North London locations
Damp, Mould & Leak Detection in North London
Barnet, Enfield and Haringey: the three outer boroughs that run north from Finsbury Park and Cricklewood to the Hertfordshire boundary.
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Fully insured · Non-invasive methods first · Written reports included · London & Surrey
Damp, mould and leaks across north London
North London in its widest sense is everything north of the Thames and the City, running out from Clerkenwell and Finsbury on the edge of the financial district to the boundary with Hertfordshire. On this site the inner boroughs of Camden and Islington are listed under central London, and north London means the three outer boroughs of Barnet, Enfield and Haringey: Cricklewood and Hendon in the west, Edmonton in the north east, Crouch End, Finsbury Park and Wood Green in between.
The 2021 Census counted about 375,000 households across the three boroughs. Just under half own their home and a third rent privately. The stock is evenly split between houses and flats: 22 % semi-detached, 22 % terraced, 34 % in purpose-built blocks and 14 % in converted houses, with Barnet carrying most of the inter-war semis and Haringey most of the Victorian terraces that have been cut into flats.
The investigations that bring us north most often are leaks between converted flats in Haringey and Barnet, penetrating damp through the solid brick of older terraces, bay-window and chimney defects on the inter-war semis, and mould in rented rooms where heating and ventilation have not kept pace with occupancy. Every borough below links to its own page and to the neighbourhoods within it that have a page of their own.
The three boroughs
London Borough of Barnet
Main postcode districts: EN4, EN5, HA8, N11, N12, N2, N20, N3, NW11, NW4, NW7, NW9.
Housing in Barnet (Census 2021): of 148,917 households, 53% own their home, 33% rent privately and 13% rent from a council or housing association. By building type, 37% live in purpose-built flats, 11% in flats within converted or commercial buildings, 15% in terraces, 27% in semi-detached houses and 10% in detached houses.Source: ONS Census 2021, tables TS054 (tenure) and TS044 (accommodation type), via Nomis.
Also covered: Childs Hill, Arkley, Barnet Gate, Brent Cross, Colney Hatch, Finchley, New Barnet, Brunswick Park, Cockfosters, East Barnet and 22 more.
London Borough of Enfield
Main postcode districts: EN1, EN2, EN3, EN4, N11, N13, N14, N18, N21, N9.
Housing in Enfield (Census 2021): of 120,923 households, 52% own their home, 30% rent privately and 17% rent from a council or housing association. By building type, 30% live in purpose-built flats, 8% in flats within converted or commercial buildings, 29% in terraces, 25% in semi-detached houses and 7% in detached houses.Source: ONS Census 2021, tables TS054 (tenure) and TS044 (accommodation type), via Nomis.
Also covered: Arnos Grove, Bullsmoor, Ponders End, Bush Hill Park, Hadley Wood, Bulls Cross, Brimsdown, Enfield Highway, Enfield Lock, Enfield Wash and 8 more.
London Borough of Haringey
Main postcode districts: N4, N6, N8, N10, N15, N17, N22, N11.
Housing in Haringey (Census 2021): 105,091 households; 37% owner-occupied, 36% privately rented and 25% socially rented. 35% of homes are purpose-built flats, 26% are flats in converted houses or other buildings, 26% terraced houses, 9% semi-detached and 4% detached.Source: ONS Census 2021, tables TS054 (tenure) and TS044 (accommodation type), via Nomis.
Crouch End · Finsbury Park · Wood Green
Also covered: Harringay, Bounds Green, Fortis Green, Hornsey, Muswell Hill, Stroud Green, Turnpike Lane, South Tottenham, Tottenham, Tottenham Hale and 5 more.
All London boroughs · All locations · EN postcode area · HA postcode area · N postcode area · NW postcode area
Real investigations by our team
Examples from DML investigations across our service area. Our own photographs, not stock imagery.
What we do across North London
Investigation, written report and repair from one team, so nothing is lost between trades. All services →
Leak detection
When the water is coming from somewhere nobody can see, our instruments find it and our report explains it.
Trace & access (insurance)
Locate, open up at one point, photograph and record: the evidence an escape-of-water claim is built on.
Damp & mould surveys
Independent damp diagnosis for owners, buyers and landlords, with no treatment sold on the back of it.
Moisture mapping & thermal imaging
Infrared scanning and calibrated meters that map the wet area and point to its source.
Book a damp, mould or leak investigation in North London
Tell us what is happening and where; our team will call back, confirm the scope and book the visit. Live leaks come first.
Get a call back☎ 0800 054 1524WhatsApp us
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Book an investigation in North London
Tell us what you can see, smell or hear and when it started. One of our engineers will call to talk it through; for a live leak ring 0800 054 1524.
Frequently asked questions about North London
Will the report help with a housing or compliance matter in North London?
It is written to serve as supporting evidence for housing and compliance matters as well as insurance claims: cause, evidence, photographs and recommendations in plain English. The decision rests with the authority concerned.
How is a visit to North London 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 North London.
How do I find the right page for my street in North London?
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.
Last reviewed: 27 October 2026. Independent investigation and written reports. Repairs are quoted separately.