- Nation
- England
- Pricing region
- South West
- Postcode areas
- PL, TR, EX
- Main towns
- Redruth, Falmouth, St Austell, Truro, Camborne
What do small HMO conversions (3–6 sharers) in Cornwall involve?
- Interlinked smoke and heat detection
- Electrical upgrades and certificate
- Locks, door closers and thumb-turn locks on the exit route
- Room-by-room size check before any work starts
- Decoration and durable flooring
- Fire doors to rooms off the escape route
Which rules apply in Cornwall?
- Licences last up to 5 years and carry conditions on gas and electrical safety, alarms, room sizes and waste.
- Floor area under a ceiling lower than 1.5 m does not count towards the room size, and many councils set larger sizes.
- National rules ask for an adequate number of bathrooms, WCs and basins and suitably located kitchens; numeric ratios are set by each council.
- 7 or more sharers is a sui generis large HMO and normally needs planning permission.
- Smoke alarms on every storey with living accommodation and CO alarms by fixed combustion appliances (other than gas cookers) are required by law.
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 small HMO conversions (3–6 sharers) cost in Cornwall?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Typical 3–4 bed house to a 5–6 bed HMO, all-in | £30,000 – £75,000 | £31,200 – £78,000 | project |
| Conversion works per letting room (walls, linings, electrics, decoration; excludes kitchens, bathrooms and fire systems; our estimate) | £3,500 – £6,500 | £3,650 – £6,750 | letting room |
| Shared bathroom refit | £5,500 – £9,000 | £5,700 – £9,350 | bathroom |
| Interlinked mains alarm system (Grade D type), small HMO (our estimate from installer guides) | £800 – £2,000 | £830 – £2,100 | house |
| FD30S fire door leaf into an existing frame, with seals, closer and hinges, fitted | £300 – £600 | £310 – £620 | door |
Typical time on site: 4–10 weeks. For a figure for your house, try the guide-price tool.
Small HMO conversions (3–6 sharers) by town in Cornwall
Questions about small HMO conversions (3–6 sharers) in Cornwall
Can I keep a lounge in a small HMO?
Yes, and many councils expect some shared living space where bedrooms are at the smaller end of the size range. We plan the layout so the house works for sharers and meets the local standard.
Does a small HMO need a licence?
In England a mandatory licence is needed when five or more people from two or more households share, and smaller HMOs can need one where the council runs additional licensing. Wales still applies a three-storey test, while in Scotland and Northern Ireland every HMO needs a licence. We check the address and tell you which applies before quoting.
Do you carry out small HMO conversions (3–6 sharers) across Cornwall?
Yes, across the whole of Cornwall, including Redruth, Falmouth, St Austell.
Who licenses HMOs in Cornwall?
HMOs in Cornwall are licensed by the local council for the address. Where an area has several councils, each runs its own licensing and planning policies.