Condensation, mould and landlords, South Glamorgan
Ventilation for landlords and letting agents in South Glamorgan
Tested fans and PIV for rental homes and HMOs, with records for your property file, across South Glamorgan.
- From £1,425 inc VAT per property
- Free survey

Between tenancies is the best time to fix ventilation in a South Glamorgan rental, but we work around tenants too.
Our team is based in Great Barr, Birmingham, and we work throughout South Glamorgan, from Rhiwbina, Cardiff, Barry, Penarth and Llantwit Major. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
Landlords in South Glamorgan at a glance
- Area
- South Glamorgan, Wales
- Towns listed
- 6, largest Cardiff
- Postcode districts
- CF11, CF61, CF71, CF5, CF14 and CF14
- Price region
- Wales
- Survey
- Free survey (UK mainland)
How we do it
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.
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 South Glamorgan
| Work | Guide price |
|---|---|
| Rental upgrade: PIV unit plus two humidity-controlled extract fans (typical 2 to 3 bed) (per property) | £1,425–£2,550 inc VAT |
| Condensation and mould ventilation survey with written findings (per home) | £120–£215 inc VAT |
| Like-for-like extractor fan replacement (existing duct and wiring) (per fan) | £165–£280 inc VAT |
| Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan) | £330–£575 inc VAT |
Wales 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
- You manage HMOs with many shower rooms and kitchens
- A tenant has reported damp or mould
- Mould keeps returning between tenancies
Rules in Wales
In Wales, ventilation follows the Welsh Approved Document F rather than the English version, with building control checking notifiable work. 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.
How the job runs
- Instruction
- Survey
- Quote
- Install
- Records
Towns we cover in South Glamorgan
Questions about ventilation for landlords and letting agents in South Glamorgan
Are prices different in South Glamorgan?
Our guide prices are adjusted by region. In South Glamorgan we use Wales rates, so rental upgrade: PIV unit plus two humidity-controlled extract fans (typical 2 to 3 bed) is typically £1,425 to £2,550 inc VAT per property.
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.
Is the survey free in South Glamorgan?
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.
Which rules apply to ventilation in South Glamorgan?
In Wales, the Welsh Government's own Approved Document F (2022 edition) applies to ventilation in homes, with a new edition taking effect on 4 March 2027. Rented homes must be fit for human habitation under the Renting Homes (Wales) Act 2016, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.
Most South Glamorgan rental upgrades are finished in a single visit.
Other services in South Glamorgan
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.