Broadband Installation Guide 2026: What to Expect

Most full fibre (FTTP) broadband installations take 1 to 2 weeks from order to activation and require an engineer visit of 2 to 4 hours. The engineer installs an ONT (Optical Network Terminal) on an outside wall and runs a fibre cable to your router. FTTC broadband is usually self-install — you simply plug in the router when it arrives. New builds since 2022 must have FTTP pre-installed.

FTTP Full Fibre Installation: What the Engineer Does

Full fibre broadband (FTTP — Fibre to the Premises) delivers a fibre optic cable directly to your home. This gives you faster, more reliable speeds than older FTTC technology, which uses fibre only to a street cabinet and then copper wire to your door. FTTP now covers 78% of UK premises as of 2025.

When your installation date arrives, an engineer — usually from Openreach (the national infrastructure arm behind providers such as BT, Sky, TalkTalk, and Vodafone) or from the altnet's own team — will arrive at your property. The visit typically lasts 2 to 4 hours. The engineer will: run a fibre cable from the nearest street distribution point to your home; install an ONT (Optical Network Terminal) on an outside or inside wall near a suitable entry point; connect the fibre cable to the ONT; test the connection and signal strength; and set up your router. The ONT is a small white box roughly the size of a paperback book. Your Wi-Fi router connects to it via an ethernet cable. You do not need to be a technical expert — the engineer handles everything and will show you how to connect your devices before leaving.

Timelines and Preparing Your Home

For Openreach-based FTTP installations, the standard timeline from order to activation is 1 to 2 weeks. Some providers — particularly altnets with their own networks, such as Hyperoptic and Community Fibre — can sometimes install within a few days if you are in a building they have already wired. Rural providers such as Gigaclear may have longer lead times of 2 to 4 weeks depending on how much external groundwork is required to reach your property.

To prepare for the installation day: ensure someone aged 18 or over is home for the full appointment window (usually a 4-hour slot); clear access to the point where the cable will enter your home (usually a wall near a window or where your phone line enters); decide in advance where you want the ONT placed — this determines where your router will sit; and check whether your preferred router location has a power socket nearby. If your property has a complicated entry point (e.g. thick walls, an attic, or a basement), mention this when booking — the engineer may need additional equipment.

New Builds, Wayleave, and FTTC Self-Install

Since December 2022, new build homes in England must have gigabit-capable (full fibre) broadband installed as part of the building regulations. This means if you move into a new build home, FTTP infrastructure should already be in place — you simply need to choose a provider and activate the service, often without a full engineer visit. The developer is required to install the physical infrastructure; your chosen provider then activates the service on the existing cables.

Wayleave is a legal agreement required when a provider needs to install cables across land or property not owned by you — for example, across a landlord's building or shared communal land. If wayleave is needed, the installation process can take longer, as the provider must obtain consent from the relevant landowner. Gigaclear and other rural providers frequently encounter this when building out to isolated properties. If wayleave is required, your provider will notify you and advise on the expected delay. FTTC broadband (Fibre to the Cabinet, the older technology used where FTTP is not yet available) is typically a self-install service: your router arrives by post and you plug it into the existing phone socket. No engineer visit is needed in most cases. FTTC delivers speeds of up to 80 Mbps on the standard Openreach network.

What Happens on Activation Day

Activation day is when your broadband service goes live. For a new FTTP installation where an engineer has already visited, activation is usually automatic — the service activates at a specific time, typically between 8am and 6pm on the agreed date. You may need to restart your router to pick up the new connection.

If you are switching from an existing broadband service, your old service will stop at the same time your new service activates. On the Openreach network using One Touch Switch, downtime is typically just a few hours. Check that your router's lights indicate a live connection — usually a solid white or green light. If the connection does not activate by the end of the agreed day, contact your new provider's customer service team. Under Ofcom's automatic compensation scheme, providers must pay £9.33 per day for delayed activation. If you have home smart devices, security systems, or work-from-home equipment, plan around the activation window to minimise disruption.

Compare Broadband Deals at Your Address

Ready to get full fibre installed? Enter your postcode on CompareFibre to see every provider available at your address — including local altnets you may not have heard of. Full fibre (FTTP) is now available to 78% of UK premises and delivers speeds up to 8 Gbps. Compare deals, check installation timelines, and switch today.

Frequently Asked Questions

How long does a full fibre FTTP installation take?

From order to activation, a standard Openreach FTTP installation takes 1 to 2 weeks. The engineer visit itself lasts 2 to 4 hours. Altnet providers with pre-wired buildings (such as Hyperoptic in apartment blocks) can sometimes install within a few days. Rural providers may take longer if groundwork is needed.

Do I need to be home for the broadband installation?

Yes — for an FTTP engineer installation, someone aged 18 or over must be present at the property for the duration of the appointment. Appointment windows are typically 4 hours. For FTTC self-install (router only), no one needs to be home as equipment is delivered by post.

What is an ONT and where does it go?

An ONT (Optical Network Terminal) is the box the engineer installs to connect the incoming fibre cable to your router. It is typically mounted on an internal or external wall near where the fibre enters your home. Your router then plugs into the ONT via a short ethernet cable. The ONT is usually about the size of a paperback book.

Do new build homes need a broadband installation?

Since December 2022, new build homes in England must have gigabit-capable (FTTP) infrastructure installed under building regulations. This means the physical cabling is already in place — you just need to choose a provider and activate the service, often without a full engineer visit.

Related Guides

How to Switch Broadband: The Complete Guide · Broadband Costs Explained (2026) · Best Broadband Deals with No Contract (2026) · April 2026 Broadband Price Rises Explained · Average Broadband Speed in the UK (2026)

Methodology

This guide is based on publicly available data from Ofcom, provider websites, and independent sources including ISPreview.co.uk, Thinkbroadband, and Point Topic. Pricing, speeds, and availability were verified in March 2026 and are subject to change. CompareFibre is editorially independent — providers do not pay for placement or influence our recommendations.