Partially Constructed Apartment Blocks Are Not “Houses” Under s.2 Planning and Development Act 2000 for s.48(3A) Development Contribution Reductions

1) Introduction

In Hibernia Real Estate Group Ltd v Dun Laoghaire-Rathdown County Council [2026] IEHC 141, the High Court (Ms. Justice Emily Farrell) determined whether a partially constructed apartment block sold to the plaintiff in November 2014 constituted a “house” (or “houses”) within the statutory definition in s.2(1) of the Planning and Development Act 2000 (“PDA 2000”).

The classification mattered because amendments introduced by s.29 of the Urban Regeneration and Housing Act 2015 (commencing 1 September 2015) inserted s.48(3A)–(3C) PDA 2000, requiring planning authorities—where specified conditions are met—to apply a later, reduced development contribution basis where that would reduce the amount payable. The plaintiff contended the development contributions should be recalculated by reference to the Council’s later 2013 scheme rates, producing an agreed refund sum. The defendant Council maintained that what was sold in 2014 already comprised “houses”, meaning the reduction mechanism did not assist the plaintiff.

The parties were corporate/public bodies; evidence as to the construction stage was effectively uncontested. A pleaded limitations defence fell away because the claim was pursued in unjust enrichment arising from a 2019 payment, and proceedings issued in 2024 were within time.

2) Summary of the Judgment

• The Court held that a partially constructed building, though “a building” in ordinary language, was not a “house” within s.2(1) PDA 2000 where it had not become capable of occupation as a dwelling.
• The phrase in the definition—“and where appropriate, includes a building which was designed for use as 2 or more dwellings…”— could not be read in isolation from the core “dwelling/occupation/provided for use” concept.
• Accordingly, the plaintiff was entitled to the benefit of s.48(3A) PDA 2000 (as inserted in 2015), and to an order directing repayment of the agreed sum of €526,120.97.
• The Court rejected reliance on Explanatory Memoranda as an interpretative aid in this context and reiterated that subsequent amendments cannot be used to construe earlier statutory text.

3) Analysis

3.1 Precedents Cited (and Their Influence)

(a) Statutory interpretation: language, context, purpose as a continuum

The Court treated Heather Hill Management Co. CLG & Anor v. An Bord Pleanála [2022] IESC 43, [2024] 2 IR 222, [2022] 2 ILRM 313 as the primary modern statement of method. It anchored the analysis in the primacy of statutory text while insisting on reading that text in its legal and statutory setting.

The Court relied on DPP v. Brown [2018] IESC 67, [2019] 2 IR 1 as filtered through Heather Hill, including:

• words are the “first port of call” and receive their ordinary meaning;
• words must be read in context (immediate provision, Act as a whole, legislative history where appropriate);
• canons of construction assist; and
• purpose is engaged where ambiguity persists, but the process is a continuum, not sealed compartments.

The Court also drew from A, B & C (A Minor) v. the Minister for Foreign Affairs and Trade [2023] IESC 10, [2023] 1 ILRM 335 (Murray J.) for the proposition that language, context and purpose are “potentially in play in every exercise”, but with language remaining predominant and “purpose” requiring clear, specific, decisively probative support if it is to displace apparently clear text.

(b) Limits of purposivism and “legislative intent”

Heather Hill was used to emphasise that “legislative intent” is not a subjective inquiry into parliamentarians’ minds, citing Crilly v. Farrington [2001] 3 IR 251. The judgment also referenced:

• DPP v. Flanagan [1979] IR 265 (Henchy J.) on interpretation as an objective legal effect attribution exercise;
• McGrath v. McDermott [1988] IR 258 (Finlay C.J.) warning against judges substituting their own view of sensible outcomes.

(c) “Includes” / “means”: the ambiguity of definitional drafting

A central interpretive battleground was the definition’s mixed drafting: “house means … and where appropriate, includes …”. The Court relied on National Asset Management Authority v. Commissioner for Environmental Information [2015] IESC 51, [2015] 2 ILRM 165, [2015] 4 IR 626 (O’Donnell J.) to reject any simplistic rule that “includes” always expands a definition. The key takeaway applied here: “includes” is context-sensitive; it may be expansive, illustrative, clarificatory, or even exhaustive depending on how it functions in the provision.

