Rewiring Victorian and Edwardian Houses in Clapham

Clapham has a remarkable stock of Victorian and Edwardian properties — terraces, conversions and mansion flats with beautiful period features. But many have original or early electrical installations that are long past their safe working life.

How Old Wiring Becomes a Problem

Rubber-insulated cables, which were standard from the 1920s through to the 1960s, become brittle over time. The insulation cracks and crumbles, exposing live conductors inside walls and ceilings. Lead-sheathed wiring (pre-war) and vulcanised rubber (VIR) wiring present the same issue. This is a serious fire risk that's invisible until something goes wrong.

If your property has a consumer unit with ceramic fuses, bakelite switches and round-pin sockets, the wiring is almost certainly original. An EICR will confirm this.

Signs Your Property Needs Rewiring

• Rubber or fabric-covered cables visible in the consumer unit or loft
• Round-pin sockets or light switches with no earth connection
• Ceramic fuse holders in the consumer unit
• Repeated unexplained tripping
• EICR returned as unsatisfactory citing aged wiring
• Hot or discoloured sockets and switches

What a Rewire Involves in a Victorian Property

Victorian and Edwardian properties present specific challenges for rewiring — thick plaster, lath and plaster ceilings, solid floors and often complex layouts with basement kitchens. Our approach:

First Fix

New cables are run to all circuits, using the most practical routes — through the loft where possible, through floor voids where accessible, and chased into walls where necessary. Back boxes are installed for all sockets and switches.

Minimising Damage

We use a 'chop and chase' approach to minimise damage to period features. Where cornicing, ceiling roses and original features need to be carefully worked around, we take the time to do it properly. We always cut cleanly rather than hacking.

Second Fix

Once plastering is complete, we fit all accessories, install the new consumer unit and carry out a full test of every circuit. The Electrical Installation Certificate is issued on completion.

How to Minimise Disruption

The best time to rewire is during a full renovation — when walls are opened up and plaster is coming off anyway. If you're planning a kitchen or bathroom renovation, integrating a rewire at the same time is significantly cheaper and less disruptive than doing it as a separate job.

Costs and Timescales

A 2-bedroom Victorian flat typically takes 4–6 days and costs £2,500–£4,000. A 3-4 bedroom terraced house takes 6–10 days and costs £4,000–£7,000. These are broad guides — we always survey before quoting.