Kolkata warehouse collapse: Construction firm, architect blacklisted as death toll hits 15
Synopsis
Fifteen people are dead after a warehouse roof caved in at Taratala, Kolkata — and West Bengal CM Suvendu Adhikari has responded by permanently blacklisting the builder and architect. With no workers' register on site and an SIT already pointing to substandard materials and a flawed casting method, this tragedy exposes a systemic failure of construction oversight in one of India's busiest port zones.
Key Takeaways
The Taratala warehouse roof collapse in Kolkata has claimed 15 lives as of Friday, 27 June .
West Bengal CM Suvendu Adhikari blacklisted construction firm Ayan Traders and the building's architect, barring them from all future projects in the state.
The SIT of Kolkata Police found that substandard materials and a flawed casting pattern caused the collapse.
No workers' attendance register was maintained at the site, leaving the exact number of trapped persons unconfirmed.
The land was leased from Kolkata Port Trust Authorities on a 30-year lease by Sambhunath Behra , who hired Ayan Traders for construction.
The CM has urged citizens to report building-plan forgery to local police, warning that all those responsible will face consequences.
The death toll in the Taratala warehouse roof collapse in Kolkata climbed to 15 by Friday, 27 June, as West Bengal Chief Minister Suvendu Adhikari announced the total blacklisting of both the construction company Ayan Traders and the building's architect. The action bars them from taking up any projects — private or government — anywhere in the state.
What Led to the Blacklisting
Adhikari held Ayan Traders and the unnamed architect directly accountable for the tragedy, citing a complete failure of site oversight. 'There was lack of monitoring on part of the construction company Ayan Traders. The architect of the structure cannot also shy away from his responsibilities in the matter. That is precisely why the construction company and the architect of the structure have been blacklisted,' the Chief Minister told reporters on Friday afternoon.
He added that the blacklisting was only the beginning, warning that 'no one responsible for this mishap will be spared.'
How the Warehouse Was Built — and Who Was Responsible
According to reports, one Sambhunath Behra had taken the land on a 30-year lease from the Kolkata Port Trust Authorities to construct a three-storey warehouse at Taratala. Behra subsequently awarded the construction contract to Ayan Traders, a firm that had been handling multiple projects in the port area.
The roof of the under-construction structure collapsed on Wednesday, triggering the ongoing rescue and recovery operation.
SIT Findings: Poor Materials and Flawed Casting
A preliminary probe by the Special Investigation Team (SIT) of the Kolkata Police has identified two primary causes: the use of substandard construction materials and a flawed casting pattern in the roof slab. Investigators say the combination of these two factors directly caused the structural failure.
Notably, police have been unable to confirm the exact number of workers present at the site when the collapse occurred. No attendance register was maintained by the site managers, leaving authorities uncertain about how many people may still be trapped beneath the rubble.
No Workers' Register — a Critical Gap
The absence of a workers' register has emerged as a significant accountability failure. Kolkata Police confirmed that without any record of workers on site, there is no accurate count of those who remain unaccounted for. Rescue teams have continued to work through the debris.
This is not an isolated lapse — the absence of mandatory safety documentation on informal construction sites has been flagged repeatedly in past urban disasters across India.
Government's Warning and Next Steps
Chief Minister Adhikari also appealed to citizens to report any instances of forgery in building plans to their local police stations, promising swift action. The blacklisting of Ayan Traders and the architect signals a broader intent to enforce accountability in the construction sector, particularly in port-adjacent areas where oversight has historically been limited.
Investigations by the SIT are ongoing, and further arrests or punitive measures are expected as the probe deepens.
Point of View
But it does not address the structural conditions that made this tragedy possible. Port-adjacent construction in Kolkata has long operated in a grey zone of informal labour and minimal documentation — the missing workers' register is not an anomaly, it is the norm. Until mandatory safety audits and real-time worker registration are enforced at the project-approval stage rather than after a collapse, punitive action will remain reactive. The SIT's finding of 'flawed casting' also raises a harder question: who cleared the design, and at what stage did regulatory oversight fail?
NationPress
26 Jun 2026
Frequently Asked Questions
What caused the Taratala warehouse roof collapse in Kolkata?
A preliminary SIT probe found that substandard construction materials combined with a flawed casting pattern in the roof slab caused the collapse. The incident occurred on Wednesday at an under-construction three-storey warehouse in Taratala, Kolkata.
Who has been blacklisted following the Kolkata warehouse collapse?
West Bengal Chief Minister Suvendu Adhikari blacklisted construction firm Ayan Traders and the warehouse's architect. The blacklisting bars both from undertaking any private or government construction projects in West Bengal.
How many people have died in the Taratala warehouse collapse?
The death toll stood at 15 as of Friday morning, 27 June. Rescue operations are ongoing, and the exact number of workers still trapped remains unknown due to the absence of an attendance register at the site.
Who owned the warehouse and who was responsible for its construction?
Sambhunath Behra had taken the plot on a 30-year lease from the Kolkata Port Trust Authorities to build the warehouse. He contracted the construction work to Ayan Traders, a firm active in multiple port-area projects.
What action has the West Bengal government promised going forward?
CM Adhikari stated that no one responsible for the mishap will be spared, describing the blacklisting as 'the beginning.' He also urged citizens to report building-plan forgery to local police, pledging swift action in all such cases.
