- Postcode districts
- PO1, PO4, PO5
- Nearby
- Portsmouth, Gosport and South Hayling
- Guide price
- £280–£650
- Typical time on site
- half a day
- Water
- Hard across most of Hampshire
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Southsea?
As a guide, budget £280 to £650 including VAT for a bathroom extractor fan in Southsea; your written quote will pin it down. Labour costs in South East England put local prices at about 12% above the UK guide figure. The figure depends on the size of the room, whether anything moves, and the products you pick.
Extractor fan
- Wired to regulations
Inline fan
- Quiet fan in the loft void
Continuous extract
- Boost on humidity
Guide prices for Southsea including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Southsea
In Southsea we cover PO1, PO4 and PO5; we also cover Portsmouth, 1.1 miles away, and Gosport.
Southsea gets the same process as anywhere else: a free survey at your home and a written, itemised quote. In Southsea flats, a new vent through an outside wall may need freeholder consent, so we raise it at the survey. If your Southsea home is listed or in a period terrace, a fan ducted through the loft to a roof vent can avoid a new hole in the front wall, though consent may still apply.
Most of Hampshire has hard water. Steam carries that scale onto mirrors and glass, so a fan that clears the room quickly helps on both counts. Hardness varies street by street, so check the figure for your postcode with your water supplier.
What the job includes
- Making good around the fan and checking that it extracts properly at the grille
- Core-drilling through the wall, or ducting through the loft to a roof or soffit vent
- A backdraught shutter and external grille, so cold air does not blow back in
- Rigid or semi-rigid ducting kept short and straight, and insulated where it crosses a cold loft
Decisions to make first
Axial, centrifugal or inline
Axial fans suit short, straight runs; centrifugal fans cope better with longer ducts; inline fans sit in the loft and are the quietest in the room.
Timer or humidistat
A timer keeps the fan running after the light goes off. A humidistat starts it whenever moisture rises, which suits rooms where people forget.
Rules that apply in England
In England, Approved Document F sets bathroom extract at 15 l/s for an intermittent fan or 8 l/s for continuous extract. Wiring a new fan alters a circuit in a room with a bath or shower, so it is notifiable under Part P.

