In short: Damp and mould in an HMO is usually caused by condensation, leaks or rising or penetrating damp, and often by a mix. Across Hertfordshire, the work is planned around England’s HMO rules and the standards the local council publishes.
- Nation
- England
- Pricing region
- East of England
- Postcode areas
- SG, AL, WD, HP
- Main towns
- Watford, Hemel Hempstead, Stevenage, St Albans, Welwyn Garden City
What do damp, mould and HHSRS repairs in Hertfordshire involve?
- Damp-proofing where it is the cause
- Cause-finding survey with moisture readings
- Extraction and continuous ventilation
- Re-plastering and making good
- Leak, gutter and roof repairs
- Mould treatment and stain-block
Which rules apply in Hertfordshire?
- 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 Hertfordshire?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Damp repair, from a single wall to a whole house | £600 – £4,000 | £640 – £4,250 | job |
| Mould treatment and making good | £250 – £500 | £260 – £530 | 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 Hertfordshire
- Watford
- Hemel Hempstead
- Stevenage
- St Albans
- Welwyn Garden City
- Cheshunt
- Hatfield
- Borehamwood
- Hitchin
- Hoddesdon
- Letchworth Garden City
- North Watford
- Harpenden
- Bushey
- Hertford
- Rickmansworth
- Potters Bar
- Berkhamsted
Questions about damp, mould and HHSRS repairs in Hertfordshire
Is damp always rising damp?
No. In shared houses condensation is the most common cause, because of cooking, showers and drying clothes. We find the cause before recommending any treatment.
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 Hertfordshire?
Yes, across the whole of Hertfordshire, including Watford, Hemel Hempstead, Stevenage.
Who licenses HMOs in Hertfordshire?
HMOs in Hertfordshire 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 Hertfordshire
- Shared bathroom and shower room refits in Hertfordshire
- EPC and energy upgrades in Hertfordshire
- Full HMO refurbishment in Hertfordshire
- Void and between-tenancy refurbs in Hertfordshire
- Licence condition and schedule-of-works in Hertfordshire
- Communal kitchen refits in Hertfordshire
- Escape routes, emergency lighting and fire stopping in Hertfordshire
- Bedroom upgrades and room refits in Hertfordshire