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• Real estate developers have urged the Tamil Nadu government to review planning restrictions imposed around the Pallikaranai Marsh after its designation as a Ramsar wetland.
• CREDAI Chennai has called for a scientific delineation of the marsh's influence zone, arguing that the current planning freeze has affected over one lakh patta landowners and stalled development across parts of South Chennai.
• The industry body estimates the restrictions could delay economic activity worth around INR 72,000 crore while impacting housing, infrastructure and employment.
• It has sought a balanced approach that protects the ecologically sensitive wetland without unnecessarily restricting legally owned private land.
The real estate industry in Chennai has renewed its appeal to the Tamil Nadu government to reassess planning restrictions imposed around the Pallikaranai Marsh, arguing that the current framework has significantly slowed urban development across South Chennai. CREDAI Chennai has urged the state to adopt a scientific, evidence-based approach to defining the wetland's influence zone so that environmental conservation and planned urban growth can progress together.
The demand follows the declaration of the Pallikaranai Marsh as a Ramsar Site of international importance, after which planning approvals in surrounding areas came under tighter scrutiny. Developers contend that while protecting the wetland is essential, the present interpretation of the buffer and influence zones has resulted in uncertainty over development permissions for large stretches of privately owned land.
According to CREDAI Chennai, the restrictions have affected more than one lakh patta landowners whose properties fall within the notified planning area despite being outside the core wetland. The association maintains that many of these lands have clear ownership records and have long been earmarked for residential, commercial and mixed-use development under approved planning frameworks.
The developers' body estimates that projects and investments worth nearly INR 72,000 crore could be impacted if the current planning freeze continues. Besides delaying real estate activity, it argues that the restrictions could affect employment generation, infrastructure creation, housing supply and allied industries that depend on construction activity across the rapidly developing southern suburbs of Chennai.
CREDAI has proposed that the government commission a detailed scientific study to accurately delineate the ecological influence zone of the Pallikaranai Marsh. It has suggested that future planning decisions should rely on hydrological assessments, biodiversity studies and environmental mapping rather than applying uniform restrictions across a broad geographical area.
Industry representatives also emphasised that sustainable development and environmental protection need not be mutually exclusive. They argued that modern planning practices, regulated construction norms and improved stormwater management systems can help safeguard sensitive ecosystems while allowing responsible development on eligible private land.
The Pallikaranai Marsh remains one of India's most significant urban wetlands, supporting diverse flora and fauna while serving as a natural flood buffer for Chennai. Environmental experts have consistently stressed the importance of preserving the marsh from encroachment and unplanned construction, particularly in view of the city's recurring flooding challenges.
The state government is yet to announce any changes to the existing planning framework. However, the industry's latest representation has reopened the debate over balancing ecological conservation with urban expansion in one of Chennai's fastest-growing real estate corridors, where both environmental concerns and development aspirations continue to shape future planning decisions.
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