Condensation and mould ventilation fixes
We find why the house is wet and fix the ventilation, rather than painting over mould.
From £445 inc VAT per fan
Condensation, mould and landlords
Ventilation for landlords, HMOs and letting agents
Tested fans and PIV for rental homes and HMOs, with records for your property file.
- From £1,495 inc VAT per property
- Free survey on the UK mainland
- Airflow tested and recorded
Landlords are responsible for keeping rented homes free from serious damp and mould hazards, and ventilation that tenants cannot easily switch off is the most reliable way to do it. We upgrade fans, fit PIV and continuous extract, and leave a written record of what was installed and the airflow it achieves.
How it works
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.
We work with individual landlords, portfolio landlords, HMO owners and letting agents. Jobs can be booked between tenancies or arranged with tenants in occupation, and every visit ends with photos and airflow readings you can keep on file.
Options we fit
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.
Portfolio programmes
Multiple properties surveyed and upgraded to one standard, with a report per address.
Signs you need this
- A tenant has reported damp or mould
- Mould keeps returning between tenancies
- 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
- You manage HMOs with many shower rooms and kitchens
Guide prices
| Work | Guide price |
|---|---|
| Rental upgrade: PIV unit plus two humidity-controlled extract fans (typical 2 to 3 bed) (per property) | £1,495–£2,695 inc VAT |
| Condensation and mould ventilation survey with written findings (per home) | £125–£225 inc VAT |
| Like-for-like extractor fan replacement (existing duct and wiring) (per fan) | £175–£295 inc VAT |
| Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan) | £345–£595 inc VAT |
Guide prices using West Midlands (our baseline) rates. Home prices include VAT at 20%; business prices exclude VAT. A guide price is not a quote: we confirm a fixed price in writing first. London is about 20% higher and the North East about 8% lower.
What happens, step by step
Instruction
Book directly or through your agent; we arrange access with tenants.
Survey
Humidity readings, fans tested, causes listed, photos taken.
Quote
Fixed price per property with the cheapest effective fix first.
Install
Work done in one visit wherever possible, with minimal disruption.
Records
Photos, product details and measured airflow for your property file.
The rules that apply
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.
Wales
Wales has its own Part F ventilation guidance, published by the Welsh Government, and work is checked by building control. Rented homes in Wales must be fit for human habitation under the Renting Homes (Wales) Act, and damp and mould is one of the matters considered.
Scotland
In Scotland, ventilation is covered by the Building (Scotland) Regulations and section 3 of the Technical Handbooks, and most building work needs a building warrant first. Scottish rented homes must meet the Repairing Standard (private) or the Scottish Housing Quality Standard (social), which cover damp.
Northern Ireland
In Northern Ireland, ventilation is covered by the Building Regulations (Northern Ireland) and Technical Booklet K. Landlords in Northern Ireland have repairing and fitness obligations that cover serious damp.
Questions people ask
Is a landlord responsible for condensation and mould?
A landlord is responsible for the condition of the property, including adequate ventilation and heating, and serious damp and mould can be a hazard under housing law. Tenants also have to use the home reasonably, but ventilation that works without effort removes most disputes.
What is the best ventilation for a rental property?
For most rentals, humidity-controlled or continuous extract fans in the wet rooms plus a PIV unit gives reliable results that tenants cannot easily switch off. It typically costs £1,495 to £2,695 including VAT for a 2 to 3 bed home.
Does Awaab's Law apply to private landlords?
Awaab's Law currently applies to social landlords in England. The Renters' Rights Act provides for similar requirements to apply to private rented homes later; dates are set by government.
Can you work with my letting agent?
Yes. We can take instructions from your agent, arrange tenant access, and send photos and reports to both of you.
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.
Related services
Social housing ventilation programmes
Survey-led ventilation upgrades across stock, with per-home records and tenant liaison.
From £650 + VAT per home
Positive input ventilation (PIV)
Loft or wall units that gently push filtered air into the home to tackle condensation.
From £795 inc VAT per home
Continuous extract fans (dMEV)
Quiet low-energy fans that run all the time and boost automatically when humidity rises.
From £345 inc VAT per fan
Read before you buy
Ventilation for landlords and letting agents by area
Choose your area for local guide prices and the towns we cover.
- Bedfordshire
- Berkshire
- Bristol
- Buckinghamshire
- Cambridgeshire
- Cheshire
- Cornwall
- Cumbria
- Derbyshire
- Devon
- Dorset
- County Durham
- East Riding of Yorkshire
- East Sussex
- Essex
- Gloucestershire
- Greater London
- Greater Manchester
- Hampshire
- Herefordshire
- Hertfordshire
- Isle of Wight
- Kent
- Lancashire
- Leicestershire
- Lincolnshire
- Merseyside
- Norfolk
- North Yorkshire
- Northamptonshire
- Northumberland
- Nottinghamshire
- Oxfordshire
- Rutland
- Shropshire
- Somerset
- South Yorkshire
- Staffordshire
- Suffolk
- Surrey
- Tyne and Wear
- Warwickshire
- West Midlands
- West Sussex
- West Yorkshire
- Wiltshire
- Worcestershire
- Clwyd
- Dyfed
- Gwent
- Gwynedd and Anglesey
- Mid Glamorgan
- Powys
- South Glamorgan
- West Glamorgan
- Edinburgh
- Lothians
- Glasgow
- Lanarkshire
- Renfrewshire and Inverclyde
- Dunbartonshire
- Ayrshire
- Fife
- Forth Valley
- Tayside
- Aberdeen and Aberdeenshire
- Highland and Moray
- Dumfries and Galloway
- Scottish Borders
- Argyll and Bute
- Scottish Islands
- County Antrim
- County Armagh
- County Down
- County Fermanagh
- County Londonderry
- County Tyrone
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.