- 1877: The original building is constructed
- 1903: The building is bought by Josep Batlló
- 1904: Batlló hires Gaudí
- 1934: Josep Batlló dies
- 1954: Insurance company Seguros Iberia acquires Casa Batlló
- 1970: First refurbishment
- 1993: Current owners purchase the house
- 2005: Casa Batlló becomes a UNESCO World Heritage Site

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