1. Understanding CMDA vs. DTCP Jurisdiction
In Tamil Nadu, building approval authority is strictly divided by geographic territory:
- CMDA (Chennai Metropolitan Development Authority): Governs the Chennai Metropolitan Area (CMA) encompassing Chennai City Corporation, Avadi, Tambaram, and suburban corridors along OMR, ECR, and GST Road.
- DTCP (Directorate of Town and Country Planning): Governs all areas outside CMDA, including Vellore Corporation, Katpadi, Sathuvachari, Ranipet, and developing rural panchayats.
2. Mandatory Document Checklist for Residential Approval
Before submitting your drawing through the Tamil Nadu Single Window Portal, ensure the following original legal titles and drawings are ready:
- Registered Sale Deed & Parent Deeds (30-year track record)
- Patta / Chitta in the present owner's name with revenue sketches
- Encumbrance Certificate (EC) for 30 years
- Property Tax & Vacant Land Tax (VLT) Receipts
- Registered Licensed Surveyor / Chartered Civil Engineer CAD Drawings (Site plan, key plan, floor plans, sections, elevations)
- Soil Test Geotechnical Report (For structures exceeding G+2 floors)
3. Key FSI & Setback Regulations (TNCDBR 2019 / 2026 Rules)
Under the Tamil Nadu Combined Development and Building Rules (TNCDBR), residential individual houses and villas must maintain strict setbacks:
4. How Silux Construction Handles 100% of Your Approvals
As turnkey builders in Chennai and Vellore, Silux Construction handles the entire sanction process on your behalf. Our in-house chartered structural engineers prepare certified structural drawings, submit them to the Single Window Portal, coordinate physical site inspections with municipal engineers, and secure your approved sanction order within 30 to 45 working days.
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