How is optical fibre installed in a residential building?

The meeting approved the contract, the signature is complete, and now comes the question that interests both the committee and neighbours most: what does the actual installation involve? Will there be demolition, drilling, will technicians leave a mess, and how long will it all take? This article describes the step-by-step process of installing fibre optics in an apartment building as it actually happens.

Technical inspection: the first step before implementation

Before technicians with tools even arrive, a technical inspection is carried out in the building. The technician inspects the utility room, risers and corridors to determine the route for the optical fibre, where a new distribution board will be needed and whether existing floor penetrations can be used. The result is a specific work plan submitted to the committee for approval before the installation date.

How fibre optic cable gets into a building

Optical fibre is usually brought into the building from the nearest network point in the street, either via an existing underground conduit or by a short run along the façade to the nearest entrance. Inside the building, the fibre is routed to the technical room or basement, where the main distribution cabinet is installed; from there, the cabling continues to the individual floors.

Risers and internal distribution systems

For internal distribution within the building, existing risers and inter-floor penetrations currently carrying electrical or low-voltage cabling are used in almost all cases. The new fibre is simply added to them. Only exceptionally, when a riser is missing or completely full, is it necessary to create a new, minimal penetration, and even this is routed through common areas, not through flats.

Drilling and work in common areas

Drilling mainly concerns floor penetrations and fixing trunking or pipes along risers in communal corridors. Individual flats are only accessed if the owner explicitly requests immediate connection and internal wiring to a socket. Upon completion, technicians will clear the work area, remove packaging materials, and cover visible routes with trunking so the corridor looks as it did before installation.

How long the installation takes

The timeframe consists of two phases. The actual work in the building's common areas, bringing in the fibre, installing the distribution board, laying main routes: typically takes a few days. Commissioning and setting up the network for the entire building then proceeds concurrently or shortly after completion of the construction phase. Individual flats requiring immediate connection are activated within tens of minutes per flat. Overall, from signing the contract to having functional internet in the building usually takes several weeks, most of the time is spent scheduling the appointment, not the on-site work itself.

What a house actually costs

Under a long-term contract (typically for three years or more), the supplier covers the cost of internal distribution within the building at their own expense, meaning the building invests nothing in installing the infrastructure itself. The condition is precisely the length of the commitment, which must be voted on by the committee at a meeting. For shorter or non-binding contracts, the scope and payment for work must be agreed individually. It is always advisable to have this confirmed in writing directly in the contract, not just promised verbally.

What to do if you need connection immediately

If the shared distribution lines in the building are not yet complete but a specific flat requires internet as soon as possible, it is possible to arrange a temporary or priority connection for that single flat before the works across the entire building are finished. It is worth mentioning this during the technical inspection so that the technician can take it into account in the work plan.

How to prepare for installation

To ensure everything runs smoothly, the building's owners' association committee simply needs to resolve a few organisational matters in advance:

• Ensure access to the technical room and common areas. - technicians require keys or accompaniment by the caretaker on the agreed date
• Inform neighbours of the date - A notice on the bulletin board with the date and expected scope of work is sufficient, so technicians do not surprise anyone in the hallway.
• Find out in advance who wants to connect the flat immediately. - the supplier then schedules this part of the work immediately and does not need to return to the property a second time.