Condensation, mould and landlords, County Down
Ventilation for landlords and letting agents in County Down
Tested fans and PIV for rental homes and HMOs, with records for your property file, across County Down.
- From £1,375 inc VAT per property
- By arrangement

Letting agents in County Down can book us to deal with damp reports and get photos and readings for the file.
If you are anywhere in County Down, send the postcode and a few photos and we will tell you what we would recommend. Towns we cover include Newry, Banbridge, Dundonald, Holywood and Downpatrick.
Landlords in County Down at a glance
- Area
- County Down, Northern Ireland
- Towns listed
- 8, largest Bangor
- Postcode districts
- BT30, BT19, BT20, BT5, BT6 and BT16
- Price region
- Northern Ireland
- Survey
- By arrangement, travel quoted first
What ventilation for landlords and letting agents involves
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.
Portfolio programmes
Multiple properties surveyed and upgraded to one standard, with a report per address.
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.
Guide prices in County Down
| Work | Guide price |
|---|---|
| Rental upgrade: PIV unit plus two humidity-controlled extract fans (typical 2 to 3 bed) (per property) | £1,375–£2,475 inc VAT |
| Condensation and mould ventilation survey with written findings (per home) | £115–£205 inc VAT |
| Like-for-like extractor fan replacement (existing duct and wiring) (per fan) | £160–£270 inc VAT |
| Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan) | £315–£550 inc VAT |
Guide prices using Northern Ireland rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first. Travel is quoted separately for this area.
Common reasons people call
- You manage HMOs with many shower rooms and kitchens
- A tenant has reported damp or mould
- Mould keeps returning between tenancies
Rules in Northern Ireland
Northern Ireland has its own building regulations, with ventilation guidance in Technical Booklet K. Rented homes in Northern Ireland must meet fitness and repair duties, which include dealing with serious damp.
How the job runs
- Instruction
- Survey
- Quote
- Install
- Records
Towns we cover in County Down
Questions about ventilation for landlords and letting agents in County Down
Are prices different in County Down?
Our guide prices are adjusted by region. In County Down we use Northern Ireland rates, so rental upgrade: PIV unit plus two humidity-controlled extract fans (typical 2 to 3 bed) is typically £1,375 to £2,475 inc VAT per property.
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.
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.
Is the survey free in County Down?
Visits here are by arrangement. Because of the ferry or long travel involved, we quote travel separately and in writing before you commit, and we can often combine visits to keep the cost down.
Which rules apply to ventilation in County Down?
In Northern Ireland, ventilation is covered by Technical Booklet K of the Building Regulations (Northern Ireland). Workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations (Northern Ireland) 1993.
We can report back to you and your agent with photos from every County Down visit.
Other services in County Down
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.