TN postcode locations

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

40 districts from TN1 to TN40. Choose your district below to reach the pages for the places in it.

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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 TN postcode area

The TN postcode area is named after Tonbridge and covers south and west Kent (Sevenoaks, Westerham, Edenbridge, Tonbridge, Tunbridge Wells, Paddock Wood, Cranbrook, Tenterden and Ashford’s southern villages) together with much of East Sussex, including Crowborough, Uckfield, Battle, Bexhill and Hastings, and small pieces of Surrey and the London Borough of Bromley around Westerham and Biggin Hill (TN16). Mail for the area is sorted at Rochester. Our team covers the Kent districts nearest London in depth.

The Weald dominates: timber-framed and tile-hung cottages, Georgian and Victorian town houses in Sevenoaks, Tonbridge and Tunbridge Wells, and post-war and modern estates on the edges of each town. Clay ground, older solid walls, cellars and extensions of several centuries make penetrating damp, rising damp and roof leaks the common investigations here.

Each district below links to the places inside it, with the council page named on the row. Districts with no local page yet show no places; call to check cover for a specific address.

How the TN districts fall by council. In our directory Tunbridge Wells has places in TN1 to TN4, TN11 to TN12 and TN17 to TN18; Sevenoaks in TN8 and TN13 to TN16; Tonbridge and Malling in TN9 to TN12 and TN15; Tandridge in TN8 and TN16; Bromley in TN16, so the area straddles Kent, Surrey and Greater London. Royal Mail post towns across the area: Tunbridge Wells, Wadhurst, Crowborough, Hartfield, Edenbridge, Tonbridge, Sevenoaks, Westerham, Cranbrook, Etchingham, Mayfield, Heathfield, Uckfield, Ashford, New Romney, Romney Marsh, Tenterden, Rye, Robertsbridge, Battle and 4 more. Ashford, Folkestone and Hythe and Maidstone (TN12 and TN23 to TN30) are in the part of Kent we attend by arrangement only. Rother, Wealden and Hastings (TN3, TN5 to TN7, TN19 to TN22 and TN31 to TN40) are in the part of Sussex we attend by arrangement only.

Housing in Tunbridge Wells, Sevenoaks and Tonbridge and Malling (Census 2021), the main council areas for TN postcodes in our directory: tenure across 150,809 households is 69% owner-occupied, 15% private rented and 14% social rented; by type, 13% purpose-built flats, 4% converted or other flats, 20% terraced, 32% semi-detached, 29% detached.Source: ONS Census 2021, tables TS054 (tenure) and TS044 (accommodation type), via Nomis.

Districts TN1 to TN40

TN1: Tunbridge Wells

Council area: Tunbridge Wells.

Covered from the council page above.

TN2: Tunbridge Wells

Council area: Tunbridge Wells.

Also covered: Hawkenbury, Pembury.

TN3: Tunbridge Wells

Council area: Tunbridge Wells / Wealden / Sevenoaks.

Also covered: Ashurst, Bidborough, Fordcombe, Lamberhurst, Langton Green, Speldhurst and 2 more.

The Sussex villages here (Bells Yew Green, Blackham, Eridge Green, Frant, Groombridge) are by arrangement.

TN4: Tunbridge Wells

Council area: Tunbridge Wells.

Also covered: Southborough, High Brooms, Rusthall.

TN5: Wadhurst

Council area: Wealden / Rother.

Rest of Sussex, by arrangement. Call 0800 054 1524 and we will confirm whether we can attend.

TN6: Crowborough

Council area: Wealden.

Rest of Sussex, by arrangement. Call 0800 054 1524 and we will confirm whether we can attend.

TN7: Hartfield

Council area: Wealden.

Rest of Sussex, by arrangement. Call 0800 054 1524 and we will confirm whether we can attend.

TN8: Edenbridge

Council area: Sevenoaks / Tandridge.

Also covered: Edenbridge, Bough Beech, Cowden, Crockham Hill, Four Elms, Hever and 3 more.

TN9: Tonbridge

Council area: Tonbridge and Malling.

Tonbridge

TN10: Tonbridge

Council area: Tonbridge and Malling.

Within our standard area. Call 0800 054 1524 to book.

