Full fibre in listed buildings and conservation areas

The council will want to know exactly what gets fixed to the building. Openreach describes its standard full fibre installation like this (checked October 2026):

The engineer agrees with you where the hole should go and asks you to sign a permission form before any drilling or digging. Other networks fit similar kit: Gigaclear fits a wall box outside and another inside.

On a listed building, every item in that table is something fixed to, or cut into, the fabric of the building. Under the Planning (Listed Buildings and Conservation Areas) Act 1990, any object or structure fixed to a listed building is treated as part of it. And government planning guidance says listing covers the whole building, inside and out, unless the list entry says otherwise. So an internal box on a panelled wall can matter as much as an external one on a stone front.

Our guides to what happens at a full fibre installation and the ONT and what it does cover a standard visit in detail.

Listed building consent is a separate permission from planning permission, and it can be needed even when planning permission isn't.

A conservation area is a part of a council's area that it has designated for its special architectural or historic interest, where the character or appearance is worth preserving or enhancing. The designation is registered as a local land charge. When councils make planning decisions there, the law says they must pay special attention to preserving or enhancing that character.

For broadband, the extra limits mainly apply to the network's equipment in the street rather than to the line into your home:

• Overhead cables, cabinets and poles. In a conservation area, a network operator may put fixed-line broadband lines, cabinets or poles above ground only after giving the council one month's written notice.
• Your own connection. No notice is needed for the "service line", the cable that serves an individual property.
• Protected land. Planning law treats conservation areas as "article 2(3) land", a group that also includes National Parks, the Broads, World Heritage Sites and Areas of Outstanding Natural Beauty, where some kinds of telecoms apparatus face extra limits. Fixed-line broadband poles, cabinets and lines there are exempt from the council's separate "prior approval" step.

Separate rules apply near the most important listed buildings. Operators need to have given notice, or applied for planning permission or prior approval, before installing apparatus near grade I or grade II* buildings in England. Broadband lines, cabinets and poles near (or, for a service line, fixed to) a grade I building need one month's written notice to the council.

The operator gives these notices, not you. If a new pole is planned near you, our guide to new broadband poles and how to object explains that process. If your home is in a conservation area but isn't listed, still talk to the engineer about where the box goes.

The network gives the formal notices about its street equipment, but the networks we checked expect the homeowner to raise listed building consent. Here's what each says:

BDUK's guidance puts the duty to consult the council on the broadband supplier where work in or on a heritage asset can't be avoided, so it's reasonable to expect the network to be involved. But we found nothing saying networks apply for listed building consent on a householder's behalf. Ask yours directly: "Who applies, and what drawings or details will you give me for the application?"

Two situations change the picture:

• You rent. Openreach says renters need the landlord's permission for any drilling, inside or out. If the building is listed, consent for works to it is something to settle with your landlord. Our guide for renters getting broadband covers the rest.
• You live in a flat. Where a court gives an operator access to a block whose landlord hasn't responded to repeated requests, the regulations say the operator must obtain any necessary consents, including listed building consent. Our guide to full fibre in a block of flats explains that route.

A wayleave (permission from a landowner for the network's equipment) is a different thing from listed building consent, and you may need both. Our guide to broadband wayleaves covers who signs one.

GOV.UK says to contact your local planning authority through your council to find out whether a project needs permission. Describe the actual works, not just "can I get broadband?". Before you call, ask the network or provider what it plans and note:

• where the fibre would arrive: underground, or overhead from a pole;
• where the outside box would go, and whether it could go inside instead;
• where the hole would pass through the wall, and what that wall is made of;
• how the cable would run inside, and where the ONT and router would sit.

If consent is needed, the application goes to the local planning authority. The 1990 Act says it must include a plan identifying the building and drawings describing the works. Government guidance says there's no fee for a listed building consent application. If the council's view is that the work won't affect the building's character, the Certificate of Lawfulness route described above gives you that in writing.

Not sure whether your home is listed? BDUK tells suppliers to check the National Heritage List for England and the council's Historic Environment Record.

Where the work can be seen from a listed building or conservation area, the network's permitted development rights already require it to be sited and designed to keep its visual impact as low as practicable. Options worth discussing:

• An internal box instead of an external one. Openreach has done this, as the Saltaire case below shows.
• The cable route. Don't sign the engineer's permission form until the route matches what the council has seen.
• A less visible elevation. A side or rear wall may matter less than the front, but only the council can say what's acceptable for your building.

Networks may charge for routes you choose. Gigaclear says specific route requests may need a contribution from you, so ask before committing.

Three things can add cost or time:

• Surveys and contributions. Gigaclear stops to survey a non-standard install, and only in a small number of cases discusses a customer contribution. Trooli surveys "Non Duct Lead In" homes and agrees any extra cost with you before work starts. Our guides to how a Gigaclear installation works and Trooli installations go into each network's process.
• Waiting for permission. Openreach lists permissions from councils or property owners, and sometimes wayleaves, among the most common reasons for full fibre delays, along with jobs that need specialist engineers. It doesn't give timescales.
• The consent application. There's no fee for listed building consent itself, though your time and any drawings are a cost.

Because of the timing, don't give notice on your current broadband until the new connection is confirmed. If you switch using One Touch Switch, you contact only your new provider. Your current provider must send you the switching information, including any early-termination charges, so you can check the cost before the switch date. Our guide to switching broadband providers and our guide to how long installation takes cover the timings.

In England, building regulations normally require "high-speed-ready" infrastructure, such as ducting for a future connection, when an existing home undergoes major renovation. Approved Document R exempts listed buildings and conservation-area buildings where complying would unacceptably alter their character or appearance.

If you're already applying for consent for building work, ask the council about a broadband cable route at the same time. Our guide to broadband during a renovation covers where to put the line, Ethernet and router.

1. Check the status. Confirm with your council whether the building is listed, at what grade, and whether it's in a conservation area.
2. Check what's available. Compare deals at your postcode to see what's on offer at your address. Our fibre broadband deals page and the broadband providers list show what each sells.
3. Tell the provider when you order. Say the building is listed or in a conservation area, and ask whether that makes it a non-standard install.
4. Get the planned works in writing. Box position, entry point, cable route and ONT location.
5. Ask the council. Find out whether consent, or a Certificate of Lawfulness of Proposed Works, is needed, and apply before any work.
6. Sort other permissions. Landlord or freeholder consent if you rent or own a flat, and a wayleave if the cable crosses someone else's land.
7. Keep your current service until the new line is live.
8. On the day, check the route matches what was agreed before signing the engineer's permission form.

If the council and the network can't agree a route, or the cost of a non-standard install is too high, you still have options. Different networks reach different streets, so it's worth seeing which reach your area through broadband deals by area or on the Gigaclear and Quickline provider pages.

Wireless options avoid a new cable but bring their own fixings. An outdoor antenna or satellite dish is another object fixed to the building, so the same character test applies. Our guide to switching to 4G, 5G or satellite broadband compares those routes.