How can I tell if my 1930s house in Pinner has been rewired?

There are clues. Rewireable fuses or a wooden-backed fuse board suggest old wiring, as do round-pin sockets, sockets set into skirting boards, and black rubber or fabric-covered cable in the loft. Modern PVC cable is grey or white. None of that proves the wiring is safe or unsafe, though. The only way to know is to test it, which is exactly what an EICR does.

Do I need a separate supply for a garden office at my house in Stanmore?

If you'll use heating, a computer and lighting out there, yes. A garden office should be fed by a suitably sized, mechanically protected cable, either buried or securely fixed, with protection at the house end and usually a small consumer unit in the building itself. It counts as a new circuit, so it's notifiable, and the finished work should come with a certificate. It's also a good time to run a data cable.

London Borough of Harrow

Electrician in Harrow

We cover all of Harrow, from the town centre to the residential streets of North Harrow, Pinner, and Stanmore. Many homes in the area were built in the 1930s and may still have original wiring. We carry out rewires, EICR inspections, and consumer unit upgrades to bring older properties up to current standards.

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Covering all of Harrow and surrounding areas

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Electrical work in Harrow

Covering HA1, HA2, HA3, HA5, HA7 and the streets around them.

Harrow is semi-detached London. In the 2021 census, 37 per cent of the borough's households lived in a semi, rising to more than half in North Harrow and Pinner South wards. Many of those houses date from the 1920s and 1930s, when the Metropolitan line turned fields into Metro-land: Pinnerwood Park got planning permission in 1932, and the council describes the Pinner Road conservation area as distinctive 1930s Metroland development.

Many 1930s semis have since gained a loft conversion, a kitchen extension or both, each adding load to the original supply. If the house still has a rewireable fuse box, or a mix of old rubber cable and newer PVC, an EICR will show what's safe to keep. Pinner and Stanmore wards have a higher share of detached houses, and a private driveway makes a home EV charger far simpler to install.

The history goes back further than Metro-land. Pinner High Street has timber-framed buildings from as early as the 15th century, and parts of St Mary's Church on Harrow on the Hill date from the 12th. At the other end of the scale, most households in Greenhill ward, which takes in St Ann's Road, live in purpose-built flats, and thousands more homes are planned around Harrow and Wealdstone station. We cover the whole borough for rewires, consumer unit upgrades, EV chargers and emergency callouts.

Landlords in Harrow

Harrow now runs selective licensing in six wards, Edgware, Roxeth, Greenhill, Marlborough, Wealdstone North and Wealdstone South, phased in between May and September 2026. Pinner, Stanmore, North Harrow and Harrow on the Hill wards aren't included, and the council asks for an electrical safety certificate with every application.

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Electrical Services in Harrow

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Emergency Electrician

24-hour emergency electrical response across Greater London. Power cuts, tripping circuits, burning smells, sparking outlets.

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EICR Electrical Certificates

Electrical Installation Condition Reports for landlords, homeowners and buyers across Greater London. Full test, coded report, and any remedial work handled by the same team.

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