Riverfront buildings and red tiled roofs in Porto, Portugal, used as regional context
Service guide

House and apartment rewiring in Porto

Plan electrical work around the way your property will be used.

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Home/Services/Rewiring & renovations

Understand the work

A renovation is an opportunity to plan electrical capacity, socket positions and lighting before walls are finished. Rewiring should begin with an assessment of the existing installation and the intended use of every room, rather than an assumption that all older properties need the same work.

The project brief should distinguish retained circuits from new work, identify access and making-good responsibilities, and explain any disruption. In an occupied home, phasing and the ability to keep essential areas usable need discussing before a programme is agreed.

A room during renovation, with wiring points exposed before the walls are finished

A new kitchen without reopening every finished room

For a kitchen project, bring the proposed appliance positions and identify cabinets, floors and walls you hope to retain. Separate existing equipment from new additions. This gives the assessment a practical starting point without assuming that the present circuits can support the new plan.

Ask the project team to explain which wiring would be retained, where access is needed and what cannot be confirmed until the installation is assessed. Agree how discoveries affecting the scope will be discussed before finishes are disturbed.

Plan the sequence around an occupied home

A room-by-room brief should say where people will live and work during the project. Identify refrigeration, communications and any essential equipment that need advance planning. Explain access restrictions and who can authorise a change while work is underway.

Ask the appointed contractor to set out expected interruptions and whether phasing is feasible for the assessed installation. Neither the number of rooms nor the age of the property is enough to promise a programme or uninterrupted power.

Compare a defined result, not just a rewire label

When comparing proposals, check that they cover the same rooms, points, retained circuits, access work and testing. Distinguish a complete electrical redesign from targeted alterations. A short description such as “rewire apartment” leaves too much room for different assumptions.

Ask what drawings, circuit identification and completion information will be supplied, and who handles changes requested after the layout is agreed. Keep this alongside the separate arrangements for plastering, decoration and other trades.

What to discuss in the scope

  • Assessment for partial or full rewiring
  • Circuit planning for kitchens and renovated rooms
  • Socket and lighting layouts
  • Coordination with other renovation trades

Before an assessment

  • Bring a floor plan or a room-by-room list of changes.
  • List planned high-demand appliances and equipment.
  • State whether the property will remain occupied.
  • Identify finishes or original features that need protecting.
Safety first. These pages help you describe a job; they do not diagnose faults or provide DIY electrical instructions. Do not open electrical fittings or panels. If there is smoke, fire, injury or immediate danger, move away and contact the emergency services. Porto Electric is not an emergency contact.

Questions worth asking

Can only part of a property be rewired?

Sometimes, but the suitability of retained wiring and its connection to new work must be assessed. The extent should follow the condition and design of the installation.

Is decorating included?

Do not assume it is. Before appointing a contractor, ask the written scope to identify chasing, plaster repairs, painting and removal of waste separately.

Should appliance locations be decided before the electrical scope?

Provide the best available layout and product information early. Mark anything undecided so the electrician and other trades can identify decisions that affect routes and points before finishes are completed.

Can the work be planned around someone working from home?

Explain the rooms, times and equipment involved. Discuss feasibility and interruption arrangements with the appointed contractor; this website cannot promise that any circuit or room will remain usable.

What should happen if the assessment finds more work than expected?

Ask for the finding, its implications and the proposed change to be explained. Agree who may authorise additional work and how changes to the written scope will be recorded.

Related electrical work

General planning information, not a diagnosis or an electrical design. These guides have not been reviewed by a qualified electrical professional. Service capability, coverage and provider details remain unconfirmed.

Where is your property?

Access and project details vary. Use a location guide to prepare the right questions.

Let’s talk about your electrical plans.

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