No, co-owned property in Mumbai generally cannot be sold without the consent of all owners, since each co-owner holds an undivided interest in the entire property, not a specific, separately saleable portion. Under general property law principles, a co-owner can only transfer their own share, and any sale attempting to transfer the whole property without unanimous consent is not binding on the non-consenting owners.

If one co-owner attempts to sell without agreement, the affected owners can file a suit for injunction to prevent the sale or for a declaration that the transaction is void to the extent of their share. Where co-owners genuinely wish to exit jointly held property, a partition suit offers a lawful route — either dividing the property physically or, where that's impractical, ordering a sale with proceeds distributed according to each owner's share.

It's worth noting that a co-owner can sell only their own undivided share to a third party, though this often creates practical complications for the buyer, making full-owner consent the more common and cleaner path. Any existing family settlement or partition deed should also be reviewed, as it may already define specific rights.

Given the complexity of co-ownership disputes, consulting professionals early helps avoid costly litigation; the team at Aapka Legal Advice can guide you through partition or injunction proceedings as needed.

Understanding co-ownership rights before any property in Mumbai is sold protects every stakeholder's legal interest.