The Court also cited classic authority on “includes”: Dilworth & Ors v. Commissioner of Stamps [1899] A.C. 99 (Lord Watson), recognising that “include” can either enlarge meaning or be tantamount to “mean and include”, depending on the Act’s context.

In discussing “includes”, the Court referenced comparative support found in O’Donnell J.’s reasoning, including the Canadian decision Allen v. Grenier (1997) 145 D.L.R. (4th) 286 as cited in NAMA.

(d) Interpreting “house” under the PDA 2000: guidance from a recent High Court decision

The Court considered Jennings v. An Bord Pleanála [2023] IEHC 14, where Holland J. examined whether student accommodation units could fall within the statutory definition of “house” in s.2(1) PDA 2000. While factually different, Jennings was influential because it:

• expressly recognised that s.2(1) extends “house” beyond ordinary meaning to apartments/flats and buildings designed for multiple dwellings; and
• identified the relevant genus as “dwelling” (with caution in applying ejusdem generis), reinforcing that “design” language is tethered to the dwelling concept.

(e) Subsequent amendments cannot construe earlier text

The Court relied on Cronin (Inspector of Taxes) v. Cork and County Property Company Limited [1986] I.R. 559 to reject interpretive arguments that would read the 2000 definition of “house” through the lens of later amendments or later legislative material.

(f) Other cited authorities (contextual mentions)

The judgment referenced constitutional/ECHR-conforming interpretation and severance principles (not determinative to outcome here) via: Dellway and ors. v. National Asset Management Agency and ors. [2011] IESC 14, [2011] 4 IR 1 and Re National Irish Bank Ltd. (No. 1) [1999] IESC 18, [1999] 3 IR 145.

It also noted the general proposition that identical terms can bear different meanings across statutes by reference to Clonres CLG v. An Bord Pleanála [2021] IEHC 303.

In the background to the NAMA interpretive approach, the Court mentioned the EU law interpretive setting in that case, including Fish Legal v. Information Commissioner (C-279/12) [2014] Q.B. 521 (CJEU), though EU law played no direct role in construing “house” here.

3.2 Legal Reasoning

(a) The statutory pivot: s.2(1) PDA 2000

The Court began with the text:

“house” means a building or part of a building which is being or has been occupied as a dwelling or was provided for use as a dwelling but has not been occupied, and where appropriate, includes a building which was designed for use as 2 or more dwellings or a flat, an apartment or other dwelling within such a building.

The parties agreed the structure was neither occupied nor provided for use as a dwelling at the sale date; the dispute turned on whether it nonetheless qualified because it was “designed for use as 2 or more dwellings”.

(b) The factual foundation: an incomplete “grey box”

On unchallenged evidence, the building was at “grey box” stage: an external shell with substantial works outstanding (services, fire safety, internal partitions, finishes, common areas). It was incapable of occupation at the material time.

The Court nevertheless held it was a “building” in ordinary terms (despite being incomplete), but that was not enough to satisfy the statutory definition of “house”.

(c) Why “designed for use” did not capture an uninhabitable, incomplete structure

The Council’s core submission was that “includes a building designed for use as 2 or more dwellings” brings within “house” any building that is designed as multi-unit residential, regardless of completion. The Court rejected this as an “overly literal” approach.

The Court’s reasoning can be expressed as four linked steps:

1. Unity of the definition: the “includes” limb must be read as part of the definition taken as a whole, not as a freestanding alternative test untethered from the dwelling/occupation/provision-for-use concept.
2. Structural coherence across the Act: the plaintiff highlighted that many PDA 2000 provisions use “house” in ways that presuppose a completed, occupiable unit (e.g. thresholds and obligations framed around numbers of “houses”). The Court accepted the interpretive force of this coherence argument.
3. Absence of rational basis for a “design-only” carve-out: the Court noted that other items expressly within the definition (flat, apartment, “other dwelling”) necessarily require completion; no persuasive rationale was advanced for treating “a building designed for 2 or more dwellings” as uniquely capable of covering an uncompleted shell.
4. Dwelling as the controlling idea: consistent with Jennings, the genus is “dwelling”, and “designed for use” must be read in a manner consistent with the building having become capable of occupation as such.

(d) Relationship to s.48(3A) PDA 2000 (as inserted in 2015)

The Court proceeded on the parties’ shared premise that “house” in s.48(3A) bears the s.2(1) meaning and that context did not displace it. On the Court’s construction, the 2014 transaction was not a sale of “houses” because, at that date, no “houses” existed in the statutory sense. That unlocked the plaintiff’s entitlement to the reduced contribution basis required by s.48(3A) (on the agreed parameters of the dispute), resulting in the agreed refund.

