In short: Damp and mould in an HMO is usually caused by condensation, leaks or rising or penetrating damp, and often by a mix. In Greater London we survey first, price each item separately and hand over the certificates and photos a council asks for.
- Nation
- England
- Pricing region
- London
- Postcode areas
- W, E, SW, SE
- Main towns
- London, Brent, Islington, City of Westminster, Bexley
What do damp, mould and HHSRS repairs in Greater London involve?
- Photo report of before and after
- Extraction and continuous ventilation
- Re-plastering and making good
- Damp-proofing where it is the cause
- Leak, gutter and roof repairs
- Insulation to cold spots
Which rules apply in Greater London?
- Councils assess hazards, including damp, mould and fire, under the HHSRS; revised regulations and guidance applied from 23 June 2026.
- Rented homes must currently meet at least EPC E, with a £3,500 spending cap. The government plans EPC C by October 2030, subject to legislation.
- Councils can fine up to £7,000 where a Category 1 hazard is not removed when it reasonably could have been.
Councils in England can add additional licensing and Article 4 directions on top of the national rules. Check the council’s website for the exact address before you buy or start work.
How much do damp, mould and HHSRS repairs cost in Greater London?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Damp repair, from a single wall to a whole house | £600 – £4,000 | £770 – £5,100 | job |
| Mould treatment and making good | £250 – £500 | £320 – £640 | room |
Typical time on site: 2–10 working days. For a figure for your house, try the guide-price tool.
Damp, mould and HHSRS repairs by town in Greater London
- London
- Brent
- Islington
- City of Westminster
- Bexley
- Barking
- Archway
- Sutton
- Croydon
- Ilford
- Enfield Town
- Harrow
- Tottenham
- Walthamstow
- Dagenham
- Becontree
- Romford
- Hayes
- Wembley
- Fulham
- Edmonton
- Southall
- Putney
- Battersea
- Canary Wharf
- Purley
- Peckham
- Chingford
- Uxbridge
- Wimbledon
- Stamford Hill
- Brixton
- Hounslow
- Finchley
- Cricklewood
- Mitcham
- Feltham
- Acton
- Beckenham
- Chelsea
- Streatham
- South Croydon
- Leytonstone
- Eltham
- Morden
- Carshalton
- Catford
- Willesden
- Canning Town
- Holloway
- Welling
- Shepherds Bush
- Surbiton
- Greenford
- Heston
- Stratford
- Chiswick
- Thamesmead
- Ruislip
- Greenwich
- Barnet
- Kilburn
- Wood Green
- Muswell Hill
- Bow
- Highbury
- Camden Town
- Northolt
- Coulsdon
- Hornchurch
- Blackheath
- Isleworth
- Chalk Farm
- New Malden
- Hanworth
- Woodford Green
- Hadley Wood
- Richmond
- Barnes
- Notting Hill
- Wallington
- Pimlico
- Hampton
Questions about damp, mould and HHSRS repairs in Greater London
What is HHSRS?
The Housing Health and Safety Rating System, the method councils in England and Wales use to assess hazards in homes, including damp and mould.
Will a mould wash fix it?
Only for a while. Unless the cause is fixed, mould comes back.
Do you carry out damp, mould and HHSRS repairs across Greater London?
Yes, across the whole of Greater London, including London, Brent, Islington.
Who licenses HMOs in Greater London?
HMOs in Greater London are licensed by the local council for the address. Where an area has several councils, each runs its own licensing and planning policies.
Other HMO services in Greater London
- Shared bathroom and shower room refits in Greater London
- EPC and energy upgrades in Greater London
- Full HMO refurbishment in Greater London
- Void and between-tenancy refurbs in Greater London
- Licence condition and schedule-of-works in Greater London
- Communal kitchen refits in Greater London
- Fire alarm and detection systems in Greater London
- HMO fire safety upgrades in Greater London