Damp and mould · Hampstead
Damp and mould in Hampstead
Found at the source. Fixed properly.
54,950 of Camden's 114,360 homes were built before 1919.
Damp survey £120. Meter readings and a full visual inspection.
No injections unless a test proves rising damp.
Call any day. We book the next available engineer, usually the next working day.
Camden's homes, in numbers
Why damp happens in Camden's homes
Hampstead is in Camden. The facts on this page are for the whole borough.
- 48.1% Built before 19191
54,950 of Camden's 114,360 homes were built before 1919. - 82% Households in flats2
56.2% of households live in purpose-built flats and 26.2% in converted or shared houses. - 35.6% Rent privately2
35.6% of households rent privately, up from 32.2% in 2011. - 40 Conservation areas3
40 conservation areas, where some damp treatments need planning advice first. - 10% Private rented homes with damp (England)4
Damp affects 10% of private rented homes in England against 5% of all homes.
What causes it here
Causes we see in Camden's housing
Solid walls. Homes built before 1919 (48.1% in Camden1) usually have solid walls with no cavity, so rain can soak through brickwork and show inside as damp patches.
Flats. 82% of Camden households live in flats.2 A house split into flats shares one roof and one set of gutters, so a leak upstairs becomes mould downstairs.
Condensation. Drying washing, cooking and too little air: black mould on cold corners.
How we fix it
- Find the source: rain, rising, leak or condensation
- Fix the cause, then the plaster and decoration
- A written report you can share with a landlord or insurer
Renting out in Camden
Property licensing
Additional HMO licensing covers the whole borough (3 or more people from 2 or more households), 8 December 2025 to 8 December 2030.5
Check your street on the council's licence checker before you let.
Period and protected homes in Camden
In a Camden conservation area or listed building, check with Camden planning before any damp treatment.
Social landlords
We work to Awaab's Law timescales for social landlords
Rent from a council or housing association? Report damp and mould to your landlord first. They must act within these timescales.
| Step | Timescale | What happens |
|---|---|---|
| Emergency hazard | 24 hours | Investigate and make safe |
| Investigate | 10 working days | For significant damp and mould |
| Written summary | 3 working days | To the tenant, after the investigation |
| Safety work | 5 working days | After the investigation |
gov.uk guidance, updated 16 Jul 2026.6
Book a damp survey in Hampstead
Price agreed on the phone before anyone comes out.
Written by the Local Property Group damp team.
Sources (read 3 Nov 2026)
- VOA Council Tax stock of properties 2026 (CTSOP4.1), 24 Sep 2026
- Census 2021 (ONS TS044), Jan 2023
- Camden Planning Guidance: Design (Heritage), Jul 2023
- English Housing Survey 2024 to 2025, 29 Jan 2026
- Camden Council licensing, 2 Jul 2025
- Awaab's Law: guidance for social landlords (timeframes for repairs), 16 Jul 2026
Contains public sector information licensed under the Open Government Licence v3.0.