Dublin County Council v. Tallaght Block Company Ltd.

Factual and Procedural Background

Company A (the local planning authority) obtained an order from the High Court on 7 November 1977 under section 27 of the Local Government (Planning and Development) Act 1976. The order restrained Company B, a concrete-block manufacturer, from:

• carrying out any unauthorised development on lands it occupied at Firhouse Road, The City;
• continuing any unauthorised use of those lands; and
• failing to remove specified materials, machinery and structures from the lands.

Evidence before the High Court consisted of affidavits for each side and oral testimony from two officers of Company B. The trial judge, Judge Costello, found that concrete-block manufacturing had ceased on the site in 1965 and did not recommence until 1973, after which Company B laid extensive new slabs, installed plant, erected fencing and constructed further buildings without planning permission. Company B’s various applications for permission to retain those works were refused by both the planning authority and An Bord Pleanála. When Company B failed to remove the development, Company A invoked section 27.

Company B appealed the High Court order to the Supreme Court, where Judge Hederman delivered judgment on 17 May 1983.

Legal Issues Presented

1. Whether the recommencement and expansion of concrete-block manufacturing after an eight-year hiatus constituted a “material change of use” requiring planning permission.
2. Whether the works carried out between 1973 and 1980 were “exempted development” under the 1967 and 1977 Planning Regulations.
3. Whether the High Court, on an application under section 27 of the 1976 Act, could itself decide if development was “exempted” or was obliged first to refer that question to An Bord Pleanála under section 5 of the 1963 Act.

Arguments of the Parties

Appellant's Arguments (Company B)

• On the appointed day (1 October 1964) part of the site was already being used for concrete-block production; resumption therefore did not amount to a material change of use.
• All works carried out from 1973 onward fell within exemptions in Class 16 of the 1967 Regulations and Class 17 (later Class 18) of the 1977 Regulations.
• Section 5 of the 1963 Act mandates that questions of “development” or “exempted development” be referred to An Bord Pleanála; therefore the High Court lacked jurisdiction to decide those questions in section 27 proceedings.

Respondent's Arguments (Company A)

• The cessation of block manufacturing from 1965 to 1973 amounted to abandonment; the 1973 resumption and subsequent intensification were therefore unauthorised material changes of use.
• The extensive new slabs, plant, fencing and buildings changed the external appearance of the premises and could not qualify as exempted development.
• Section 27 is a self-contained enforcement mechanism; the court could determine exemption issues without a prior section 5 reference.

Table of Precedents Cited

Court's Reasoning and Analysis

Judge Hederman accepted the High Court’s factual findings, including the eight-year cessation of production and the extensive post-1973 works. Applying Hartley, the Court held that the earlier industrial use had been abandoned, so its resumption constituted a new and material change of use requiring permission.

The Court rejected the claimed exemptions:

• Class 16 (1967 Regulations) applies only to works on land already occupied and used for an industrial process; when Company B began work in 1973 no such process was underway.
• Even if some exemptions were theoretically available, the new slabs, fencing and buildings altered the external appearance of the premises and therefore fell outside the classes relied upon.
• Storage exemptions in the 1967 and 1977 Regulations require products to be invisible from public roads; the trial judge’s finding that the products were clearly visible precluded reliance on those classes.

On jurisdiction, the Court adopted Cork Corporation v. O’Connell: section 27 proceedings are not frustrated by the absence of a section 5 reference; the High Court could either adjourn for such a reference or decide the matter itself. Judge Costello’s decision to determine the issue immediately was within his discretion and promoted expedition.

Consequently, Company B had carried out development and was making unauthorised use of the land without the requisite permission. Company A was therefore entitled to injunctive relief.

Holding and Implications

The appeal was dismissed; the High Court’s injunctions were affirmed.

Immediate Effect: Company B must cease unauthorised development and use, and remove specified structures and materials.

Broader Implications: The judgment reinforces that lengthy cessation of an industrial use can amount to abandonment, that intensification may itself be a material change of use, and that courts may, in section 27 enforcement actions, decide exemption questions without awaiting a section 5 determination—thereby strengthening the efficiency of planning control enforcement but setting no new doctrinal precedent beyond affirming existing principles.