When the Unit Next Door Explodes: Adjacency Risk Around India's Informal Manufacturing Clusters

On 31 August 2026, an explosion tore through a firecracker unit in Manori village, under Pipri police station in Kaushambi district of Uttar Pradesh. India TV News and the Deccan Chronicle reported the same day that the factory was reduced to rubble and that several nearby houses collapsed, with eight to ten JCB machines deployed to lift debris and search for survivors. Initial reports put the toll at five dead and more than 18 injured.

The figure that settled over the following day is the one worth studying. Coverage on 1 September, carried by Khaleej Times, Daily Ittehad and wire reporting reproduced by Shafaqna India, put the toll at 11 dead, including eight children aged between four and 13, and recorded that most of the dead were residents of the neighbouring houses that came down rather than workers inside the unit.

That distribution is the risk story. The operator's own loss, a shed and its stock, is small and commercially uninteresting. The loss that mattered sat outside the fence line, in structures with no relationship to the operation beyond proximity. The practical question for an Indian business is not how to insure a firecracker unit. It is what happens to your balance sheet when the unit beside yours detonates.

Indian manufacturing is heavily clustered, and much of that clustering is informal. Small units making fireworks, chemicals, plastics, foam, paint and packaging operate in converted residential plots, in unplanned estates on the fringe of a town, and in sheds sharing a wall with the next occupier. Housing sits within blast radius because the workforce lives where the work is. Our risk profile of the Sivakasi fireworks cluster works through the licensing and separation-distance regime meant to prevent exactly this.

For a legitimate business sited in or beside such a cluster, adjacency creates four distinct exposures, and they respond to four different instruments:

1. Physical damage to your building, plant and stock from blast overpressure, debris, and fire spreading from the neighbouring plot.
2. Business interruption while you rebuild, and separately while the site is cordoned and you cannot trade even though nothing of yours burned.
3. Casualties among your own people if your structure fails or your staff are caught in the open.
4. Third-party liability of your own, if your stored material contributes to the escalation once the first event starts.

Only the fourth is about your conduct. The first three arrive purely because of where you signed a lease.

Underwriters price the insured's own occupancy and then, at best, note the neighbour in the survey remarks. A risk manager should treat the adjoining occupancy as a rated exposure of its own and ask what changes when the plot next door changes hands or changes trade, which it often does without notice to anyone.

The statutory answer to a hazardous-substance accident is the Public Liability Insurance Act, 1991. It imposes strict, no-fault liability on an owner handling hazardous substances and makes liability insurance mandatory, so that a person harmed by an accident involving such a substance receives relief without first proving negligence. Relief is administered by the District Collector of the district where the accident occurred, and the scheme is funded by the owner's mandatory policy sitting alongside the Environment Relief Fund (ERF), to which the owner contributes a further amount collected with the premium.

As a mechanism for putting money quickly into the hands of a bereaved family living next to a demolished factory, the design is sound. As the answer to a commercial neighbour's loss, it fails on four counts.

• The relief is a statutory scale, not the measure of your loss. The Act delivers defined amounts for death, disability, medical expenses and damage to property. Those amounts are set for immediate relief. They are not intended to reinstate a damaged commercial building, replace stock, or fund lost gross profit.
• The mandatory limit is sized to the owner's paid-up capital, subject to a ceiling of Rs 50 crore. A one-shed operation with a nominal paid-up capital carries a nominal statutory limit. The cap sounds substantial and, at the small end of the market, the actual obligation is trivial.
• The policy may simply not exist. The Act binds owners handling notified hazardous substances above the quantities set out in the Rules. A unit operating outside its licence, or below the radar entirely, is no more likely to have bought Act cover than to have observed separation distances. Non-compliance is a penal matter for the operator and cold comfort for the claimant.
• The entity may not survive the event. Where the operator is a proprietorship or a small private limited company whose only asset was the shed that just exploded, nothing stands behind any liability beyond the statutory relief.

Our detailed treatment of no-fault claims under the Act and the Environment Relief Fund sets out how those claims are processed at collector level, and the compliance guide to the Act covers the owner-side obligations.

The instrument that actually pays a neighbouring business is its own material damage cover, and it pays without any inquiry into who was at fault next door.

Indian fire cover is written on named perils. For an adjacency event the perils that matter are fire, explosion and implosion, impact damage, and riot, strike and malicious damage (RSMD). Blast overpressure that cracks your masonry and blows out glazing is an explosion loss whether the explosion was yours or the neighbour's. Fire spreading from the adjoining plot is a fire loss. Debris landing on your roof is impact damage. Since April 2021, small and mid-sized commercial risks are largely written on the standard IRDAI products, Bharat Sookshma Udyam Suraksha and Bharat Laghu Udyam Suraksha, which carry the same peril set as the older fire policy form for risks within their sum-insured bands.

Three wording points decide whether that cover performs.

Deleted perils

RSMD and the storm, tempest and flood group can be deleted at inception for a premium discount on the traditional form, and units in low-flood inland estates delete them routinely to shave the bill. RSMD is the peril that picks up crowd damage in the hours after a fatal incident, when a village has lost eight children and the mood outside the gate turns. That is a poor trade on a policy covering crores of assets.

Sum insured, average and the clearance bill

Adjacency losses are frequently partial: a damaged wall, a scorched roof, stock ruined by heat and water. Partial losses are where under-insurance bites, because the average clause reduces every partial claim in the proportion the sum insured bears to the true value at risk. A building carried at its 2019 construction cost meets a 2026 repair bill at a fraction of what the file expects. Reinstatement value cover, refreshed at each renewal, is the fix.

