An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. Landlords in Edmonton (EN3, N9 and N18) 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
- Greater London, England
- Postcodes
- EN3, N9 and N18
- Location
- 9 miles north of London
- Council
- London Borough of Enfield
- Pricing region
- London
What do extensions for extra rooms in Edmonton involve?
- Foundations, structure and roof
- Party wall coordination where needed
- Building control completion
- Ensuite drainage and extraction
- Heating, insulation and glazing
Which rules apply in Edmonton?
Extensions for extra rooms in Edmonton 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:
- 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.
- 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.
London Borough of Enfield: local HMO schemes
| Article 4 (HMO) | In force across the council area Borough-wide Article 4 Direction (C3 to C4) since 2013. |
|---|---|
| Additional licensing | In force across the council area Borough-wide additional licensing 1 Sep 2025-31 Aug 2030. |
| Selective licensing | In force in part of the council area Renewed in two designations (13 areas incl. Edmonton Green, Enfield Lock, Ponders End; plus New Southgate, Palmers Green, Southgate Town) 1 Sep 2026-31 Aug 2031. |
Schemes change. Check the council’s current pages for the exact address in Edmonton before you buy or start work. Source: London Borough of Enfield HMO licensing page, checked 2026-10-31.
How much do extensions for extra rooms cost in Edmonton?
| 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 Edmonton 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 Edmonton landlords need it?
Typical reasons for this work in Edmonton:
- Moving to more sharers with consent
- A kitchen too small for the number of sharers
Questions about extensions for extra rooms in Edmonton
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 Edmonton do you work in?
All of them, including EN3, N9 and N18, and the surrounding parts of Greater London.
Which council covers HMOs in Edmonton?
Edmonton is covered by London Borough of Enfield. We read the council’s written HMO standards before pricing, and you should check the licence position for the exact address.
How much do extensions for extra rooms cost in Edmonton?
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 Edmonton
- Tottenham · 2 mi
- Enfield Town · 2 mi
- Chingford · 3 mi
- Walthamstow · 3 mi
- Wood Green · 3 mi
- Woodford Green · 4 mi
- All of Greater London
Other HMO services in Edmonton
- Loft conversions for extra rooms in Edmonton
- Communal kitchen refits in Edmonton
- Layout changes and room reconfiguration in Edmonton
- Large HMO conversions (7+ sharers) in Edmonton
- Ensuite installation in Edmonton
- House to HMO conversion in Edmonton
- Escape routes, emergency lighting and fire stopping in Edmonton
- Sound insulation in Edmonton