In short: An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. We carry this out across Lancashire, priced against the HMO rules for England and the council’s own standards.
- Nation
- England
- Pricing region
- North West
- Postcode areas
- PR, BB, LA, FY
- Main towns
- Preston, Burnley, Blackburn, Blackpool, Fylde
What do extensions for extra rooms in Lancashire involve?
- Planning route check and drawings
- Ensuite drainage and extraction
- Kitchen or bedroom fit-out
- Heating, insulation and glazing
- Fire separation and detection extended to the new space
- Foundations, structure and roof
Which rules apply in Lancashire?
- 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.
- 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.
- 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 Lancashire?
| 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 Lancashire
- Preston
- Burnley
- Blackburn
- Blackpool
- Fylde
- Rossendale
- Morecambe
- Lancaster
- Lytham St Annes
- Skelmersdale
- Leyland
- Accrington
- Chorley
- Darwen
- Thornton-Cleveleys
- Nelson (Lancashire)
- Fleetwood
- Ormskirk
- Rawtenstall
- Colne
Questions about extensions for extra rooms in Lancashire
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.
Do you handle building control?
Yes, from application to completion certificate.
Do you carry out extensions for extra rooms across Lancashire?
Yes, across the whole of Lancashire, including Preston, Burnley, Blackburn.
Who licenses HMOs in Lancashire?
HMOs in Lancashire 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 Lancashire
- Loft conversions for extra rooms in Lancashire
- Communal kitchen refits in Lancashire
- Layout changes and room reconfiguration in Lancashire
- Large HMO conversions (7+ sharers) in Lancashire
- Ensuite installation in Lancashire
- House to HMO conversion in Lancashire
- Licence condition and schedule-of-works in Lancashire
- HMO fire safety upgrades in Lancashire