Northern Ireland telecoms planning rules could change substantially under proposals to allow new mobile masts up to 30 metres outside designated areas, with councils normally given 56 days to deal with prior approval.
The Department for Infrastructure launched the consultation on 1st October 2026. New ground-based masts currently require full planning permission in Northern Ireland; the proposed route would focus council scrutiny on siting and appearance.
For operators, landowners and neighbouring residents, this would change both the application process and the timetable for responding. These are proposals for Northern Ireland only, not rights already available. Consultation closes at 5:00 pm on 23rd December 2026.
30-metre masts at the centre of Northern Ireland telecoms planning proposals
DfI considers Northern Ireland’s permitted development regime for network operators the most restrictive in the UK. The review concerns Part 18 of the Schedule to the Planning (General Permitted Development) Order (Northern Ireland) 2015.
Its central proposal would give electronic communications code operators a permitted development right for new ground-based masts up to 30 metres above ground level, outside designated areas and subject to prior approval.
That would remove the need for a full planning application for qualifying installations. It would still require operators to satisfy the detailed limitations and follow the prescribed procedure before starting work.
Announcing the Northern Ireland telecoms planning consultation, Infrastructure Minister Liz Kimmins said: “I am committed to reducing unnecessary regulatory burdens where it is appropriate to do so.”
The distinction between jurisdictions matters. Planning Geek’s Part 16 communications guidance covers England. England’s Part 16 and Northern Ireland’s Part 18 are separate statutory regimes, even where proposed mast heights look similar.
Northern Ireland telecoms planning: how the 56-day process would work
All new ground-based masts qualifying for the proposed right would face prior approval for siting and appearance. DfI proposes following the Scottish procedure, with 56 days from receipt of a valid application for the council to decide whether prior approval is required and, where required, whether to grant it.
The council and developer could agree a longer period. A refusal would prevent the proposal proceeding through this permitted development route; the operator might then need a full planning application.
The draft requires identifying information, a description of the development and its dimensions, a location plan and drawings explaining its appearance and position. Where an antenna is involved, an ICNIRP declaration would also be required.
The deadline would carry consequences. Annex A includes circumstances in which development could proceed after the prescribed period expires without the necessary council notification. Councils would therefore need reliable validation, consultation and decision procedures, rather than treating 56 days as an aspirational target.
For neighbours, the practical implication is to engage promptly and concentrate representations on the proposed siting and appearance. The consultation offers an opportunity to test whether the procedure provides an adequate chance to do that.
Would prior approval carry an application fee?
The Northern Ireland telecoms planning consultation leaves the fee level open. DfI asks whether Part 18 prior approval applications should attract a charge and, if so, what amount would be appropriate.
The impact assessment anticipates a fee, but the consultation expressly leaves the principle and level open for responses. Operators should not budget on the assumption that the proposed process would be free.
For councils, the question is whether a charge would cover the work involved in a shorter, more tightly defined assessment. Evidence about actual processing costs would be more useful than simply arguing for or against charging.
Existing masts could become substantially taller
The Northern Ireland telecoms planning review also proposes wider rights to alter or replace existing masts, supporting upgrades and greater use of shared sites.
- Existing masts no higher than 30 metres could increase by up to 50 per cent of the original mast’s height
- Masts above 30 metres but no higher than 50 metres could increase to a maximum overall height of 50 metres
- Masts already above 50 metres could increase by up to 20 per cent of the original mast’s height
A 30-metre original mast could therefore reach 45 metres under the proposed first allowance, subject to the other requirements. The second allowance is a 50-metre overall ceiling, not permission to add another 50 metres.
Width could increase by two metres or half the original width, whichever is greater. That recognises that additional equipment and taller structures may need wider supporting infrastructure.
The existing six-metre relocation threshold would remain. DfI also seeks views on adding an “as close as reasonably practicable” test for replacement masts. The precise wording matters: this should not be read as a settled, unrestricted right to move a mast further away.
Larger apparatus on buildings
The proposals would also expand allowances for apparatus on buildings or other structures, excluding ground-based masts. The headline limits would be eight metres for relevant apparatus on buildings below 15 metres and ten metres on buildings above 15 metres. The draft wording does not clearly resolve the boundary case of a building exactly 15 metres high, which warrants clarification.
For alterations or replacements, the draft also accommodates the existing apparatus height where greater. These provisions concern specified apparatus and supporting housing or cabinets; antennas and equipment housing have their own detailed limitations.
For building owners and planning agents, measuring the building and identifying each component would remain essential. A general reference to an eight- or ten-metre allowance would not establish that an entire rooftop installation qualified.
Emergency-use extension remains unsettled
The current emergency-use period is 18 months, with apparatus to be removed before it expires. The industry has suggested 36 months to allow time to find a permanent site, complete administration and procure and install replacement equipment.
However, the Regulatory Impact Assessment says no current change is proposed before consultation. Question 9 asks whether the existing period is sufficient. We should therefore treat 36 months as a suggestion being explored, rather than an agreed extension or an existing entitlement.
Designated areas and listed buildings retain safeguards
The proposed new 30-metre mast right would apply outside designated areas. DfI says existing protections for conservation areas, Areas of Outstanding Natural Beauty and Areas of Special Scientific Interest would be maintained through specific limitations and conditions.
Restrictions affecting Sites of Archaeological Interest and World Heritage Sites would remain. Required listed building consent would still need to have been granted before relevant permitted development rights could be exercised.
The consultation also asks whether changes to existing masts and other apparatus in designated areas should be subject to prior approval. Heritage and environmental groups therefore have a specific procedural question to address, alongside the dimensional proposals.
Councils would retain Article 4 powers
DfI highlights councils’ existing ability to withdraw particular permitted development rights in specified areas through an Article 4 Direction. The impact assessment envisages exceptional circumstances where material harm in a locality is clearly demonstrated.
Article 4 would remain a local safeguard within Northern Ireland telecoms planning, rather than an automatic restriction everywhere.
Any Northern Ireland Direction would operate under its own GPDO, and should not be confused with English Article 4 arrangements.
What the changes could mean in practice
DfI says telecommunications applications generally achieve high approval rates. Its impact assessment identifies the time taken to secure consent as the main deployment constraint, rather than the likelihood of refusal.
The intended gain is quicker delivery and reduced administration. The assessment does not quantify the financial benefits, so there is no sound basis here for promising a particular saving per mast or a guaranteed increase in landowner income.
Operators and site providers could gain more flexibility to upgrade existing locations. Councils could receive fewer full applications but would need to handle a new prior approval workload. Residents would still have a stake in how installations sit within their surroundings.
Our recent Fulbourn 5G mast appeal report illustrates the importance of siting and heritage evidence in England. It is useful context, not authority for applying English rules in Northern Ireland.
Respond by 23rd December, then await the outcome
Responses to the Northern Ireland telecoms planning consultation must reach DfI by 5:00 pm on 23rd December 2026. The official consultation page provides the online response route, email and postal details.
Read the consultation document hosted on Planning Geek alongside the locally hosted Regulatory Impact Assessment. The Department also provides the official consultation PDF and official impact assessment.
DfI will consider responses before settling its approach. Any new rights would need the necessary legislative changes and a commencement date. Until then, operators and advisers must continue to work within the current Northern Ireland rules.
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