Gurugram buildings tilt after adjacent basement excavation
What happened
Two separate incidents in Gurugram in the same week. On 19 October 2026 an under-construction five-storey building in Sushant Lok-I cracked and tilted after excavation began for a basement on the adjoining plot. On 22 and 23 October a six-year-old residential building in Sector 31 cracked and tilted slightly during excavation on its adjoining plot.
What reports confirm
- Sushant Lok-I, Block C, plot 1770, Monday 19 October: the under-construction five-storey building developed cracks and tilted after excavation started for a basement on the adjacent plot (police). (Hindustan Times)
- Officials said the building tilted by 2.5 inches and two large cranes were deployed to support it. (Hindustan Times)
- Three neighbouring residential buildings of four flats each were vacated, at least 12 families; construction was halted and the area sealed. (Hindustan Times)
- An FIR was registered against the owner of the adjoining plot, its contractor and the earthmover operator. (Hindustan Times)
- A resident (a claim, not an official finding) said the contractor dug an eight-foot-deep trench along the entire length of the building instead of excavating in phases. (Hindustan Times)
- Sector 31, plot 769: residents raised the alarm on Thursday 22 October; on Friday 23 October police issued evacuation notices to three neighbouring buildings. The six-year-old building had cracks of around 1 to 1.5 inches (police); at least four families were evacuated and work was halted. (Hindustan Times)
- Sector 31 residents allege careless, non-phased excavation by a JCB operator on the adjoining plot (a claim, not an official finding). (Hindustan Times)
- Buildings in Sector 31 also tilted within days of the Sushant Lok-I incidents, renewing concerns over construction safety in Gurugram; a Hindustan Times explainer (30 Oct 2026) set out how basement excavation on one plot puts neighbouring buildings at risk. (Hindustan Times explainer)
Cause: No formal cause published. The FIR process for Sushant Lok-I is ongoing.
Likely mechanism, general engineering
General engineering, not a finding about this event
A shallow footing gets its bearing capacity from the soil beside and beneath it, so removing soil close to and below the footing level takes away the confinement that holds that ground in place. An unsupported cut along the whole length of a building lets the soil under the footings move sideways and down into the excavation, and because a long continuous cut leaves no undisturbed ground to share the load, settlement is uneven and the building rotates toward the hole. Standard practice is to stage the work in short alternating bays (hit and miss), install temporary support or underpinning bay by bay, and monitor the neighbour for movement as you go. Formal causes have not been published and the FIR process is ongoing.