
Building setbacks in Kolkata are regulated by the Kolkata Municipal Corporation Building Rules, 2009 (KMC Building Rules 2009), notified by the Kolkata Municipal Corporation (Govt. of West Bengal) on 2009-09-09. The regulation applies across all Category Residential (KMC jurisdiction) areas — meaning both the Kolkata Municipal Corporation (KMC) city limits and the broader Kolkata Metropolitan Development Authority (KMDA) jurisdiction. Three structural factors determine your minimum setbacks: abutting road width (controls front margin and max height), plot size (controls side/rear for single-family), and building height (controls side/rear for apartments).
Front setback — driven by road width
The front (road-side) margin under KMC Building Rules 2009 starts at 2.5 m for roads up to 9 m wide and scales up to 9.0 m for roads 45 m and wider. For most residential plots in Kolkata on a typical 30-40 ft (9-12 m) road, the front setback is 2.5 to 3.0 m. Corner plots must observe the road-side margin on every abutting road, which can significantly reduce buildable area on tight plots. Special buildings — high-rises above 25 m, hospitals, hotels, malls, educational institutions — must keep a uniform 12.0 m road-side margin regardless of road width.
Side and rear margins — driven by plot size for residences
For single-family and two-family dwellings (DW1 and DW2 in KMC Building Rules 2009 terminology), side and rear margins are determined by plot area. Tiny plots up to 25 sq.m are exempt (with G+1 cap). Plots between 25 and 150 sq.m need only 1.0-1.5 m on any one side. Once plot size crosses 150 sq.m, a mandatory 2.0 m rear margin kicks in. Plots above 500 sq.m must keep 3.0 m on both sides plus 3.0 m rear. This graduated structure gives smaller, dense urban plots more buildable area while ensuring breathing room in larger plots.
Apartments and commercial — driven by building height
Multi-family, mixed-use, and commercial buildings (anything other than DW1-DW2 and industrial) follow a different logic: the taller the building, the larger the side and rear margins. A low-rise apartment up to 16.5 m needs 3.0 m on every side. Buildings between 16.5 and 25 m need 4.0 m. Buildings between 25 and 45 m need 6.0 m. Anything above 45 m needs 8.0 m. This scaling protects fire access and inter-building daylight as buildings get taller.
Margin between buildings on the same plot
Group housing schemes and multi-block developments must observe an internal margin between buildings as well, separate from plot boundaries. Per Table 6.25, this ranges from 4.5 m for buildings up to 16.5 m, to 12.0 m between buildings of 70 m. Margin from a designated common plot (open recreation area within a layout) is 3.0 m for buildings up to 25 m, and 6.0 m above that. These rules are critical at the master-plan stage; missing them means redesigning blocks late in DA approval.
Coverage of overlays and special zones
The setback tables on this page cover the standard Category Residential (KMC jurisdiction) rules. Kolkata additionally has overlay zones with their own special regulations: the Sabarmati Riverfront Development zone, GAMTAL (urbanised village) areas, Core Walled City (heritage), Smart City Node (SPD5), Knowledge Precinct, and Closed Textile Mills Zone (CZ). Plots within these overlays follow the standard setback rules plus the overlay-specific provisions in Sections 7.2-7.6 and 8.1-8.4 of KMC Building Rules 2009. If your plot is in any of these zones, consult the full KMC Building Rules 2009 PDF (download link at the top of this page) before designing.
Frequently asked questions
What is the minimum front setback for a residential plot in Kolkata?
Per KMC Building Rules 2009 Table 6.24, the minimum road-side margin (front setback) for Category D1 plots in Kolkata ranges from 2.5 m on roads up to 9 m wide, to 9.0 m on roads of 45 m or more. For a typical 30 ft (≈9 m) wide road, the front setback is 2.5 m; for a 40 ft (≈12 m) road it's 3.0 m; for an 18 m road it jumps to 6.0 m.
What is the side and rear setback for a 200 sq.m plot in Kolkata?
For a single-family dwelling on a plot between 150 and 300 sq.m, KMC Building Rules 2009 requires a rear margin of 2.0 m and a side margin of 1.5 m on any one side. The other side may abut the boundary. This is per Table 6.26 of the regulation.
What is the maximum building height allowed in Kolkata?
Maximum building height under KMC Building Rules 2009 is governed by the abutting road width (Table 6.23). On roads less than 9 m wide, height is capped at 10 m (12 m for DW1/DW2 type residential). On 9-12 m roads it goes up to 16.5 m, on 12-18 m roads up to 30 m, and on 18 m and wider roads up to 45 m. In High Density Development Areas (where permitted FSI exceeds 3.5) on 18 m+ roads, height up to 70 m is allowed within 200 m of the road.
Are setback rules different for apartments vs single-family homes in Kolkata?
Yes. Single-family dwellings (Dwelling 1 and Dwelling 2 in KMC Building Rules 2009) have setbacks driven by plot size (Table 6.26). Apartments and other multi-family or commercial buildings have setbacks driven by building height — 3.0 m for buildings up to 16.5 m, 4.0 m for 16.5-25 m, 6.0 m for 25-45 m, and 8.0 m for buildings above 45 m. Front (road-side) margins follow the same Table 6.24 for both categories.
How do I calculate setbacks for my plot in Kolkata?
Use three inputs: (1) plot size in square metres, (2) abutting road width in metres, and (3) intended use (single-family, apartment, commercial). The lookup tables on this page give exact values per KMC Building Rules 2009. For corner plots, road-side margin applies on every abutting side. The setback calculator at the top of this page returns front, side, rear, and max height in one click.
Where can I download the official KMC Building Rules 2009 document?
The official Kolkata Municipal Corporation Building Rules, 2009 PDF is published by the Kolkata Municipal Corporation (Govt. of West Bengal) and hosted on kmcgov.in (KMC Building Rules 2009). Use the "Download PDF" button at the top of this page for direct access. The regulation is approximately 600 pages; setbacks are covered in Section 6.7 (Margins) and Tables 6.23 through 6.41.
Do these rules apply to plots in AUDA areas outside the AMC limit?
Yes — KMC Building Rules 2009 is a state-level regulation that applies uniformly across Category D1 plots, which covers both AMC (city corporation) and AUDA (urban development authority) jurisdictions. The same Tables 6.24 and 6.26 govern setbacks. Gandhinagar Municipal Corporation (GMC) plots fall under separate tables (6.28 onwards) due to its planned-grid layout. Special zones (Riverfront, Heritage Core, GAMTAL, Smart City Node) have their own overlay rules in addition to base setbacks.
What happens if my plot doesn't meet the minimum setback?
Existing buildings in revenue records before the publication of KMC Building Rules 2009 are typically protected by transitional provisions. New construction or major alteration must comply with current setbacks. For sub-25 sq.m plots, only G+1 construction is permitted with no mandatory setback. For plots affected by road widening, owners can claim FSI compensation against the original boundary (Section 6.3.3) provided the surrendered land is formally transferred. Always consult a licensed architect for plot-specific guidance.
Kolkata follows the Kolkata Municipal Corporation Building Rules, 2009 (KMC Gazette, 9 Sept 2009). KMC's model is HEIGHT-DRIVEN: front, side and rear open spaces increase with building height (Rule 62). FAR is governed separately by the width of the means of access / abutting road (Rule 70, Table 3). KMDA-area and bustee/heritage zones may carry separate norms.