Rooftop telecoms equipment on a commercial building

Rooftop telecoms mast planning in England usually runs through prior approval rather than a full planning application. Where the operator holds electronic communications code powers, Schedule 2 Part 16 of the General Permitted Development Order 2015 grants permitted development rights for antennas and associated apparatus, subject to size limits and to the council having the chance to approve siting and appearance first. As the building owner, you are not the applicant, but you are the one who signs the lease and lives with the conditions.

The council's powers here are narrower than most landlords assume. Health effects are not a ground for refusal where the exposure declaration is provided.

Permitted development for electronic communications apparatus

Part 16 Class A covers development by or on behalf of an electronic communications code operator for the purpose of the operator's network. On buildings that means antennas, dishes, equipment cabinets, poles and the cable runs between them.

The rights are hedged by dimensional limits: how many antenna systems, how tall above the roofline, how large a dish, and how much ground-level equipment housing. Those limits have been amended repeatedly, most recently in 2022 when the government raised several of the height and dimension thresholds to support network rollout. Do not work from a summary. Open the consolidated Part 16 text on legislation.gov.uk and read the class, the conditions in A.2 and A.3, and the interpretation paragraphs, because the limits differ depending on whether the building is 15 metres or more in height and whether the site sits on designated land.

Where the proposal exceeds a limit, the right falls away and a full planning application is needed. That changes the assessment completely, because the council can then refuse on visual amenity grounds without the Part 16 framing.

Prior approval and what the council can control

Prior approval under Part 16 is a determination of siting and appearance only. The operator submits a description of the development, a plan of the site, the exposure declaration and the fee, and the authority has 56 days to notify its determination. If it does not respond in time, the operator may proceed as described.

What the council can properly consider:

• Where on the roof the apparatus sits and how it relates to the parapet, plant screens and lift overruns
• The finish, colour and profile of the antennas, poles and cabinets
• Screening, shrouds and radome treatments
• Views from the street, from nearby conservation areas and from any listed building setting

What it cannot consider is the need for the network, the choice of operator, or alleged health effects from radio frequency emissions where the required declaration has been made. Objections on those grounds arrive on almost every scheme and carry no weight.

The exposure certificate the application must include

Part 16 requires the prior approval submission to include a declaration that the equipment, when operational, will comply with the International Commission on Non-Ionizing Radiation Protection public exposure guidelines. That declaration is the answer to health-based objections, and its absence is one of the few procedural grounds on which a submission genuinely fails.

Ask for a copy for your own records before the lease completes. If the installation is later altered, the declaration should be refreshed, and a landlord who has the original on file is in a better position when a tenant or a neighbour raises the point.

PlanScope produces an AI-assisted draft Telecommunications Compliance report covering the exposure position and the siting case. Councils usually expect a suitably qualified author for the radio frequency element, so professional review by a radio frequency engineer is strongly advised, and the draft should be reviewed before submission.

Siting, screening and visual impact from the street

The visual case is won on sightlines, not on plan drawings. A roof plan tells an officer nothing about whether the antennas will read as a cluster of grey poles above a parapet when seen from the pavement opposite.

Produce three things. A set of verified views from the nearest public vantage points, taken at eye level rather than from a neighbouring roof. A section through the parapet showing how much of each antenna projects above it. And a comparison of the proposed finish against the existing plant on the roof, because matching existing plant is the easiest argument to make.

Set back from the parapet wherever the radio plan allows. Every metre of setback reduces the visible length of the pole from street level, and operators will usually accept a modest setback if it is raised before the radio design is fixed rather than afterwards.

Conservation areas, listed buildings and Article 4

On designated land, which includes conservation areas, National Landscapes, National Parks, the Broads and World Heritage Sites, the Part 16 limits are tighter and the prior approval requirements are broader. Some installations that would be permitted elsewhere need a full application here.

Listed building consent is a separate consent and Part 16 does not touch it. Fixing apparatus to a listed building, or running cables through its fabric, needs consent under the Planning (Listed Buildings and Conservation Areas) Act 1990, and the works will be assessed against the duty in section 16 to have special regard to preserving the building and its features of special interest. The cable route is often the harder half of that application. Where the building is listed or in a sensitive setting, a Heritage Statement assessing the effect on significance should accompany the consent application.

An Article 4 direction can withdraw Part 16 rights in a defined area. Check the council's Article 4 register before assuming the prior approval route is open.

Structural loading, access and cable routes

Planning is rarely the constraint that stops a rooftop scheme. Structure and access are.

Get a structural appraisal of the roof before signing heads of terms. Antenna poles impose wind loading at height, and equipment cabinets concentrate dead load in places the original frame was not designed for. A Structural Survey that establishes the existing capacity gives you a basis for saying yes or no to the operator's design, and for charging properly for strengthening works.

Then look at the practical items the lease should cover: a safe route to the roof for maintenance, working at height provisions, whether the operator needs 24-hour access, where the power supply and meter sit, fire stopping at every penetration, and how the cable tray interacts with your own plant replacement programme. Roof warranties are the item most often forgotten. A penetration made without the roofing contractor's involvement can void a 20-year warranty, and the cost of that lands on you rather than on the operator.

Conditions and the removal obligation

Part 16 carries its own conditions, and the one that matters to a landlord is the requirement that apparatus is removed from the land as soon as reasonably practicable after it is no longer required for electronic communications purposes, with the land restored to its previous condition.

That obligation sits on the operator in planning terms. It does not automatically translate into a lease covenant. Landlords who rely on the Order find that the planning obligation is difficult to enforce in practice and that the Electronic Communications Code makes removal slower than expected. Write the reinstatement standard into the lease, take a schedule of condition photographs before installation, and specify who makes good the roof covering and the parapet.

An illustrative sequence for a six-storey office block. Heads of terms agreed in January, structural appraisal in February identifying strengthening to two roof beams, prior approval submitted in March with the exposure declaration and three verified views, determination inside the 56 days with a condition on finish colour, installation in June under a licence for alterations, and a schedule of condition attached to the lease. The item that nearly derailed it was the roof warranty, resolved by using the original roofing contractor for the penetrations.

Before you agree anything, browse the 66 PlanScope report types by category to see what a rooftop installation on a sensitive building is likely to need.

This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.