TN11: Tonbridge

Council area: Tonbridge and Malling / Sevenoaks / Tunbridge Wells.

Also covered: Chiddingstone Causeway, Golden Green, Hadlow, Hildenborough, Leigh, Penshurst and 1 more.

TN12: Tonbridge

Council area: Maidstone / Tunbridge Wells / Tonbridge and Malling.

Also covered: Paddock Wood, Brenchley, East Peckham, Five Oak Green, Horsmonden, Matfield and 2 more.

The Kent villages here (Chainhurst, Collier Street, Marden, Milebush, Mockbeggar, Staplehurst) are by arrangement.

TN13: Sevenoaks

Council area: Sevenoaks.

Also covered: Bessels Green, Chipstead, Riverhead, Dunton Green.

TN14: Sevenoaks

Council area: Sevenoaks / Bromley.

Also covered: Cudham, Horns Green, Badgers Mount, Halstead, Ide Hill, Knockholt and 5 more.

TN15: Sevenoaks

Council area: Sevenoaks / Tonbridge and Malling.

Also covered: Ash, Borough Green, Godden Green, Hodsoll Street, Ightham, Ivy Hatch and 10 more.

TN16: Westerham

Council area: Bromley / Sevenoaks / Tandridge.

Tatsfield

Also covered: Aperfield, Biggin Hill, Westerham, Berry’s Green, Single Street, South Street and 2 more.

TN17: Cranbrook

Council area: Tunbridge Wells / Ashford.

Also covered: Benenden, Cranbrook, Frittenden, Goudhurst, Hartley, Kilndown and 4 more.

The Kent villages here (Rolvenden, Rolvenden Layne) are by arrangement.

TN18: Cranbrook

TN38: St. Leonards-on-Sea

Council area: Hastings.

Rest of Sussex, by arrangement. Call 0800 054 1524 and we will confirm whether we can attend.

TN39: Bexhill-on-Sea

Council area: Rother.

Rest of Sussex, by arrangement. Call 0800 054 1524 and we will confirm whether we can attend.

TN40: Bexhill-on-Sea

Council area: Rother.

Rest of Sussex, by arrangement. Call 0800 054 1524 and we will confirm whether we can attend.

Part of our London, Surrey, Kent and Sussex 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.

Downpipe discharging into a blocked gully with standing water and green algae on the paving — Blocked gully found overflowing at a downpipe

Hand holding a pinless moisture meter reading 63 per cent against blown plaster beside an architrave — Moisture mapping pinpoints the wet area

Mould spotting on the back of ceiling plasterboard opened up beneath a steel beam, loft insulation visible above — Hidden mould found on the back of a ceiling board

What we do across the TN postcode area

A written diagnosis first; remedial work only once the cause is known. All services →

Leak detection

We locate concealed supply, heating and waste leaks under floors and behind finishes, and mark the exact spot.

Urgent leaks & burst pipes

If water is actively coming in, phone rather than fill in the form; live leaks go to the front of the queue.

Mould treatment & investigation

We find the moisture source, treat the mould and tackle the cause so it is far less likely to return, all backed by a written report.

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 TN postcode area

Ring, message or leave your details below. Our team replies to every enquiry and prioritises live leaks over routine surveys.

Get a call back ☎ 0800 054 1524 WhatsApp us

Fully
Insured

Written Reports
Included

Urgent Cases
Prioritised

Housing & Compliance
Evidence Reports

Written Workmanship
Terms

Damp, mould or a leak in the TN postcode area? Tell us about it

Leave your details here and our team will phone you to discuss the problem and the next step. If water is actively coming in, call 0800 054 1524 first.

Common questions about the TN postcode area

What happens after the investigation in the TN postcode area?

You receive the written report, usually with a separate quote for any remedial work. You decide what happens next; nothing is booked or started without your agreement.

Do you cover the whole of the TN postcode area?

Yes. Every borough, town and village listed on this page is attended by our own team, and places without their own page yet are covered in the same way. If in doubt, call 0800 054 1524.

How soon can you attend in the TN postcode area?

Call 0800 054 1524 for the earliest available appointment. Active leaks and water coming into a property are prioritised over routine surveys.

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