An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. For a house in Feltham we start with a measured survey, check the council’s written HMO standards for the number of sharers, and then price each item separately.
- Area
- Greater London, England
- Postcodes
- TW13 and TW14
- Location
- 13 miles west of London
- Pricing region
- London
What do extensions for extra rooms in Feltham involve?
- Fire separation and detection extended to the new space
- Foundations, structure and roof
- Party wall coordination where needed
- Ensuite drainage and extraction
- Planning route check and drawings
Which rules apply in Feltham?
Extensions for extra rooms in Feltham 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.
- National rules ask for an adequate number of bathrooms, WCs and basins and suitably located kitchens; numeric ratios are set by each council.
How much do extensions for extra rooms cost in Feltham?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Single-storey extension, about 15 m² | £35,000 – £60,000 | £44,800 – £76,800 | project |
| Single-storey extension per m² | £1,800 – £4,000 | £2,300 – £5,100 | m² |
These are typical ranges including VAT, adjusted for London, where costs run above the UK average. The fixed price for a house in Feltham 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 Feltham landlords need it?
Typical reasons for this work in Feltham:
- A kitchen too small for the number of sharers
- Moving to more sharers with consent
Questions about extensions for extra rooms in Feltham
Do you handle building control?
Yes, from application to completion certificate.
Do you cover all of Feltham?
Yes. We work across Feltham and the TW13 and TW14 postcode areas, plus the rest of Greater London. Nearby places we also cover include Hanworth, Ashford (Surrey), Hounslow.
Does a shared house in Feltham need an HMO licence?
In England, a mandatory licence is needed for 5 or more people from 2 or more households. Smaller HMOs can need a licence where the council runs additional licensing, which is common in towns with many shared houses. Check the council’s website for the address.
How much do extensions for extra rooms cost in Feltham?
Our guide ranges for London 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 Feltham
- Hanworth · 2 mi
- Ashford (Surrey) · 2 mi
- Hounslow · 3 mi
- Sunbury-on-Thames · 3 mi
- Hampton · 3 mi
- Heston · 3 mi
- All of Greater London
Other HMO services in Feltham
- Loft conversions for extra rooms in Feltham
- Communal kitchen refits in Feltham
- Layout changes and room reconfiguration in Feltham
- Large HMO conversions (7+ sharers) in Feltham
- Ensuite installation in Feltham
- House to HMO conversion in Feltham
- Student HMO refurbishment in Feltham
- Professional and co-living HMO refurbs in Feltham