An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. Tottenham is 7 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
- N17
- Location
- 7 miles north of London
- Council
- London Borough of Haringey
- Pricing region
- London
What do extensions for extra rooms in Tottenham involve?
- Party wall coordination where needed
- Fire separation and detection extended to the new space
- Heating, insulation and glazing
- Ensuite drainage and extraction
- Foundations, structure and roof
Which rules apply in Tottenham?
Extensions for extra rooms in Tottenham 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.
- Building regulations cover structural changes, new partitions, ensuite drainage, fire-resisting construction and notifiable electrical work.
- The Fire Safety Order 2005 applies to the common parts of HMOs, enforced by the fire and rescue authority.
- Council standards often step up at 5 and 6 sharers, for example a separate WC at 5 and a second bathroom from 6.
London Borough of Haringey: local HMO schemes
| Article 4 (HMO) | In force in part of the council area Article 4 Direction (C3 to C4) in force since 2013 for the area set out on the council's map. |
|---|---|
| Additional licensing | In force across the council area Borough-wide additional licensing (all 21 wards) 17 Jun 2024-16 Jun 2029, approved 12 Mar 2024. |
| Selective licensing | In force in part of the council area Selective licensing in 14 eastern wards (incl. Tottenham, Northumberland Park, Seven Sisters, Noel Park) 17 Nov 2022-16 Nov 2027. |
Schemes change. Check the council’s current pages for the exact address in Tottenham before you buy or start work. Source: London Borough of Haringey HMO licensing page, checked 2026-10-31.
How much do extensions for extra rooms cost in Tottenham?
| 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 |
Prices in Tottenham are shown with our regional adjustment for London (above the UK average). Your quote is itemised and fixed in writing once the scope and specification are agreed.
How long does it take?
Most jobs of this kind take 8–14 weeks. If a council deadline applies in Tottenham, tell us at the first call so the programme is built around it.
When do Tottenham landlords need it?
Typical reasons for this work in Tottenham:
- Moving to more sharers with consent
- A kitchen too small for the number of sharers
Questions about extensions for extra rooms in Tottenham
Do you handle building control?
Yes, from application to completion certificate.
How far do you travel from Tottenham?
We cover the whole of Greater London and work UK-wide. For Tottenham the nearest towns on our list are Edmonton (2 miles), Wood Green (2 miles), Walthamstow (2 miles).
Which council covers HMOs in Tottenham?
Tottenham is covered by London Borough of Haringey. 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 Tottenham?
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 Tottenham
- Edmonton · 2 mi
- Wood Green · 2 mi
- Walthamstow · 2 mi
- Stamford Hill · 2 mi
- Muswell Hill · 3 mi
- Enfield Town · 3 mi
- All of Greater London
Other HMO services in Tottenham
- Loft conversions for extra rooms in Tottenham
- Communal kitchen refits in Tottenham
- Layout changes and room reconfiguration in Tottenham
- Large HMO conversions (7+ sharers) in Tottenham
- Ensuite installation in Tottenham
- House to HMO conversion in Tottenham
- Licence condition and schedule-of-works in Tottenham
- Damp, mould and HHSRS repairs in Tottenham