- Nation
- England
- Pricing region
- South West
- Postcode areas
- TA, BA, BS, DT
- Main towns
- Mendip, Bath, Weston-super-Mare, Taunton, Yeovil
What do loft conversions for extra rooms in Somerset involve?
- Ensuite where space allows
- Fire doors and extended alarm system
- Structural design and steelwork
- Building control sign-off
- Feasibility and head-height check
- Dormer or roof windows
Which rules apply in Somerset?
- 3–6 unrelated sharers is use class C4; changing from a family house is usually permitted development unless an Article 4 direction applies.
- 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.
- Floor area under a ceiling lower than 1.5 m does not count towards the room size, and many councils set larger sizes.
- Mandatory HMO licence for 5 or more people in 2 or more households (since October 2018); councils can add additional licensing for smaller HMOs.
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 Somerset?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Dormer loft conversion, about 30 m² | £40,000 – £60,000 | £41,600 – £62,400 | project |
| Rooflight loft conversion, about 30 m² | £22,500 – £30,000 | £23,400 – £31,200 | 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 Somerset
Questions about loft conversions for extra rooms in Somerset
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.
How much head height do I need?
As a rule of thumb, about 2.2 metres at the highest point of the existing roof space before any work. Less can work with a dormer or lowered ceilings.
Do you carry out loft conversions for extra rooms across Somerset?
Yes, across the whole of Somerset, including Mendip, Bath, Weston-super-Mare.
Who licenses HMOs in Somerset?
HMOs in Somerset 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 Somerset
- Extensions for extra rooms in Somerset
- Large HMO conversions (7+ sharers) in Somerset
- Escape routes, emergency lighting and fire stopping in Somerset
- Ensuite installation in Somerset
- Layout changes and room reconfiguration in Somerset
- Fire alarm and detection systems in Somerset
- Sound insulation in Somerset
- Professional and co-living HMO refurbs in Somerset