- Nation
- Wales
- Pricing region
- Wales
- Postcode areas
- LL, SY
- Main towns
- Bangor (Gwynedd)
What do small HMO conversions (3–6 sharers) in Gwynedd involve?
- Kitchen enlarged or refitted for the number of sharers
- Interlinked smoke and heat detection
- Room-by-room size check before any work starts
- Decoration and durable flooring
- Second bathroom, shower room or ensuites
- Locks, door closers and thumb-turn locks on the exit route
Which rules apply in Gwynedd?
- Landlords must register with Rent Smart Wales, and those who manage their own lets need a Rent Smart Wales licence.
- England’s national room sizes do not apply in Wales; councils set their own room standards.
- Kitchen and bathroom ratios are set in each council’s HMO standards.
- 3–6 sharers is use class C4, and in Wales changing a house to C4 always needs planning permission; only C4 back to C3 is permitted development.
- Fitness for human habitation rules require mains-powered, interlinked smoke alarms on every storey and CO alarms where there is a gas, oil or solid-fuel appliance.
Welsh councils set their own HMO standards and may run additional licensing. In Wales, changing a house to a C4 HMO always needs planning permission, so check planning first.
How much do small HMO conversions (3–6 sharers) cost in Gwynedd?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Typical 3–4 bed house to a 5–6 bed HMO, all-in | £30,000 – £75,000 | £28,200 – £70,500 | project |
| Conversion works per letting room (walls, linings, electrics, decoration; excludes kitchens, bathrooms and fire systems; our estimate) | £3,500 – £6,500 | £3,300 – £6,100 | letting room |
| Shared bathroom refit | £5,500 – £9,000 | £5,150 – £8,450 | bathroom |
| Interlinked mains alarm system (Grade D type), small HMO (our estimate from installer guides) | £800 – £2,000 | £750 – £1,900 | house |
| FD30S fire door leaf into an existing frame, with seals, closer and hinges, fitted | £300 – £600 | £280 – £560 | 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 Gwynedd
Questions about small HMO conversions (3–6 sharers) in Gwynedd
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.
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.
Do you carry out small HMO conversions (3–6 sharers) across Gwynedd?
Yes, across the whole of Gwynedd, including Bangor (Gwynedd).
Who licenses HMOs in Gwynedd?
Gwynedd council licenses HMOs in its area. Landlords must also register with Rent Smart Wales.