(e) Explanatory Memoranda: not helpful and not admissible as “legislative intent”

The plaintiff argued that an Explanatory Memorandum could assist with context/purpose. The Court rejected the submission in substance:

• It would not assist in any event given the Court’s conclusions on the text.
• More fundamentally, reliance on such materials risks importing subjective intent concerns proscribed by Crilly v. Farrington and reaffirmed in Heather Hill.
• In addition, per Cronin (Inspector of Taxes) v. Cork and County Property Company Limited, subsequent legislative developments cannot be used to construe the earlier definition enacted in 2000.

3.3 Impact

(a) Development contributions: timing and “house” status as a live litigation issue

The decision confirms that, for the purposes of the PDA 2000 definition, a residential unit (or multi-unit building) does not become a statutory “house” merely because planning permission exists and the structure is “designed” as dwellings. Practical consequences include:

• Contribution recalculation disputes: where contribution schemes change over time, developers/assignees may argue that s.48(3A) reductions apply if the relevant “houses” were not yet in existence (in the statutory sense) at earlier transaction dates asserted by planning authorities.
• Receivership and distressed-asset acquisitions: purchasers of partially completed residential developments may be better placed to seek reduced contributions where statutory criteria refer to “houses sold/unsold” and the earlier transaction was of a non-habitable shell.
• Administrative practice: planning authorities may need clearer internal criteria for determining when a unit has become a “house” (statutorily), especially where physical completion is phased and occupation readiness varies across units.

(b) Wider planning law: definitional discipline

The judgment is also a cautionary precedent about “ordinary language” versus “statutory language” in planning practice. Even familiar terms (“house”) can be technical in effect when embedded within cross-referenced statutory schemes that trigger financial liabilities and statutory benefits.

(c) Evidence and burden: the significance of uncontested construction-stage evidence

The finding that the building was not capable of occupation depended heavily on uncontroverted evidence. In future disputes, planning authorities contesting “house” status may need detailed inspection evidence and careful engagement with building-control, fire-safety, and services completion milestones.

4) Complex Concepts Simplified

4.1 What does “house” mean in this statute?

In everyday speech, a “house” is a home. Under s.2(1) PDA 2000, “house” is a technical term meaning (in essence) a building/part building that: (i) is/was occupied as a dwelling, or (ii) has been provided for use as a dwelling (even if not yet occupied). The definition also extends, “where appropriate”, to apartments/flats and buildings designed for multiple dwellings—but the Court held that this extension does not detach the concept from the idea of an occupiable “dwelling”.

4.2 Why does “includes” matter?

Drafters often use “includes” either to expand a category or to clarify what is already within it. Irish courts (per National Asset Management Authority v. Commissioner for Environmental Information and Dilworth & Ors v. Commissioner of Stamps) treat “includes” as context-dependent. Here, “includes” did not create a separate rule that “design alone” is enough.

4.3 What is “unjust enrichment” doing in a planning case?

The plaintiff had paid contributions calculated under the older scheme while maintaining it should have benefited from the later reduced scheme. If the Council was not entitled to retain the difference (because the statutory reduction mechanism applied), the plaintiff framed recovery as unjust enrichment: the Council would otherwise be enriched at the plaintiff’s expense without legal basis.

4.4 Why the Court was wary of Explanatory Memoranda

Explanatory Memoranda can resemble political/executive explanations rather than enacted law. Irish interpretive doctrine stresses that the enacted text is the authoritative expression of the Oireachtas. The Court also reiterated that later legislative materials cannot be used to reinterpret earlier statutory language.

5) Conclusion

[2026] IEHC 141 establishes that, under s.2(1) PDA 2000, a partially constructed apartment block that is not yet capable of occupation as a dwelling is not a statutory “house”, even if it was designed and permitted as a multi-dwelling development. The decision applies a disciplined language-in-context method (as articulated in Heather Hill Management Co. CLG & Anor v. An Bord Pleanála) and confirms that definitional “includes” wording does not automatically produce an expansive, design-only test. The practical result was a repayment order for €526,120.97, and the broader significance lies in how “house” is to be assessed at specific transactional and construction-time snapshots when statutory financial consequences depend on the answer.