An event that brings down structures also generates a clearance bill before any rebuilding starts. Debris removal is usually a sub-limited item expressed as a percentage of the claim, and the sub-limit is set once and forgotten. Where the adjoining structure has collapsed onto your boundary, the cost of clearing it and of demolishing what is left standing but unsafe is real money.

Once your insurer pays the material damage claim, it steps into your shoes and may pursue the party that caused the loss. Subrogation is the mechanism by which the cost of an adjacency loss is supposed to travel back to the operator who created it. Against an informal-sector neighbour it usually goes nowhere, for reasons worth understanding before you rely on it.

The first obstacle is that the statutory scheme is not a recovery fund. Relief under the Act and the ERF reaches persons affected by the accident on a defined scale, administered by the Collector. It is not an indemnity pool out of which a commercial insurer recoups what it paid on a fire policy, so a subrogating insurer has to bring an ordinary civil claim.

The second obstacle is the defendant. That claim needs a solvent one, and a small unlicensed unit typically has no voluntary public liability or commercial general liability policy behind it, no meaningful asset base, and a criminal case that pushes any civil proceeding years down the queue. Where the proprietor died in the blast, recovery moves to the estate.

The third obstacle is proof. Establishing the proximate cause of a loss inside a flattened structure, months after the site was cleared by JCBs during a live rescue, is a hard evidential exercise. Rescue work destroys the scene.

Adjacency risk is one of the few industrial exposures that is almost free to control at the point of siting and nearly impossible to control afterwards. The diligence belongs in the property search, alongside title and power supply.

Ask about the plot, not just the building

1. What trade is carried on at each adjoining plot, and under what licence? Manufacture, possession and sale of fireworks and other explosives require a licence from the Petroleum and Explosives Safety Organisation (PESO). Chemical and process units above notified thresholds carry their own approvals. Ask to see them.
2. What is stored, and in what quantity? The Act's obligations bite where notified hazardous substances are handled above the quantities set out in the Rules. Quantity is what converts a shed into a statutory hazardous installation.
3. Is a Public Liability (Act) policy in force? Ask the landlord or the estate association for a copy of the policy and evidence of the ERF contribution paid with the premium. A neighbour that cannot produce it either does not need it, which it should be able to demonstrate, or is operating without it.
4. Does the neighbour carry voluntary liability cover, and at what limit? The statutory policy discharges a legal duty. Only a commercial general liability or voluntary public liability policy at a sensible limit stands behind a real third-party claim.
5. What separation distance actually exists, measured on site rather than on the sanctioned plan, and what is built in the gap.

Put it in the lease

The landlord controls who occupies the next unit, and the lease is where that control becomes yours to influence. The useful clauses are unremarkable and rarely offered unasked: a warranty on the current use of adjoining premises the landlord owns, an obligation to notify a change of use, a right to inspect common boundary walls, and a termination right if a hazardous trade is introduced next door during the term. In a multi-occupier estate, ask whether tenant insurance evidence is collected at every renewal or only demanded once at signing.

A buyer rather than a tenant has one addition to make. A plot whose neighbours make its property insurance renewal expensive and contentious is worth less than the comparable sale a street away, and that discount is negotiable if you identify it before the offer.

A survey estimate after an adjacency event counts what is broken. Two of the larger exposures never appear on that list.

Interruption without damage. After a fatal blast the area is cordoned while rescue and investigation proceed. A business inside that cordon cannot receive material, ship goods, or bring staff to work, even where its own premises are untouched. Standard fire loss of profits cover is triggered by damage to the insured's own property, so a pure access denial produces no claim. The answer is a denial of access or access-prevention extension, which responds to loss caused by damage in the vicinity that prevents access to the insured premises. Check the radius, the waiting period and the sub-limit. All three are commonly set at values that make the extension decorative.

Your own people. Injury to your employees is not a third-party matter for you. It sits under the Employees' State Insurance Act, 1948 where the establishment is covered, and under the Employee's Compensation Act, 1923 where it is not, with an Employees' Compensation policy indemnifying the employer in the second case. Group personal accident cover with a medical-expenses section meets hospital costs, which statutory compensation does not fund. Your employees are separately third parties as against the neighbouring operator and can pursue relief through the Collector, but that relief runs on the statutory scale and does not reduce your own obligations to them.

One item belongs on the list for completeness. Where the blast next door ignites your own stored material and the escalation damages a fourth party, you are a defendant rather than a claimant. Businesses storing solvents, LPG, packaging film or foam in a dense estate should read their own liability insurance limits with that sequence in mind.

Every recovery described here turns on wording rather than on the product name. Whether RSMD was deleted at inception three renewals ago. Whether the debris-removal sub-limit is a percentage of a sum insured that has not moved since 2019. Whether the denial-of-access extension specifies a radius wide enough to include the plot that actually exploded, and a waiting period short enough to trigger inside a two-week cordon.

Those clauses sit deep inside individual insurer wordings and do not line up section for section across the market, so comparing them by hand across a panel is slow and error-prone. Sarvada makes insurer wordings structured and searchable, so a broker can compare extensions, sub-limits and exclusions clause by clause and show a client sited beside a hazardous neighbour exactly where its recovery starts and stops.

If you place risks in industrial estates or advise tenants on siting, Request Access to Sarvada to compare insurer wordings on these clauses side by side.