In short: An HMO loft conversion adds one or two letting rooms, often with an ensuite, in the roof space. In Renfrewshire we survey first, price each item separately and hand over the certificates and photos a council asks for.
- Nation
- Scotland
- Pricing region
- Scotland
- Postcode areas
- PA
- Main towns
- Paisley, Renfrew, Johnstone, Erskine
What do loft conversions for extra rooms in Renfrewshire involve?
- Fire doors and extended alarm system
- Building control sign-off
- Structural design and steelwork
- Feasibility and head-height check
- Dormer or roof windows
- Planning or permitted development check
Which rules apply in Renfrewshire?
- 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 Renfrewshire?
| 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 Renfrewshire
Questions about loft conversions for extra rooms in Renfrewshire
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 Renfrewshire?
Yes, across the whole of Renfrewshire, including Paisley, Renfrew, Johnstone.
Who licenses HMOs in Renfrewshire?
Renfrewshire council licenses HMOs in its area. Every HMO in Scotland needs a licence.
Other HMO services in Renfrewshire
- Extensions for extra rooms in Renfrewshire
- Large HMO conversions (7+ sharers) in Renfrewshire
- Escape routes, emergency lighting and fire stopping in Renfrewshire
- Ensuite installation in Renfrewshire
- Layout changes and room reconfiguration in Renfrewshire
- Fire alarm and detection systems in Renfrewshire
- EPC and energy upgrades in Renfrewshire
- Sound insulation in Renfrewshire