Check Coastal Regulation Zone Status in Chennai
Click on any location on the map to check if it falls within a Coastal Regulation Zone (CRZ). CRZ areas have specific environmental regulations to protect coastal ecosystems and communities.
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Understanding Coastal Regulation Zones (CRZ)
What is a Coastal Regulation Zone?
Coastal Regulation Zone (CRZ) refers to coastal land up to 500 meters from the High Tide Line (HTL) and land up to 50–100 meters along tidal-influenced water bodies. The CRZ framework aims to balance development and conservation, protecting ecologically sensitive coastal areas while supporting the livelihoods of traditional coastal communities.
CRZ Categories
As per the 2019 Notification by the Ministry of Environment, Forest and Climate Change, CRZ areas are classified into four main categories:
CRZ-I (Ecologically Sensitive Areas)
- CRZ-I A: Includes mangroves, coral reefs, mudflats, salt marshes, nesting grounds, marine parks, and other sensitive features.
- CRZ-I B: The intertidal zone between the High Tide Line (HTL) and Low Tide Line (LTL).
- Highly restrictive zone — new construction is generally prohibited except for public utilities and eco-tourism projects as per approved CZMPs.
CRZ-II (Developed Urban Areas)
- Built-up areas within municipal limits or legal urban zones with over 50% development.
- Construction is allowed on the landward side of existing roads/structures.
- Follows local FSI norms: 1.5 for normal buildings and 2.25 for Multi-Storeyed Buildings (MSB).
CRZ-III (Undeveloped/Rural Areas)
- Divided into:
- CRZ-III A: Densely populated rural areas (>2161 persons/km²); No Development Zone (NDZ) of 50 meters.
- CRZ-III B: Sparsely populated areas; NDZ of 200 meters from HTL.
- Limited development allowed beyond NDZ with certain conditions.
CRZ-IV (Water Areas)
- CRZ-IV A: Sea area from LTL up to 12 nautical miles.
- CRZ-IV B: Tidal water bodies like rivers, creeks, backwaters, and lagoons.
- Traditional fishing and regulated maritime activities allowed; discharge of untreated waste is prohibited.
Need Environmental Clearance?
Before undertaking any development within CRZ areas, it is mandatory to obtain environmental clearance. Our team assists you in complying with all CRZ norms efficiently.
- Verification of CRZ classification for your plot
- Documentation & compliance filing
- Expert consultation with coastal zone management experts
- Liaison support for faster approvals
General Guidelines
Key points to keep in mind regarding CRZ development:
- No Development Zones (NDZ): 50m for CRZ-III A and 200m for CRZ-III B
- Setbacks: Construction is allowed beyond NDZ only with proper permissions
- FSI Limits: 1.5 for normal buildings, 2.25 for Multi-Storeyed Buildings
- Pollution Control: No untreated sewage or effluent discharge allowed
- Fishing Rights: Rights of traditional communities are protected
- Restricted Activities: No sand mining, no flattening of dunes, no plastic disposal in sea
How to Use This Tool
Use our CRZ Check Tool to instantly identify the zone of any plot:
- Open the map interface
- Search for a location or click directly on the map
- Check the CRZ classification and buffer zone
- View development guidelines specific to that category
- Use the location tool to check your current GPS position
Disclaimer
This CRZ information is provided for general reference only. Official approvals depend on verified government maps and ground surveys. Always consult your regional Coastal Zone Management Authority before initiating construction.
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