An HMO loft conversion adds one or two letting rooms, often with an ensuite, in the roof space. In Barnes, a town of about 21,000 people in Greater London, the work is planned around the HMO rules for England and the council’s written HMO standards.
- Area
- Greater London, England
- Postcodes
- SW13
- Location
- 6 miles south-west of London
- Pricing region
- London
What do loft conversions for extra rooms in Barnes involve?
- Planning or permitted development check
- Building control sign-off
- Fire doors and extended alarm system
- Feasibility and head-height check
- New stair within the protected route
Which rules apply in Barnes?
The rules below are the England-wide position for this kind of work. Councils add their own standards and schemes on top, so we always check the address in Barnes before we price.
- 7 or more sharers is a sui generis large HMO and normally needs planning permission.
- 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.
- Floor area under a ceiling lower than 1.5 m does not count towards the room size, and many councils set larger sizes.
How much do loft conversions for extra rooms cost in Barnes?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Dormer loft conversion, about 30 m² | £40,000 – £60,000 | £51,200 – £76,800 | project |
| Rooflight loft conversion, about 30 m² | £22,500 – £30,000 | £28,800 – £38,400 | project |
Use these as a starting point for budgeting. Access, condition and the council’s requirements in Barnes can move the figure either way, which is why we quote after seeing the house.
How long does it take?
Typical time on site: 6–10 weeks. We agree the programme with you before starting and send photo updates as the work progresses.
When do Barnes landlords need it?
We usually get the call when:
- A house with usable roof space
- Adding rooms to make an HMO work financially
Questions about loft conversions for extra rooms in Barnes
Does adding a loft room change the HMO planning position?
It can. Going from six to seven sharers moves a house into a large HMO in England, which normally needs planning permission. We check before design.
Which postcodes in Barnes do you work in?
All of them, including SW13, and the surrounding parts of Greater London.
Where do I check the HMO rules for an address in Barnes?
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 loft conversions for extra rooms cost in Barnes?
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.
Loft conversions for extra rooms near Barnes
- Chiswick · 1 mi
- Putney · 2 mi
- Fulham · 2 mi
- Shepherds Bush · 2 mi
- Richmond · 3 mi
- Acton · 3 mi
- All of Greater London
Other HMO services in Barnes
- Extensions for extra rooms in Barnes
- Large HMO conversions (7+ sharers) in Barnes
- Escape routes, emergency lighting and fire stopping in Barnes
- Ensuite installation in Barnes
- Layout changes and room reconfiguration in Barnes
- Fire alarm and detection systems in Barnes
- Damp, mould and HHSRS repairs in Barnes
- Sound insulation in Barnes