Planning Board Liaison

CMDA & DTCP Plan Sanctions

Directorate of Town & Country Planning (DTCP) approvals, CMDA planning permits, land conversion (CLU), and local body layout sanctions.

1. What is an Industrial Building Sanction?

Before breaking ground on any industrial project, companies must obtain formal blueprint approvals for their structural layouts. In Tamil Nadu, this is governed by the Chennai Metropolitan Development Authority (CMDA) for the Chennai metropolitan area, and the Directorate of Town & Country Planning (DTCP) for regions outside Chennai. In Andhra Pradesh, it is managed by the Andhra Pradesh Industrial Infrastructure Corporation (APIIC) or regional planning boards.

2. Who Needs It & Zoning Codes?

Mandatory for all factory buildings, warehouses, infrastructure sheds, and administrative blocks. Layout designs must strictly match designated "Industrial Land Use" zoning codes. If land is classified as agricultural (patta land), a formal Change of Land Use (CLU) or land conversion must be secured first.

3. Applicable Regulations

- Tamil Nadu Combined Development and Building Rules, 2019: The consolidated ruleset dictating floor space index (FSI), setback width, parking slot counts, and height restrictions.
- Andhra Pradesh Building Rules, 2017: Standard guidelines governing structural parameters, setback widths, and heights for APIIC estates.

4. The Application Liaison Process

1 Pre-verifying zoning maps and land classification

2 Procuring necessary NOCs (SPCB, Fire, NHAI/Highway access)

3 Submitting digital blueprint drawings on state Single-Window portals

4 Planning board technical review, site inspection, and permit release

5. Mandatory Document Dossier Checklist

Patta deeds / complete parent land documents

NOCs from SPCB, Fire Department, and DISH

Detailed site topography layout drawings (AutoCAD formats)

SIPCOT or APIIC land allotment letter copies

Structural design stability verification details

Rainwater harvesting and STP detailed drawings

6. Timeline and Cost Parameters

- Standard DTCP/CMDA Clearance: 60 to 90 Days.
- Change of Land Use (CLU): 45-60 Days (if agrarian patta).
- Government Fees: Calculated based on total built-up area and developmental zoning charges.

7. Major Violational Rejection Mistakes

🔴 FSI violations: Exceeding the permitted Floor Space Index (FSI) for the designated land layout scale.

🔴 Building prior to sanction: Launching civil column construction before receiving the formal planning permit.

🔴 Buffer zone encroachments: Placing heavy generator yards or electrical rooms within SPCB-mandated buffer setback boundaries.

8. Frequently Asked Questions

What is a local body layout sanction? ▸

After securing DTCP planning approval, the files are forwarded to the local body (panchayat or municipality). They verify infrastructure charges, calculate local body taxes, and issue the final permission to commence construction.