This situation is common with long-held industrial properties in Maharashtra. As you are preparing to sell the property, getting both the ownership mutations and the land conversion regularized is essential because the buyers, banks, and legal auditors will not complete a sale on a property with un-regularized land use or outdated 7/12 records.
To update the 7/12 records, you may have to approach the land revenue department with an application along with the documents viz., Re-constitution Deed / Revised Partnership Deed, Documents showing the formal retirement of former partners, Certified copies of death certificate of deceased partners, The Form A / Form C issued by the Registrar of Firms reflecting the updated structure.
The Talathi will issue a public/legal notice under Form 135 (Notice of Mutation) to the legal heirs of the deceased/retired partners to verify there are no disputes or unclaimed inheritance rights. Once certified, the names on the 7/12 extract will update to show the current surviving partners (or the Partnership Firm name, depending on how title was originally taken).
As manufacturing units are already built and operating without prior NA permission, this is technically considered an unauthorized Non-Agricultural (NA) use under the Maharashtra Land Revenue Code (MLRC), 1966. You cannot directly apply for standard prospective NA; you must apply for Regularization of Unauthorized NA Use
Apply to the District Collector / Sub-Divisional Officer (SDO) at Palghar (Wada falls under Palghar district) for regularizing the unauthorized industrial use by complying with the procedural formalities. Once approved and fees/penalties are paid, the Collector issues a Regularization Order and a Sanad (NA certificate).Maharashtra allows automatic/deemed NA under Section 44A of MLRC if the land is in a designated Industrial Zone in the Regional Plan (MRTP Act).
Land revenue matters involving old partnership mutations and regularizations require local liaison with the Tahsildar, Circle Officer, and SDO offices in Palghar.