Interlocutory Restraint of Statutory Property Arbitration Requires Pleaded Substantive Relief; No Parallel Inherent/“Common Law” Power to Modify Restrictive Covenants Outside s.50 LCLRA 2009

1) Introduction

In Jackson Way Properties Ltd v Smith (Approved) [2026] IEHC 548, the High Court (Nolan J) refused an application by the plaintiff landowner company (“Jackson Way”) to restrain the defendant (a beneficiary of a restrictive covenant) from instituting or continuing a statutory property arbitration seeking compensation from Dún Laoghaire-Rathdown County Council (“DLRCC”) arising from motorway works. Jackson Way also sought to join DLRCC as a notice party.

The dispute sat against a long history involving: (i) a restrictive covenant burdening lands now owned largely by Jackson Way; (ii) compulsory acquisition and occupation by DLRCC for the M50; (iii) a 2003 arbitration award in Jackson Way’s favour assessed on the premise of an unencumbered title; and (iv) later confirmation by the Court of Appeal that the covenant continued to benefit the defendant’s lands.

The key legal issues were:

  • whether the Court could grant an interlocutory injunction restraining the defendant’s statutory arbitration when such relief was not pleaded as part of the substantive claim;
  • whether Jackson Way could invoke an inherent or “common law” jurisdiction to discharge/modify a restrictive covenant alongside (or instead of) the statutory scheme in s.50 Land and Conveyancing Law Reform Act 2009;
  • whether Wrotham Park/Morris-Garner “negotiating damages” could justify restraining the arbitration or compelling a release of covenant rights; and
  • whether DLRCC (or the arbitrator) should be joined.

2) Summary of the Judgment

Nolan J refused both applications.

  • Injunction refused: an interlocutory injunction must be in aid of a pleaded substantive cause of action; the proposed restraint was not ancillary to the relief pleaded. The alleged prejudice to Jackson Way from the defendant’s arbitration was speculative, and the balance of justice strongly favoured allowing the statutory process to proceed.
  • No “inherent/common law” workaround: where a statute provides a mechanism (here, s.50), the court will not ordinarily recognise a parallel inherent jurisdiction to achieve substantially the same end; moreover, s.50 relief is prospective, not retrospective.
  • Wrotham Park/Morris-Garner inapplicable: negotiating damages are a measure of damages for an established wrong; they do not create a cause of action or a power to compel surrender of another’s property right, and there was no pleaded breach by the defendant.
  • Okunade-type considerations: the relief functioned like a stay/prohibition of a statutory process; the court must minimise the overall risk of injustice, which here favoured refusing interference.
  • Joinder refused: DLRCC was not shown to be necessary or proper for complete relief between the existing parties; there was no basis to join the arbitrator.

3) Analysis

A. Precedents cited and their role

(i) Jackson Way Properties Limited v Smith & Ors [2023] IECA 185

This was the pivotal background determination. The Court of Appeal (Whelan J) rejected Jackson Way’s prior position and held that the restrictive covenant was intended to benefit the defendant’s lands; it accepted later evidence clarifying that intention and held that conduct around a later modification created an estoppel binding successors in title (including Jackson Way). Nolan J treated that appellate declaration as determinative of the covenant’s continuing validity (subject to any legal extinguishment over compulsorily acquired portions).

(ii) Merck Sharpe and Dohme v. Clonmel Healthcare [2019] IESC 65 and Perfect Stripe Ltd trading as Grafter [2025] IEHC 585

Nolan J applied the modern Irish test for interlocutory injunctions as clarified in Merck (per O’Donnell J): the applicant must show (a) that the final relief could include a permanent injunction in the same terms, (b) a fair/serious issue to be tried, and (c) that the balance of justice favours an injunction. Perfect Stripe was cited as a recent High Court restatement of Merck.

Crucially, Nolan J emphasised a foundational procedural constraint: an interlocutory injunction must be in aid of (and within the scope of) the pleaded substantive cause of action. Because Jackson Way’s summons/statement of claim did not seek to restrain the defendant’s arbitration, the interlocutory restraint was, in effect, free-standing and impermissible.

(iii) Okunade v Minister for Justice [2012] IESC 49

Although the dispute was not a conventional judicial review, the injunction sought would operate analogously to a stay/prohibition of a statutory procedure. Nolan J therefore treated the application as engaging Okunade-type principles: the court should minimise the overall risk of injustice, factoring the orderly operation of the statutory scheme and the consequences of granting or refusing the restraint. On those factors, preventing the defendant from advancing a long-delayed statutory compensation claim created a clearer injustice than the speculative prejudice asserted by Jackson Way.

(iv) Guia Properties Ltd v The Paddocks Killeline Management Company Ltd & others [2026 IEHC 153]

Nolan J relied on Guia Properties for the proposition that relief under s.50 Land and Conveyancing Law Reform Act 2009 is not retrospective; it operates from the date of the order. This mattered because part of Jackson Way’s commercial objective (as the court perceived it) was to “fix” title problems affecting enforcement of the 2003 award—an objective not readily achievable through a prospective-only mechanism.

