Discuss the tension between urban housing schemes and eco-sensitive zone protections in India, with reference to the Bannerghatta National Park case.

Eco-Sensitive Zones (ESZs), notified under the Environment (Protection) Act, 1986, are conceived as "shock absorbers" around protected areas [1]. Where such buffers meet expanding metros, state housing schemes and conservation mandates collide — the Bannerghatta National Park (BNP) dispute being the sharpest recent illustration.

Why the tension arises

• Scale of housing demand: PMAY-Urban 2.0 alone targets assistance for one crore urban families [2], pushing housing boards toward large greenfield layouts.
• Land economics: the cheapest acquirable land lies in peri-urban farmland belts — precisely where ESZ buffers around parks fall.
• Regulatory softness: ESZ extents are fixed by executive notification, not statute, leaving room for dilution between draft and final stages [1].

The Bannerghatta illustration

• The 2016 draft ESZ covered 268.96 sq. km. (buffer 100 m–4.5 km); the final notification of 11 March 2020 retained only about 168.84 sq. km. after the State proposed a 1 km cap [3].
• The Karnataka Housing Board's Suryanagar 4th phase involved 1,938 acres acquired from unwilling villagers since 2013; in August 2026 a Division Bench of the Karnataka High Court quashed the acquisition, holding it fell within the proposed ESZ and abutted elephant corridors [4].
• India has 150 ground-validated elephant corridors [5]; layouts astride them intensify human–elephant conflict and habitat fragmentation.

Judicial balancing

• The Supreme Court (3 June 2022) mandated a minimum 1 km ESZ around protected areas [6], later modified in April 2023 to exempt areas with notified ESZs and avoid blanket rigidity [7].
• The Court's Central Empowered Committee has since urged restoration of the wider Bannerghatta buffer, showing layered institutional scrutiny.

The BNP episode shows the conflict is one of sequencing, not of irreconcilable goals: housing planned before ecology is mapped invites litigation and delay. Embedding notified ESZ maps into city master plans, prioritising brownfield redevelopment and transit-oriented densification over greenfield sprawl, and requiring cumulative-impact appraisal before acquisition can deliver shelter while honouring Articles 48A and 51A(g).