In short: An HMO loft conversion adds one or two letting rooms, often with an ensuite, in the roof space. Across Na h-Eileanan Siar, the work is planned around Scotland’s HMO rules and the standards the local council publishes.
- Nation
- Scotland
- Pricing region
- Scotland
- Postcode areas
- HS, PA
- Main towns
- Isle of Lewis
What do loft conversions for extra rooms in Na h-Eileanan Siar involve?
- Dormer or roof windows
- Fire doors and extended alarm system
- Building control sign-off
- New stair within the protected route
- Structural design and steelwork
- Ensuite where space allows
Which rules apply in Na h-Eileanan Siar?
- Scotland has no C4 use class: up to 5 residents can fall within Class 9 (houses), and HMO planning policy is set by each council, some of which require permission at lower numbers.
- A building warrant may be needed for a change of use or for installing a fire alarm system; check with the council’s building standards service.
- The tolerable standard requires interlinked smoke alarms in the main living room and circulation spaces and a heat alarm in the kitchen; licensed HMOs must meet the council’s higher standard.
- Room sizes are set by each council; East Lothian, for example, uses 6.5 m² for a single room with a shared lounge and kitchen, and 10 m² without.
- Every HMO needs a council licence: 3 or more people who are not all from one or two families, sharing basic amenities. Licences last up to 3 years.
Scottish councils set their own HMO licence standards and planning policies. Every HMO needs a licence, so check the council’s standards before you design the layout.
How much do loft conversions for extra rooms cost in Na h-Eileanan Siar?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Dormer loft conversion, about 30 m² | £40,000 – £60,000 | £38,000 – £57,000 | project |
| Rooflight loft conversion, about 30 m² | £22,500 – £30,000 | £21,400 – £28,500 | 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 Na h-Eileanan Siar
Questions about loft conversions for extra rooms in Na h-Eileanan Siar
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.
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 Na h-Eileanan Siar?
Yes, across the whole of Na h-Eileanan Siar, including Isle of Lewis.
Who licenses HMOs in Na h-Eileanan Siar?
Na h-Eileanan Siar council licenses HMOs in its area. Every HMO in Scotland needs a licence.
Other HMO services in Na h-Eileanan Siar
- Extensions for extra rooms in Na h-Eileanan Siar
- Large HMO conversions (7+ sharers) in Na h-Eileanan Siar
- Escape routes, emergency lighting and fire stopping in Na h-Eileanan Siar
- Ensuite installation in Na h-Eileanan Siar
- Layout changes and room reconfiguration in Na h-Eileanan Siar
- Fire alarm and detection systems in Na h-Eileanan Siar
- Damp, mould and HHSRS repairs in Na h-Eileanan Siar
- Fire doors in Na h-Eileanan Siar