An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. Landlords in Worthing (BN11, BN13 and BN14) usually come to us with a council letter, a fire risk assessment or a house they have just bought. We price from whichever you have.
- Area
- West Sussex, England
- Postcodes
- BN11, BN13 and BN14
- Location
- 10 miles west of Brighton
- Pricing region
- South East
What do extensions for extra rooms in Worthing involve?
- Party wall coordination where needed
- Heating, insulation and glazing
- Building control completion
- Fire separation and detection extended to the new space
- Planning route check and drawings
Which rules apply in Worthing?
Extensions for extra rooms in Worthing must satisfy national law for England, the council’s written HMO standards and, where walls, drainage or fire separation change, the building rules. In short:
- 3–6 unrelated sharers is use class C4; changing from a family house is usually permitted development unless an Article 4 direction applies.
- A conversion can be a material change of use under the building regulations, so confirm with building control before work starts.
- Fire precautions follow a risk assessment; the LACORS Housing – Fire Safety guide (2008) is guidance, not law, but many councils base their standards on it.
- Council standards often step up at 5 and 6 sharers, for example a separate WC at 5 and a second bathroom from 6.
How much do extensions for extra rooms cost in Worthing?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Single-storey extension, about 15 m² | £35,000 – £60,000 | £39,200 – £67,200 | project |
| Single-storey extension per m² | £1,800 – £4,000 | £2,000 – £4,500 | m² |
These are typical ranges including VAT, adjusted for South East, where costs run above the UK average. The fixed price for a house in Worthing follows a site visit.
How long does it take?
Typical time on site: 8–14 weeks. We agree the programme with you before starting and send photo updates as the work progresses.
When do Worthing landlords need it?
Typical reasons for this work in Worthing:
- Moving to more sharers with consent
- Adding a ground-floor room
Questions about extensions for extra rooms in Worthing
Will the extension affect neighbours?
Possibly, if it is on or near a boundary. Party wall procedures may apply in England and Wales.
How far do you travel from Worthing?
We cover the whole of West Sussex and work UK-wide. For Worthing the nearest towns on our list are Portslade (7 miles), Littlehampton (7 miles), Hove (9 miles).
Where do I check the HMO rules for an address in Worthing?
With the local council for the address. Councils in England can add additional licensing and Article 4 directions on top of the national rules. Check the council’s website for the exact address before you buy or start work.
How much do extensions for extra rooms cost in Worthing?
Our guide ranges for South East are in the table on this page, and the guide-price tool gives a figure for your house. A fixed written quote follows a free site visit.
Extensions for extra rooms near Worthing
- Portslade · 7 mi
- Littlehampton · 7 mi
- Hove · 9 mi
- Brighton · 10 mi
- Bognor Regis · 14 mi
- Rottingdean · 14 mi
- All of West Sussex
Other HMO services in Worthing
- Loft conversions for extra rooms in Worthing
- Communal kitchen refits in Worthing
- Layout changes and room reconfiguration in Worthing
- Large HMO conversions (7+ sharers) in Worthing
- Ensuite installation in Worthing
- House to HMO conversion in Worthing
- EPC and energy upgrades in Worthing
- Sound insulation in Worthing