- Nation
- England
- Pricing region
- South West
- Postcode areas
- EX, TQ, PL, DT
- Main towns
- Plymouth, Exeter, Paignton, Torquay, Newton Abbot
What do loft conversions for extra rooms in Devon involve?
- New stair within the protected route
- Building control sign-off
- Ensuite where space allows
- Structural design and steelwork
- Fire doors and extended alarm system
- Dormer or roof windows
Which rules apply in Devon?
- 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.
- Smoke alarms on every storey with living accommodation and CO alarms by fixed combustion appliances (other than gas cookers) are required by law.
- 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 Devon?
| 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 Devon
Questions about loft conversions for extra rooms in Devon
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 Devon?
Yes, across the whole of Devon, including Plymouth, Exeter, Paignton.
Who licenses HMOs in Devon?
HMOs in Devon 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 Devon
- Extensions for extra rooms in Devon
- Large HMO conversions (7+ sharers) in Devon
- Escape routes, emergency lighting and fire stopping in Devon
- Ensuite installation in Devon
- Layout changes and room reconfiguration in Devon
- Fire alarm and detection systems in Devon
- Damp, mould and HHSRS repairs in Devon
- Small HMO conversions (3–6 sharers) in Devon