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Understanding the CMDA Approval Process for Construction in Chennai
What is CMDA Approval?
The Chennai Metropolitan Development Authority (CMDA) oversees the approval process for any construction or land development in Chennai. Whether you’re building a residential complex, commercial building, or industrial structure, obtaining CMDA approval is essential to ensure compliance with local building laws.
The Procedure to Obtain CMDA Approval
 The process begins by categorizing your project. If you’re laying out landforms, you’ll need to apply under Form “A”. For constructions like special buildings or industries, you’ll need to submit Forms “B” and “C”, respectively.
Once your application is categorized, you must submit detailed architectural drawings in line with CMDA’s rules and regulations. These documents include:
- Detailed Site Plan
- Key Plan
- Floor Plans
- Elevations and Sections
These drawings must be attested by an architect or surveyor registered in Chennai. Along with the plans, you’ll need to submit documents such as the Sale or Lease Deed and any relevant clearance certificates.
Timeline and Validity of Approval
The typical approval time from CMDA is around 45 days from the date of submission. Once approval is granted, construction must begin within 3 years. If no construction is undertaken within this time, the approval will expire, and the process must be repeated.
Consequences of Unauthorized Construction
 Constructing a building without proper CMDA approval is considered unauthorized and can result in demolition under the relevant building bylaws. Ensuring that all required approvals are obtained before commencing construction is crucial to avoid legal issues.
Special Considerations for Multi-Story Buildings
For buildings with more than four floors (G+3), such as special or multi-story buildings, you can directly apply for CMDA approval. For other buildings, approvals may be issued by local authorities such as the Chennai City Municipal Corporation or the Panchayat.
Final Steps and Payment
 Once your CMDA application is approved, a demand for payment will be sent to you by the local authority or CMDA. The payment amount is based on factors like land use and the size of the area. Following payment, government officials will conduct an inspection to ensure compliance.
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