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N postcode locations

N Postcode Area: Damp, Mould & Leak Detection by District

22 districts from N1 to N22, with lettered sub-districts listed under their number. Select your district to see which local pages cover your street.

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Fully insured  ·  Non-invasive methods first  ·  Written reports included  ·  London & Surrey

CCTV drain survey camera reel and monitor set up on gravel beside an open chamber at night
CCTV camera going down an opened chamber

The N postcode area

The N postcode area is the North London district of the London post town, numbered in 1917. It covers parts of Haringey, Barnet, Islington, Hackney, Enfield and Camden, from Islington, Highbury and Stoke Newington in the south through Hornsey, Wood Green, Tottenham and Muswell Hill to Finchley, Southgate, Palmers Green and Winchmore Hill in the north. Most of the places listed below are in Haringey, Barnet and Islington.

The housing runs from Georgian and Victorian terraces in Islington and Canonbury, through the Edwardian streets of Hornsey, Crouch End and Muswell Hill, to the inter-war semis of Finchley, Southgate and Palmers Green, with large estates in Tottenham and Edmonton. Converted terraces with flats on each floor are the common case, and tracing water between them is a large part of our N postcode work.

Each district below links to the places inside it, with the borough page named on the row.

N by council and post town. Haringey has places in N4, N6, N8, N10 to N11, N15, N17 and N22; Enfield in N9, N11, N13 to N14, N18 and N21; Barnet in N2 to N3, N11 to N12 and N20; Islington in N1, N4 to N5, N7 and N19; Hackney in N1, N4 and N16; Camden in N6 and N19; all of them in Greater London. The post town for every district is London.

Housing in Haringey, Enfield and Barnet (Census 2021), the main council areas for N postcodes in our directory: 374,931 households (48% owned, 33% rented privately, 18% rented socially) living in purpose-built flats (34%), converted and other flats (14%), terraced (22%), semi-detached (22%) and detached (8%) homes.Source: ONS Census 2021, tables TS054 (tenure) and TS044 (accommodation type), via Nomis.

Districts N1 to N22

N1: London

Sub-districts: N1C.

Council area: Islington / Hackney / Camden.

Also covered: King’s Cross, Barnsbury, Canonbury, De Beauvoir Town, Hoxton, Pentonville and 2 more.

N2: London

Council area: Barnet / Haringey.

Also covered: Finchley, East Finchley, Hampstead Garden Suburb.

N3: London

Council area: Barnet.

Also covered: Finchley, Church End.

N4: London

Council area: Haringey / Hackney / Islington.

Finsbury Park

Also covered: Harringay, Manor House, Stroud Green.

N5: London

Council area: Islington / Hackney.

Also covered: Highbury.

N6: London

Council area: Camden / Haringey / Islington.

Also covered: Highgate.

N7: London

Council area: Islington / Camden.

Also covered: Tufnell Park, Holloway.

N8: London

Council area: Haringey / Islington.

Crouch End

Also covered: Harringay, Hornsey, Turnpike Lane.

N9: London

Council area: Enfield.

Edmonton

N10: London

Council area: Haringey / Barnet.

Also covered: Colney Hatch, Fortis Green, Muswell Hill.

N11: London

Council area: Barnet / Enfield / Haringey.

Also covered: Arnos Grove, Bounds Green, Colney Hatch, Brunswick Park, Friern Barnet, New Southgate.

N12: London

Council area: Barnet.

Also covered: Finchley, North Finchley, Woodside Park.

N13: London

Council area: Enfield.

Also covered: Palmers Green.

N14: London

Council area: Enfield / Barnet.

Also covered: Arnos Grove, Osidge, Southgate.

N15: London

Council area: Haringey / Hackney.

Also covered: Harringay, South Tottenham, Stamford Hill, Tottenham, Tottenham Hale, Seven Sisters and 2 more.

N16: London

Council area: Hackney / Islington.

Stoke Newington

Also covered: Shacklewell, Stamford Hill, West Hackney.

N17: London

Council area: Haringey.

Also covered: South Tottenham, Tottenham, Tottenham Hale, Northumberland Park.

N18: London

Council area: Enfield.

Edmonton

N19: London

Council area: Islington / Camden.

Archway

Also covered: Tufnell Park, Upper Holloway.

N20: London

Council area: Barnet.

Also covered: Oakleigh Park, Totteridge, Whetstone.

N21: London

Council area: Enfield.

Also covered: Grange Park, Winchmore Hill.

N22: London

Council area: Haringey / Enfield.

Wood Green

Also covered: Bounds Green, Bowes Park.

N1P and N81 are non-geographic codes used for business and PO-box mail, with no street addresses, so there is no local page.

Part of our London coverage. All postcode areas · All locations

Real investigations by our team

Examples from DML investigations across our service area. Our own photographs, not stock imagery.

Open drain inspection chamber at night inside red safety barriers, a screwdriver on the gravel beside it
Chamber opened for a night-time drain investigation
Blown and peeling plaster low on a wall beside a door frame, exposed by moisture damage
Blown plaster from long-term moisture
Black mould speckling spreading across a bathroom ceiling corner beside two downlights
Mould spreading across a bathroom ceiling

What we do across the N postcode area

Every visit ends with a written finding, and most with a clear plan for the repair. All services →

Trace & access (insurance)

Targeted access at the leak point only, with the photographs and readings a loss adjuster asks for.

Damp & mould surveys

Independent damp diagnosis for owners, buyers and landlords, with no treatment sold on the back of it.

Moisture mapping & thermal imaging

Calibrated readings and thermal surveys that show exactly where the moisture is, and where it isn’t.

CCTV drainage surveys

A camera down the line shows the cracked joint, root ingress or collapse that is wetting the ground beside a wall.

Book a damp, mould or leak investigation in the N postcode area

Tell us the symptom, the property type and where it is; we confirm the scope and the price before anyone travels.

Get a call back☎ 0800 054 1524

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Ask our team about a property in the N postcode area

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Questions about the N postcode area

How do I find the right page for my street in the N postcode area?

Use the listings on this page or the postcode directory; both lead to the same local page for each place. If your area is not listed, call 0800 054 1524. It is almost certainly still covered.

Do you treat mould as well as find the cause in the N postcode area?

Yes. Investigation and cause first, then treatment of the affected surfaces and the repair of the source, quoted separately and carried out or managed by our team.

How is a visit to the N postcode area priced?

Every visit is quoted individually once we understand the problem, and the price is confirmed before anyone travels. There is no separate area charge anywhere in the N postcode area.

Last reviewed: 27 October 2026. Independent investigation and written reports. Repairs are quoted separately.