New-build broadband: what to do when your address isn’t recognised or shows “no service”

A broadband checker failing to find your new-build address doesn’t prove that your home has no broadband network. It may not recognise the address yet, the network may not be ready to take orders, or the provider you checked may not sell service over the network at your property.

Those are different problems, and they need different next steps. First work out which result you’re seeing. Then contact the organisation that can actually check or correct it.

Start with the message on the checker

“Address not found” and “no service” aren’t interchangeable messages. One may mean the checker cannot match your property. The other may mean it has found the address but cannot offer an orderable service there. Neither result, on its own, tells you exactly what has gone wrong.

If the checker can’t find your address

Start with the address itself. A new home can appear under a different format from the one you expect, especially on a development where properties have plot numbers, building names or flat numbers.

Use the official address, not just the plot number

Ask the developer or sales office for the postal address and postcode that have been assigned to your home. If you’ve moved in, check an official letter or council-tax document and use the address shown there. Try the house number as well as the building or property name, and include the flat number if you live in a block.

Don’t place an order using a neighbour’s address or the nearest result just to get past a checker. The order would be attached to the wrong property, which can cause problems with installation and later support.

Check the postal address record

Royal Mail’s Postcode Finder lets you check whether an address appears in its postal records. Royal Mail says a new-build address may not yet be in its database. It also asks people not to report a property before it is due to receive mail: if you haven’t moved in yet, its current guidance says to report it no more than two weeks before moving.

If you have moved in and still can’t find the address, use Royal Mail’s missing or incorrect address form. Royal Mail says it can update an incomplete or missing postal address. If the problem is the street name, property name or numbering, it directs customers to their local authority instead.

The postal address is only one part of the picture. Broadband networks and providers also keep records that link an address to a connection. A correction to a postal record may help, but it doesn’t confirm that fibre or another broadband network has been built to the property or is ready for orders.

If you only have a plot number

Ask the developer which network or networks were installed and whether your plot has a confirmed postal address. If the developer can’t confirm that the council has assigned an address, contact the local authority’s street naming and numbering team. That is the team responsible for official street and property naming and numbering in its area.

Once you have an official address, check it with Royal Mail if needed, then try the network’s availability checker again. Don’t assume that one missing address record explains every failed checker. The network may have a separate record or a separate issue with the connection to your plot.

If your address appears but the result says “no service”

Now the question is not just whether the address exists. You need to find out whether a network reaches your property, whether it is ready to take orders and whether the provider you checked sells a service over it.

Check the network, not only one provider

Broadband providers don’t all use the same network. A provider’s “no service” result means that provider can’t currently offer you a package through the information or network it checked. It doesn’t automatically rule out every other network or provider.

Use the availability checker for the network you think serves the development. For example, Openreach’s fibre checker gives address-specific information about its own network. If you’ve spoken to a provider and still can’t place an order, Openreach’s new-build help says you can contact it. If you already have an order and there’s a problem with it, Openreach says to contact the provider handling the order first.

If another network serves the estate, check that network’s own guidance. CityFibre says new-estate installation can depend on the highways being released to the council. Its availability guidance explains that visible construction can finish before network testing, activation and provider onboarding are complete. Those are CityFibre’s requirements, not a timetable or rule for every network.

Some networks sell wholesale access to retail providers, while others also sell broadband directly. If a network is available but the provider you tried doesn’t use it, look for the network’s list of retail providers. Don’t assume every broadband brand can sell service over every network.

Treat national checkers as a starting point

Ofcom’s broadband checker uses Ordnance Survey data as its base address dataset, which Ofcom says it updates in its checker twice a year. Ofcom also says that no predicted result doesn’t necessarily mean broadband is unavailable, and some smaller networks may not be included.

The reverse is important too. A checker showing service in your area doesn’t guarantee that a provider can take an order for your particular property. Ofcom says local operational issues can prevent service at a specific address, even where a checker suggests it is available. If the results disagree, ask the provider what is stopping the order and which network record it has checked.

Your neighbour’s result can be useful context, but it isn’t proof that your property should have the same service. A network may have completed work on one part of a street or development before another. The provider or network needs to check the record for your own address.

If there’s already an ONT on the wall

An ONT in your home is a useful clue, but it doesn’t confirm that a broadband package is ready to order or that a service has been activated. The equipment can be installed before the network is ready for customers, or before a provider has completed the order.

What is an ONT?

An optical network terminal, or ONT, is the device that turns the fibre connection entering a home into an Ethernet connection for a router. An ONT can be installed before a broadband service is ready to order or has been activated.

If an ONT is present but you can’t place an order, check the network’s address result and ask the provider which step is incomplete. If you’ve already ordered, contact the provider first. It can check the order and raise a network fault or record query if needed.

For a closer look at the equipment and how it connects to a router, see our guide to what an ONT is and how it works.

What to have ready before you contact anyone

Give the organisation enough detail to check the right home and the right record. Have these details to hand:

• The full address and postcode, including the building and flat number if relevant.
• The plot number and development name, if it’s a new estate.
• The exact wording shown by the checker, and the name of the checker you used.
• Whether the address appears in Royal Mail’s Postcode Finder and the relevant network checker.
• Whether an ONT or other broadband connection equipment is already installed.
• Any order number or reference if you’ve already tried to buy a package.

Then ask a direct question: “Can you confirm whether my address is in your system, which network you checked, and what is stopping an order?” If the issue needs another organisation, ask who will raise it, whether you need to contact them yourself and for a reference number. That gives you a next step you can follow up, rather than sending the same enquiry to several providers without knowing what needs to change.

The answer should identify a practical action. “It isn’t available” doesn’t tell you whether the address needs correcting, the network needs to finish work or the provider simply doesn’t sell over that network.

What if you need internet before the issue is fixed?

If you’ve moved in and need a connection straight away, check whether another fixed network or provider can serve your address. If not, a mobile hotspot or mobile broadband service may be a temporary option, but check signal inside the property, data limits and contract terms before relying on it.

Don’t sign up to a long contract based only on a postcode-level result if the provider hasn’t confirmed it can serve your actual home. Ask it to confirm the address and installation requirements before you commit.

The important point

A failed broadband checker doesn’t tell you, by itself, whether the problem is the address, the network or the provider. Find out which result you have first. Then follow the route for that issue instead of repeating the same search across providers without knowing what needs to change.

Once your address is recognised and a provider confirms it can serve your property, you can compare broadband packages. The comparison checker is postcode-led, so confirm the full address and installation details with the provider before ordering.

New-build broadband Frequently asked questions