Order 6 Rule 17 CPC | Post-Trial Amendment Cannot Be Allowed To Explain Opponent’s Documents Using Pre-Existing Facts Within Personal Knowledge: Bombay High Court

"The defendant cannot contend that she was taken by surprise by the documents produced by the Plaintiffs when the facts sought to be introduced relate to events in her own life and were within her personal knowledge." Holding that the requirement of establishing due diligence under the proviso to Order 6 Rule 17 of the Code of Civil Procedure, 1908 (CPC) is a jurisdictional fact that cannot be relaxed, the Bombay High Court ruled on November 3, 2026, that a defendant cannot amend a written statement post-commencement of trial to introduce pre-existing facts within their personal knowledge under the garb of responding to documents produced by the plaintiff.

The petitioners, who are landlords of a property at Tardeo Road, Mumbai, initiated eviction proceedings under Section 16(1)(n) of the Maharashtra Rent Control Act, 1999, alleging that the respondent-tenant had not used the suit flat for residential purposes for over six months prior to the suit. The tenant filed a written statement in September 2022 claiming she had continuously resided in the suit premises from her birth till date. During the trial, the landlords introduced evidence demonstrating that the tenant resided in Bengaluru, following which the tenant filed an application under Order 6 Rule 17 CPC in 2026 to incorporate explanations regarding her marriage, residence, and medical history in Bengaluru. The Small Causes Court allowed the amendment, which came under challenge before the High Court.

Whether an application for amendment of the written statement filed after the commencement of trial satisfies the due diligence test under the proviso to Order 6 Rule 17 CPC when the proposed amendments relate to pre-existing facts within the defendant's personal knowledge?

Whether a defendant can be permitted to amend the written statement post-trial to explain away or resile from categorical admissions previously made in favour of the plaintiff?

Justice Arun R. Pedneker observed that once trial has commenced upon the framing of issues and recording of evidence, the bar under the proviso to Order 6 Rule 17 CPC comes into play. The Court emphasized that establishing due diligence is a mandatory jurisdictional prerequisite before the court can exercise discretion to grant an amendment at a belated stage.

Due diligence is a jurisdictional fact under the proviso to Order 6 Rule 17 CPC

The Court underscored that the tenant could not claim lack of opportunity or surprise merely because the landlords had introduced documentary proof of her Bengaluru residence. The facts sought to be pleaded pertained to her own marriage in 1981, property transactions in 1992, and hospitalisation in 2018, which were indisputably within her personal knowledge decades prior to the institution of the suit.

Reiterating the settled position of law, the High Court held that the explanation offered by the tenant that the amendment was necessitated by the documents brought on record by the plaintiffs was wholly insufficient. The Court noted that these were not subsequent developments that arose after the filing of the initial written statement.

Justice Pedneker recorded that the requirement of due diligence under the proviso to Order 6 Rule 17 CPC is jurisdictional in nature, relying on the Supreme Court's ruling in Vidyabai v. Padmalatha, and held that in the absence of a finding that the defendant could not have raised the matter earlier despite due diligence, the trial court had no jurisdiction to allow the amendment.

Defendants cannot resile from admissions or displace plaintiff's accrued advantage

Addressing the prejudice caused to the landlords, the Court noted that the tenant had made a categorical admission in her original written statement that she had resided in the Mumbai flat continuously from her birth. The proposed amendment sought to introduce an inconsistent version that she lived between Mumbai and Bengaluru, thereby seeking to explain away her earlier unequivocal assertion.

The Court referred to the Supreme Court's decisions in Modi Spinning & Weaving Mills Co. Ltd. v. Ladha Ram & Co. and Life Insurance Corporation of India v. Sanjeev Builders Private Limited to reiterate that while inconsistent or alternative pleas may be permissible, an amendment cannot be allowed if it displaces the plaintiff from admissions made by the defendant or withdraws an admission to cause irreparable prejudice.

The Bench observed that the trial court erred in testing the application only on the touchstone of whether the amendment was necessary to determine the real controversy, while completely bypassing the statutory bar and jurisdictional requirement mandated by the proviso to Order 6 Rule 17 CPC.

The High Court allowed the writ petition, quashed and set aside the impugned order dated October 1, 2026 passed by the Small Causes Court at Mumbai below Exhibit 35, and dismissed the tenant's application for amendment of the written statement.

Date of Decision: November 3, 2026