An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. Landlords in Islington (N1, N1C and N7) 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. With students as well as working sharers renting in Islington, we plan bigger jobs for the gap between academic-year tenancies where we can.
- Area
- Greater London, England
- Postcodes
- N1, N1C and N7
- Location
- 2 miles north-east of London
- Pricing region
- London
What do extensions for extra rooms in Islington involve?
- Kitchen or bedroom fit-out
- Foundations, structure and roof
- Ensuite drainage and extraction
- Building control completion
- Party wall coordination where needed
Which rules apply in Islington?
Extensions for extra rooms in Islington 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.
- Smoke alarms on every storey with living accommodation and CO alarms by fixed combustion appliances (other than gas cookers) are required by law.
- 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 Islington?
| 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 Islington 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.
For student houses in Islington, booking by spring is the safest way to make the summer gap.
When do Islington landlords need it?
Typical reasons for this work in Islington:
- A kitchen too small for the number of sharers
- Moving to more sharers with consent
Questions about extensions for extra rooms in Islington
Can I extend an HMO under permitted development?
Some extensions to houses are permitted development, but rules differ for HMOs and by nation and council. We check the address before design.
How far do you travel from Islington?
We cover the whole of Greater London and work UK-wide. For Islington the nearest towns on our list are Highbury (1 miles), Holloway (1 miles), Camden Town (2 miles).
Does a shared house in Islington 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 Islington?
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 Islington
- Highbury · 1 mi
- Holloway · 1 mi
- Camden Town · 2 mi
- Chalk Farm · 2 mi
- London · 2 mi
- Archway · 3 mi
- All of Greater London
Other HMO services in Islington
- Loft conversions for extra rooms in Islington
- Communal kitchen refits in Islington
- Layout changes and room reconfiguration in Islington
- Large HMO conversions (7+ sharers) in Islington
- Ensuite installation in Islington
- House to HMO conversion in Islington
- Small HMO conversions (3–6 sharers) in Islington
- Fire alarm and detection systems in Islington