(v) Wrotham Park Estate Co Ltd v Parkside Homes Ltd [1974] 1 WLR 798 and Morris-Garner v One Step (Support) Ltd [2018] UKSC 20

These authorities were deployed by Jackson Way to frame compensation for discharge/modification as “negotiating damages” (a hypothetical release fee). Nolan J summarised Morris-Garner (Lord Reed): negotiating damages may sometimes be an appropriate method of valuing loss where breach results in the loss or unauthorised use of a valuable asset protected by a right, but they are not a general discretionary “release fee”, nor a substitute for ordinary compensatory damages merely because quantification is hard.

Nolan J held these cases did not assist Jackson Way because:

  • there was no pleaded or established wrong by the defendant (no breach of covenant by her; she was asserting her benefit);
  • negotiating damages are a remedy for a wrong, not a tool to create a power to compel surrender of another’s proprietary right; and
  • using negotiating damages to force a release would collide with the constitutional status of property rights absent clear legal authorisation.

B. The Court’s legal reasoning (core holdings)

(i) Interlocutory relief must track the pleaded case

The decisive procedural defect was that the motion sought to restrain a separate statutory arbitration, but the plenary summons/statement of claim did not seek any final relief in those terms. Nolan J treated this as fatal: interlocutory orders are not available as tactical measures to pressure settlement or “park” a statutory claim while another dispute is resolved.

(ii) Speculative prejudice is not enough

Jackson Way’s principal contention was that an award to the defendant might be used by DLRCC to resist, reduce, or otherwise affect Jackson Way’s effort to enforce its own unpaid 2003 award. Nolan J characterised this as contingent (“might”), not a probability grounded in a pleaded legal mechanism. That level of conjecture could not justify stopping a statutory compensation process.

(iii) Statutory exclusivity: no parallel inherent/common law jurisdiction

Jackson Way advanced (in these proceedings) an asserted inherent or “common law” jurisdiction to discharge/modify covenants, while separately maintaining a s.50 application before another judge. Nolan J rejected the idea of a co-existing inherent/common law power that duplicates or circumvents the statutory scheme: inherent jurisdiction generally fills lacunae; it does not compete with an express statutory mechanism governing the same relief.

(iv) Property rights and proportionality

Nolan J treated the defendant’s benefit of the restrictive covenant as a property right. Restraining her pursuit of compensation for alleged interference with that right would require a clear legal basis and proportionality. Jackson Way could not point to an identified legal right of its own that required protection by restraining the arbitration, particularly where its feared harm was speculative.

(v) Public-law analogies: staying a statutory process

By analogy with Okunade, the court emphasised the need for caution before interfering with an ongoing statutory process, especially one delayed for many years. The “overall risk of injustice” lay in further delaying the defendant’s statutory claim rather than in allowing it to proceed.

C. Likely impact

  • Pleading discipline in injunction practice: applicants seeking to restrain arbitrations (including statutory compensation arbitrations) must ensure the substantive claim actually seeks that final relief, or at least relief to which the interlocutory restraint is truly ancillary.
  • High threshold to halt statutory compensation mechanisms: where relief resembles a stay/prohibition of statutory proceedings, the court will be slow to intervene absent a strong merits case and demonstrable injustice.
  • Restrictive covenant modification is channelled through s.50: the judgment reinforces that attempts to re-package covenant discharge/modification as “inherent jurisdiction” or as “negotiating damages” will face strong headwinds.
  • Negotiating damages confined: the decision cautions against treating Wrotham Park/Morris-Garner as a general tool to compel a release of property rights; they remain remedial principles tied to an established wrong.

4) Complex concepts simplified

  • Restrictive covenant: a promise attached to land (here, preventing building) that binds successors in title to the burdened land and benefits specified land (the “dominant” land).
  • Benefit vs burden: the burden restricts what the servient owner can do; the benefit is a proprietary advantage enjoyed by the dominant owner.
  • Statutory property arbitration: a legislatively created process to determine compensation disputes (here, relating to compulsory acquisition and interference with property rights).
  • Negotiating damages: damages assessed by a hypothetical bargain for release from an obligation; a way of valuing loss from an established wrong, not a free-standing right to buy-out another’s entitlement.
  • Inherent jurisdiction: the court’s residual power to control its own process and prevent injustice where no adequate legal framework exists; it is not usually available to sidestep an express statutory regime.
  • Chose in action: an enforceable legal claim (the defendant’s compensation claim), treated as a form of property in law.

5) Conclusion

Jackson Way Properties Ltd v Smith [2026] IEHC 548 is a pointed refusal to let interlocutory injunction practice be used to stall a statutory compensation arbitration where (i) the restraint is not anchored in the pleaded cause of action, (ii) the asserted prejudice is speculative, and (iii) the applicant is, in substance, seeking strategic leverage in a wider compensation and title dispute. The judgment also reinforces that modification/discharge of restrictive covenants is primarily a matter for the statutory pathway in s.50 Land and Conveyancing Law Reform Act 2009, and that Wrotham Park/Morris-Garner negotiating damages do not provide a backdoor mechanism to compel surrender of another party’s property right.