- Nation
- England
- Pricing region
- East of England
- Postcode areas
- CB, PE, SG
- Main towns
- Peterborough, Cambridge, Wisbech, Saint Neots, Huntingdon
What do loft conversions for extra rooms in Cambridgeshire involve?
- Ensuite where space allows
- Dormer or roof windows
- Structural design and steelwork
- Building control sign-off
- Feasibility and head-height check
- Fire doors and extended alarm system
Which rules apply in Cambridgeshire?
- 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.
- The Fire Safety Order 2005 applies to the common parts of HMOs, enforced by the fire and rescue authority.
- Licensed HMOs must meet national minimum bedroom sizes: 6.51 m² for one person aged 10 or over, 10.22 m² for two, and 4.64 m² for a child under 10.
- Licences last up to 5 years and carry conditions on gas and electrical safety, alarms, room sizes and waste.
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 loft conversions for extra rooms cost in Cambridgeshire?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Dormer loft conversion, about 30 m² | £40,000 – £60,000 | £42,400 – £63,600 | project |
| Rooflight loft conversion, about 30 m² | £22,500 – £30,000 | £23,850 – £31,800 | project |
Typical time on site: 6–10 weeks. For a figure for your house, try the guide-price tool.
Loft conversions for extra rooms by town in Cambridgeshire
Questions about loft conversions for extra rooms in Cambridgeshire
Does adding a loft room change the HMO planning position?
It can. Going from six to seven sharers moves a house into a large HMO in England, which normally needs planning permission. We check before design.
Does a loft room need a fire escape window?
In an HMO the main protection is usually a protected stair and fire doors. The building regulations and fire strategy decide the detail.
Do you carry out loft conversions for extra rooms across Cambridgeshire?
Yes, across the whole of Cambridgeshire, including Peterborough, Cambridge, Wisbech.
Who licenses HMOs in Cambridgeshire?
HMOs in Cambridgeshire 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 Cambridgeshire
- Extensions for extra rooms in Cambridgeshire
- Large HMO conversions (7+ sharers) in Cambridgeshire
- Escape routes, emergency lighting and fire stopping in Cambridgeshire
- Ensuite installation in Cambridgeshire
- Layout changes and room reconfiguration in Cambridgeshire
- Fire alarm and detection systems in Cambridgeshire
- Small HMO conversions (3–6 sharers) in Cambridgeshire
- Licence condition and schedule-of-works in Cambridgeshire