C-1 dangerous building notice in Mumbai: must you vacate? What Section 354 and the Supreme Court say

Rules as of 13 October 2026.

If the BMC places your building in category C-1, the law does not ask for your agreement. Section 354 of the Mumbai Municipal Corporation Act, 1888 lets the Municipal Commissioner order the owner or occupier to pull down, secure or repair a structure that is dangerous, and in August 2022 the Supreme Court upheld eviction and demolition of a Chembur society building classed C-1. A separate fact: the deadly Kalyan collapse of May 2025 was not, on the reports we read, a C-1 case.

What Section 354 says

As reproduced by the Supreme Court in Ratilal S. Pujara v. Municipal Commissioner, MCGM (Civil Appeal 5825 of 2022, decided 25 August 2022), the section applies when it appears to the Commissioner that a structure is "in a ruinous condition, or likely to fall, or in any way dangerous to any person occupying". The Commissioner "may, by written notice, require the owner or occupier of such structure to pull down, secure or repair" it. Sub-section (2) lets the Commissioner require a hoard or fence to protect passers-by.

The same judgment records that Section 353B requires a structural audit of buildings after 30 years, and that the Commissioner may order an examination earlier after recording reasons.

The categories: what C-1 means

Category	Meaning in the judgment's table
C-1	Unsafe, dangerous, uninhabitable: to be vacated and demolished
C2A	Partly unsafe: major structural repairs by partly vacating the dangerous part
C2B	Major structural repairs without vacating
C3	Minor repairs

What happened in the Chembur case

The building was a 1967 society building in Chembur. A structural audit on 22 July 2014 led to a report of 29 July 2014 placing it in C-1. A re-inspection on 6 December 2014 found it dangerous and dilapidated. Section 354 notices followed on 19 January 2015, with an eviction notice for the appellants' flat on 21 February 2015. The High Court dismissed their challenge on 16 October 2019, and the Supreme Court dismissed the appeal on 25 August 2022, about seven and a half years after the Section 354 notice.

The Court accepted that the C-1 building "has to be evacuated immediately to avoid the mishaps". It said the Commissioner's satisfaction had been recorded in line with the procedure, that being senior citizens did not justify leniency, and that a separate dispute over terrace regularisation could not stop the Corporation from checking the building's safety. It also noted that the owners' right to the flat is "an independent right" that demolition does not affect. In that society the redevelopment agreement offered 740 sq ft carpet area flats and displacement compensation of ₹30,000 a month, raised to ₹40,000 in December 2019. Those figures belong to that agreement and are not a statutory entitlement.

Two practical points follow. First, the notice goes to the "owner or occupier", so a tenant or a member in possession is not outside its reach. Second, the Court looked at whether the Commissioner followed the prescribed procedure and recorded satisfaction, so a challenge is most likely to turn on the audit and the procedure, not on the occupant's hardship. Whether that is your position is a question for your advocate.

Worked example: what a vacate order costs you

Take the compensation in that case and assume (illustrative) the project takes 24 months. At ₹40,000 a month, that is ₹9.6 lakh in rent support. If your own rent for a comparable flat is higher, say ₹55,000, the gap of ₹15,000 a month is ₹3.6 lakh over 24 months that you carry unless the agreement covers it. Check the shifting and brokerage terms and the date by which the developer must finish.

The procedure around it

A Bombay High Court bench of Justices Anoop Mohta and A.A. Sayed approved guidelines in June 2014 to fill procedural gaps in Section 354. As summarised in a commentary, they cover how buildings are classified into C-1 and other categories, notices to occupiers, inspection by technical committees, defined roles for police and civic officers in evictions, and alternative accommodation with a right to re-occupy rebuilt premises. We have not read the full judgment, so check the details with an advocate.

What the Kalyan collapse was, and was not

On 20 May 2025, a slab collapsed in the Saptashrungi Co-operative Housing Society building at Chiknipada, Kalyan East, in Thane district. Reports say six people died, including a two-year-old, and six were injured. Police said flooring work in a fourth-floor flat had apparently caused the slab to crash through four floors, and a flat owner was arrested under the Bharatiya Nyaya Sanhita and the MRTP Act. The Kalyan sub-divisional officer said the building was not on the list of buildings declared dangerous. The remaining structure was to be demolished as unsafe. The building is about 30 years old, with 52 rooms and around 200 residents. A KDMC official said there was no rehabilitation provision for such cases and only temporary shelter could be offered.

The lesson is two-fold. A C-1 label is not the only way a building can fail: unsanctioned structural work inside a flat can be as dangerous. And the Mumbai Section 354 process described above applies under the 1888 Act, whereas Kalyan-Dombivli is outside Mumbai, so its civic body works under different legislation that we have not cited here.

Checklist if you get a dangerous-building notice

• Ask for the structural audit report and the date of the notice.
• Check the category in the report: C-1, C2A, C2B or C3 are very different outcomes.
• Read the redevelopment or repair agreement for rent, shifting costs, carpet area and timeline.
• Know that courts have not been lenient with occupants of a building classed C-1, even where the occupants are senior citizens.
• Get an advocate to read the notice before the deadline.

This article explains the law and does not replace advice from an advocate or structural engineer.