In short: An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. Across Greater Manchester, the work is planned around England’s HMO rules and the standards the local council publishes.
- Nation
- England
- Pricing region
- North West
- Postcode areas
- M, OL, BL, SK
- Main towns
- Manchester, Oldham, Wigan, Bolton, Stockport
What do extensions for extra rooms in Greater Manchester involve?
- Heating, insulation and glazing
- Foundations, structure and roof
- Party wall coordination where needed
- Ensuite drainage and extraction
- Kitchen or bedroom fit-out
- Fire separation and detection extended to the new space
Which rules apply in Greater Manchester?
- 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.
- 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.
- Council standards often step up at 5 and 6 sharers, for example a separate WC at 5 and a second bathroom from 6.
- 7 or more sharers is a sui generis large HMO and normally needs planning permission.
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 Greater Manchester?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Single-storey extension, about 15 m² | £35,000 – £60,000 | £33,600 – £57,600 | project |
| Single-storey extension per m² | £1,800 – £4,000 | £1,750 – £3,850 | m² |
Typical time on site: 8–14 weeks. For a figure for your house, try the guide-price tool.
Extensions for extra rooms by town in Greater Manchester
- Manchester
- Oldham
- Wigan
- Bolton
- Stockport
- Salford
- Rochdale
- Sale
- Bury
- Altrincham
- Middleton
- Ashton-under-Lyne
- Leigh
- Stretford
- Urmston
- Chadderton
- Eccles
- Tyldesley
- Hyde
- Walkden
- Prestwich
- Radcliffe
- Cheadle Hulme
- Heywood
- Denton
- Stalybridge
- Westhoughton
- Farnworth
- Saddleworth
- Hindley
- Golborne
- Droylsden
- Whitefield
- Swinton
- Royton
- Atherton
- Old Trafford
- Dukinfield
- Failsworth
- Hazel Grove
Questions about extensions for extra rooms in Greater Manchester
Do you handle building control?
Yes, from application to completion certificate.
Will the extension affect neighbours?
Possibly, if it is on or near a boundary. Party wall procedures may apply in England and Wales.
Do you carry out extensions for extra rooms across Greater Manchester?
Yes, across the whole of Greater Manchester, including Manchester, Oldham, Wigan.
Who licenses HMOs in Greater Manchester?
HMOs in Greater Manchester are licensed by the local council for the address. Where an area has several councils, each runs its own licensing and planning policies.
Other HMO services in Greater Manchester
- Loft conversions for extra rooms in Greater Manchester
- Communal kitchen refits in Greater Manchester
- Layout changes and room reconfiguration in Greater Manchester
- Large HMO conversions (7+ sharers) in Greater Manchester
- Ensuite installation in Greater Manchester
- House to HMO conversion in Greater Manchester
- Sound insulation in Greater Manchester
- Student HMO refurbishment in Greater Manchester