Definition
The Open Space Ratio (OSR) is an urban planning regulation fiercely enforced in Indian cities to prevent concrete jungles. It legally mandates that a specific percentage (frequently 10% to 15%) of the total plot area must be left entirely devoid of any built structures, dedicated solely to open-to-sky gardens, playgrounds, or greenery.
Practical Example
A builder purchases a sprawling 10-acre plot to construct a township. However, local OSR rules mandate a 10% open space. This means the builder is legally barred from erecting buildings or paved roads on 1 full acre of the property. They must design this 1 acre as a central park to successfully get their layout plan approved.
Application in Superwise
Balancing FSI optimization and OSR compliance changes the project's financial viability. Before land acquisition is finalized, planning directors use Superwise’s feasibility module to map out the OSR deductions. This ensures the theoretical project revenue projections are based accurately on the legally permissible built-up footprint, not the gross land area.
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