Condensation and mould ventilation fixes
We find why the house is wet and fix the ventilation, rather than painting over mould.
Greater London · England
Homes, rentals and business premises in Belsize Park and NW3, NW6 and NW8.
We cover Belsize Park (NW3, NW6 and NW8) as part of our work across Greater London. We can help homeowners, landlords and businesses with new systems, testing, cleaning and repairs.
Landlords in Belsize Park can book a whole-property check: fans tested, trickle vents looked at and a written list of what to fix, which is useful evidence if a tenant reports damp or mould.
For businesses in Belsize Park we cover office and shop ventilation, commercial kitchen extraction, duct cleaning to TR19 and planned servicing of air handling units.
We find why the house is wet and fix the ventilation, rather than painting over mould.
Tested fans and PIV for rental homes and HMOs, with records for your property file.
Supply and extract with heat recovery for offices, shops, clinics and fit-outs.
Canopies, extract fans, make-up air and gas interlocks for cafés and restaurants.
| Work | Guide price |
|---|---|
| MVHR service: filters, unit and heat exchanger clean, airflow check (per visit) | £175–£295 inc VAT |
| New ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) (per fan) | £525–£900 inc VAT |
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £950–£1,675 inc VAT |
| Whole-home MVHR retrofit, 3 bedroom house (per home) | £7,750–£11,350 inc VAT |
Guide prices using London 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.
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.
It depends on the job. As a guide, like-for-like extractor fan replacement (existing duct and wiring) is typically £210 to £355 inc VAT per fan, using London rates.
Yes. We cover Belsize Park (NW3, NW6 and NW8) and nearby places including Kilburn, Abbey Road, Chalk Farm and Regent's Park.
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.
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.