- Nation
- England
- Pricing region
- East Midlands
- Postcode areas
- DE, S, SK, NG
- Main towns
- Derby, Chesterfield, High Peak, Long Eaton, Ilkeston
What do extensions for extra rooms in Derbyshire involve?
- Party wall coordination where needed
- Foundations, structure and roof
- Ensuite drainage and extraction
- Fire separation and detection extended to the new space
- Kitchen or bedroom fit-out
- Building control completion
Which rules apply in Derbyshire?
- 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.
- Council standards often step up at 5 and 6 sharers, for example a separate WC at 5 and a second bathroom from 6.
- A conversion can be a material change of use under the building regulations, so confirm with building control before work starts.
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 Derbyshire?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Single-storey extension, about 15 m² | £35,000 – £60,000 | £33,950 – £58,200 | project |
| Single-storey extension per m² | £1,800 – £4,000 | £1,750 – £3,900 | 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 Derbyshire
- Derby
- Chesterfield
- High Peak
- Long Eaton
- Ilkeston
- Swadlincote
- Staveley
- Belper
- Heanor
- Alfreton
- Dronfield
- Ripley
- Buxton
Questions about extensions for extra rooms in Derbyshire
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.
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 carry out extensions for extra rooms across Derbyshire?
Yes, across the whole of Derbyshire, including Derby, Chesterfield, High Peak.
Who licenses HMOs in Derbyshire?
HMOs in Derbyshire 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 Derbyshire
- Loft conversions for extra rooms in Derbyshire
- Communal kitchen refits in Derbyshire
- Layout changes and room reconfiguration in Derbyshire
- Large HMO conversions (7+ sharers) in Derbyshire
- Ensuite installation in Derbyshire
- House to HMO conversion in Derbyshire
- Bedroom upgrades and room refits in Derbyshire
- Void and between-tenancy refurbs in Derbyshire