An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. Bow is 5 miles east 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
- E3
- Location
- 5 miles east of London
- Council
- London Borough of Tower Hamlets
- Pricing region
- London
What do extensions for extra rooms in Bow involve?
- Heating, insulation and glazing
- Fire separation and detection extended to the new space
- Kitchen or bedroom fit-out
- Party wall coordination where needed
- Ensuite drainage and extraction
Which rules apply in Bow?
Extensions for extra rooms in Bow 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.
- 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.
London Borough of Tower Hamlets: local HMO schemes
| Article 4 (HMO) | In force across the council area Borough-wide Article 4 Direction (C3 to C4) since 2021. |
|---|---|
| Additional licensing | In force across the council area Borough-wide additional licensing 1 Apr 2024-31 Mar 2029. |
| Selective licensing | No scheme found |
Schemes change. Check the council’s current pages for the exact address in Bow before you buy or start work. Source: London Borough of Tower Hamlets HMO licensing page, checked 2026-10-31.
How much do extensions for extra rooms cost in Bow?
| 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 Bow can move the figure either way, which is why we quote after seeing the house.
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.
When do Bow landlords need it?
We usually get the call when:
- Adding a ground-floor room
- A kitchen too small for the number of sharers
Questions about extensions for extra rooms in Bow
Do you handle building control?
Yes, from application to completion certificate.
How far do you travel from Bow?
We cover the whole of Greater London and work UK-wide. For Bow the nearest towns on our list are Stratford (1 miles), Canary Wharf (1 miles), Canning Town (2 miles).
Which council covers HMOs in Bow?
Bow is covered by London Borough of Tower Hamlets. 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 Bow?
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 Bow
- Stratford · 1 mi
- Canary Wharf · 1 mi
- Canning Town · 2 mi
- Leytonstone · 3 mi
- Greenwich · 3 mi
- Islington · 4 mi
- All of Greater London