Plumbers and electricians in Holloway, N7

N7 covers Holloway, from Archway Road and Holloway Road down to Caledonian Road and across to Hillmarton and Tufnell Park Road. It is entirely in Islington.

Homes in N7

Holloway ward has the highest share of purpose built flats of the areas we cover, at 67.8% of households, and Laycock ward 59.8%. Social renting is 43.2% in Holloway and 47.8% in Laycock. Private renting is 31.5% and 26.8%. (Source: ONS Census 2021, TS044 Accommodation type (Nomis); ONS Census 2021, TS054 Tenure (Nomis))

Census 2021, % of households. (Source: ONS Census 2021, TS044 Accommodation type (Nomis); ONS Census 2021, TS054 Tenure (Nomis))

Conservation areas in and around N7

• Hillmarton (CA32) (Source: Islington Council, Conservation areas)
• Tufnell Park (CA11): Mostly villas and terraces from the 1860s and 1870s. (Source: Islington Council, Tufnell Park (CA11) design guidelines)
• Tollington Park (CA25) (Source: Islington Council, Conservation areas)

Conservation areas have extra planning controls on changes to the outside of buildings, so check before moving a boiler flue, adding external pipework or fitting an outdoor unit.

Water and pipes

Holloway has its own Thames Water supply zone. Its 2025 report gives a hardness range of 249 to 282 mg/l, mean 271 mg/l as calcium carbonate, which is in the 'hard' band. (Source: Thames Water, 2025 water quality zone reports (Holloway, Crouch End and Gospel Oak, Kentish Town, Muswell Hill and Hampstead Heath); Thames Water, Hard water)

Homes built before 1970 may have a lead supply pipe. Thames Water will replace its own section free if you replace yours and meet its criteria; the scheme is closed over winter and due to reopen in spring 2027. (Source: Drinking Water Inspectorate, Lead in drinking water; Thames Water, Lead pipe replacement)

Good to know in N7

• In blocks of flats, the main pipes, risers and communal boilers usually belong to the landlord or managing agent. Call them first if the problem is not inside your own flat.
• Holloway ward has many privately rented flats (31.5% of households), so EICR and gas safety work for landlords is common here.
• Laycock ward is due to join Islington's selective licensing scheme on 23 November 2026.

Borough guides: plumbers in Islington · electricians in Islington

Questions about N7