An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. Barnet is 10 miles north of London. We price extensions for extra rooms there against England’s HMO rules and the council’s written HMO standards, so work is planned to the standard an inspection looks for.
- Area
- Greater London, England
- Postcodes
- EN5
- Location
- 10 miles north of London
- Pricing region
- London
What do extensions for extra rooms in Barnet involve?
- Kitchen or bedroom fit-out
- Foundations, structure and roof
- Party wall coordination where needed
- Heating, insulation and glazing
- Planning route check and drawings
Which rules apply in Barnet?
Here is what usually applies to a Barnet job of this kind. It is general information rather than legal advice, and the council’s written HMO standards have the final detail.
- 7 or more sharers is a sui generis large HMO and normally needs planning permission.
- Building regulations cover structural changes, new partitions, ensuite drainage, fire-resisting construction and notifiable electrical work.
- Smoke alarms on every storey with living accommodation and CO alarms by fixed combustion appliances (other than gas cookers) are required by law.
- 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 Barnet?
| 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 |
Use these as a starting point for budgeting. Access, condition and the council’s requirements in Barnet can move the figure either way, which is why we quote after seeing the house.
How long does it take?
Allow 8–14 weeks on site for a typical job. Drawings, approvals and long-lead items such as kitchens or fire door sets are booked before we start.
When do Barnet landlords need it?
Typical reasons for this work in Barnet:
- Moving to more sharers with consent
- Adding a ground-floor room
Questions about extensions for extra rooms in Barnet
Is a kitchen extension worth it?
Often, when the existing kitchen limits how many people the council will allow. A bigger kitchen can unlock an extra room.
Which postcodes in Barnet do you work in?
All of them, including EN5, and the surrounding parts of Greater London.
Where do I check the HMO rules for an address in Barnet?
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 Barnet?
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 Barnet
- Hadley Wood · 2 mi
- Potters Bar · 3 mi
- Borehamwood · 3 mi
- Finchley · 3 mi
- Muswell Hill · 5 mi
- Enfield Town · 5 mi
- All of Greater London
Other HMO services in Barnet
- Loft conversions for extra rooms in Barnet
- Communal kitchen refits in Barnet
- Layout changes and room reconfiguration in Barnet
- Large HMO conversions (7+ sharers) in Barnet
- Ensuite installation in Barnet
- House to HMO conversion in Barnet
- Professional and co-living HMO refurbs in Barnet
- Sound insulation in Barnet