Section 171(2) in West Bengal Municipal (Building) Rules, 2007
(2)Provision for Tree Cover shall be included in the site plan,(I)for any housing complex covering a total floor area of 6000 sq. metre or more, the applicant shall arrange for raising and maintenance of tree cover at their own cost which shall be at least 15% of the land area within the mandatory open space of the premises.(ii)for any other housing complex having lesser total floor area, the tree cover shall be reduced proportionately in the perspective of clause (i) of this sub-rule.
