Condensation, mould and landlords, Hertfordshire
Ventilation for landlords and letting agents in Hertfordshire
Tested fans and PIV for rental homes and HMOs, with records for your property file, across Hertfordshire.
- From £1,575 inc VAT per property
- Free survey

For Hertfordshire rentals, we fit ventilation that tenants cannot switch off and forget.
Our team is based in Great Barr, Birmingham, and we work throughout Hertfordshire, from Welwyn Garden City, Cheshunt, Hatfield, Bishop's Stortford and Watford. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
Landlords in Hertfordshire at a glance
- Area
- Hertfordshire
- Towns listed
- 32, largest Watford
- Postcode districts
- EN10, EN11, SG5, SG6, WD2 and WD24
- Price region
- East of England
- Survey
- Free survey (UK mainland)
How we do it
In England, damp and mould is one of the hazards assessed under the Housing Health and Safety Rating System, and councils can take enforcement action. Awaab's Law already sets strict timescales for social landlords, and the Renters' Rights Act provides for similar duties to be extended to private renting. Wales, Scotland and Northern Ireland have their own standards, but the practical answer is the same: moisture has to be extracted.
Fan upgrade per room
Humidity-controlled or continuous fans in kitchens and bathrooms, ducted to outside.
Rental package
A PIV unit plus two humidity fans: a typical fix for a damp 2 to 3 bed rental.
HMO ventilation
Extract for every kitchen and shower room, often with continuous fans tenants cannot switch off.
Guide prices in Hertfordshire
| Work | Guide price |
|---|---|
| Rental upgrade: PIV unit plus two humidity-controlled extract fans (typical 2 to 3 bed) (per property) | £1,575–£2,825 inc VAT |
| Condensation and mould ventilation survey with written findings (per home) | £130–£235 inc VAT |
| Like-for-like extractor fan replacement (existing duct and wiring) (per fan) | £185–£310 inc VAT |
| Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan) | £360–£625 inc VAT |
East of England rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Signs it is time to call us
- A council officer or agent has raised a damp hazard
- Fans in the property are switched off, broken or vent into the loft
- You are refurbishing between tenants
Rules in England
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). Serious damp and mould is a hazard under the Housing Health and Safety Rating System, and social landlords now have fixed timescales under Awaab's Law.
How the job runs
- Instruction
- Survey
- Quote
- Install
- Records
Towns we cover in Hertfordshire
- Watford
- Hemel Hempstead
- Stevenage
- St Albans
- Welwyn Garden City
- Cheshunt
- Hatfield
- Bishop's Stortford
- Borehamwood
- Hitchin
- Hoddesdon
- Letchworth Garden City
- North Watford
- Harpenden
- Bushey
- Hertford
- Rickmansworth
- Potters Bar
- Berkhamsted
- Ware
- Enfield Lock
- Royston
- Croxley Green
- Broxbourne
- West Watford
- Batchworth
- Tring
- Chorleywood
- Codicote
- Baldock
- Abbots Langley
- Waltham Cross
Questions about ventilation for landlords and letting agents in Hertfordshire
Is the survey free in Hertfordshire?
For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.
Can work be done with tenants living there?
Yes. Most fan and PIV jobs are done in a few hours with tenants at home, and we clear up as we go.
Do you give landlords paperwork?
Every job comes with photos, product details and measured airflow, so you can show what was done and when.
Which rules apply to ventilation in Hertfordshire?
In England, ventilation in new and altered homes is covered by Approved Document F of the Building Regulations. Landlords also have duties under the Housing Health and Safety Rating System, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.
Which towns in Hertfordshire do you cover?
All of Hertfordshire, including Welwyn Garden City, Cheshunt, Hatfield, Bishop's Stortford and Watford. If your town is not listed, send the postcode and we will confirm.
Most Hertfordshire rental upgrades are finished in a single visit.
Other services in Hertfordshire
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.