The Maharashtra cabinet had approved the two bills on Friday and they were introduced in the assembly and later in the Council for passage.
In the notice, issued on Friday, the BMC has asked the bungalow owner to show 'sufficient cause' within seven days as to why such alterations should not be removed.
The BMC notice to the couple recently arrested over the Hanuman Chalisa row was issued under Section 488 of the Mumbai Municipal Corporation Act, 1888, according to which, officials can visit any building and ascertain whether any illegal alterations have been undertaken.
The Bombay high court on Tuesday directed the Mumbai civic body to demolish the unauthorised construction at Union minister Narayan Rane's bungalow in Juhu area in Mumbai, noting that it violated the Floor Space Index (FSI) and Coastal Regulation Zone (CRZ) rules.
A wing of the building, located in Kurla, collapsed around midnight, officials said, adding that its another wing was also likely to crash and was vacated.
As per the BMC, Ranaut had carried out several alterations without permission at her Pali Hill bungalow in Mumbai, which were first noticed on September 5. The court wanted to know whether alterations, illegal or not, existed prior to that, because under section 354 A of the Mumbai Municipal Corporation Act, the BMC can stop only 'ongoing' illegal construction.
Kondhwa police station Inspector Varsharani Patil said, "We have registered a case against the three co-owners under sections 304 (causing death by negligence), 341 (punishment for wrongful restraint), 342 (wrongful confinement) and relevant sections of Mumbai Municipal Corporation Act and arrested them."
On April 28 this year, the civic body issued notice to Sharma under section 351 of the Mumbai Municipal Corporation Act, claiming that certain constructions in the 18-storey residential building 'DLH Enclave' in Goregaon, in which the actor has a flat, were illegal and hence will have to be razed down.
Several people are feared trapped under the debris of the structure.