Real estate companies in top metros have said that local government bodies approve building plans only after the project has been granted environment clearance.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/following-sc-observation-real-estate-companies-say-building-plans-approved-only-after
[2] http://admin.indiaenvironmentportal.org.in/category/author/ravi-teja-sharma
[3] http://admin.indiaenvironmentportal.org.in/category/author/kailash-babar
[4] http://admin.indiaenvironmentportal.org.in/category/newspaper/economic-times-new-delhi
[5] http://admin.indiaenvironmentportal.org.in/thesaurus/environment-clearance-ec
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/housing-construction
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/buildings
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/construction-industry
[9] http://admin.indiaenvironmentportal.org.in/thesaurus/national-green-tribunal-ngt
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment-act-1986
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/noida
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/gurgaon-t
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bangalore-t
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mumbai
[15] http://admin.indiaenvironmentportal.org.in/category/thesaurus/crz-clearance-coastal-clearance
[16] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment