Chichester, West Sussex
Condensation and mould ventilation fixes in Chichester
We find why the house is wet and fix the ventilation, rather than painting over mould. Covering Chichester and PO18, PO19 and PO20.
- From £490 inc VAT per fan
- Free survey

In Chichester homes, black mould usually comes down to the same few causes: weak fans, loft-vented ducts and no background ventilation.
For condensation and mould ventilation fixes in Chichester, send us the postcode, a few photos and a rough idea of the rooms involved. We will tell you what we would fit and roughly what it costs before arranging a visit.
Condensation and mould fixes in Chichester at a glance
- Town
- Chichester, West Sussex
- Postcode districts
- PO18, PO19 and PO20
- Nearby
- Bognor Regis (6 miles), Barnham (6 miles) and Emsworth (7 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
How we approach condensation and mould fixes in Chichester
A typical family puts several litres of water into the air every day. If extract fans are weak, ducted into the loft or switched off, and windows stay shut in winter, that moisture settles on the coldest surfaces: window reveals, external corners, behind wardrobes and on bathroom ceilings.
Survey and findings
Humidity and surface readings, existing fans flow-tested, and a written list of causes and fixes.
Fan upgrades
Weak or loft-vented fans replaced and ducted outside, with humidity control.
Guide prices in Chichester
| Work | Guide price |
|---|---|
| New ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) (per fan) | £490–£825 inc VAT |
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £875–£1,525 inc VAT |
| Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan) | £380–£650 inc VAT |
Guide prices using South East rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
When to get it looked at
- Water running down windows on cold mornings
- Musty smell in bedrooms or wardrobes
- Peeling paint or wallpaper in bathrooms
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. 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.
Questions from Chichester
Is the survey free in Chichester?
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.
What is the main cause of condensation in a house?
The main cause is moisture from everyday living, such as showers, cooking and drying clothes, that is not being extracted, combined with cold surfaces where it condenses. Poor or failed extract fans are a very common cause.
Will a dehumidifier fix condensation?
A dehumidifier helps in one room but treats the symptom. Fixing the extract in the wet rooms, and adding whole-home ventilation where needed, removes moisture before it spreads.
How do I get a price for a condensation fix in Chichester?
Use the guide price tool, the form on this page, live chat, WhatsApp or call 0800 088 6341. A postcode and a couple of photos help us give you a useful answer first time.
What area around Chichester do you work in?
All of West Sussex. Near Chichester that includes Bognor Regis, Barnham, Emsworth and Selsey.
If we fit the fix, the Chichester survey is free.
Condensation and mould fixes near Chichester
More services in Chichester
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.