- Nation
- Northern Ireland
- Pricing region
- Northern Ireland
- Postcode areas
- BT
- Main towns
- Bangor (County Down), Banbridge, Holywood
What does commercial and above-shop to HMO in County Down involve?
- Separate entrance and protected escape route
- Sound insulation to floors and party walls
- Survey of structure, services and access
- Windows and thermal upgrades
- Fire separation between the commercial unit and the homes above
- Coordination with planning and building control
Which rules apply in County Down?
- A licence is needed where 3 or more people forming more than two households live as their main home and pay rent; the NI HMO Unit at Belfast City Council licenses for every council.
- All new HMOs need planning permission; councils such as Belfast apply HMO policy areas and limits on concentration.
- New HMOs need building control approval as well as planning permission.
- The NIFRS HMO Fire Safety Guide (July 2026) usually expects Grade D1 interlinked detection in smaller shared houses and a Grade A system with more than 6 occupants or over 200 m².
- Building control requirements apply to new HMOs, including separating walls and floors where relevant.
In Northern Ireland, licensing is run centrally by the NI HMO Unit, and all new HMOs need planning permission and building control approval from the local council.
How much does commercial and above-shop to HMO cost in County Down?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Conversion works per letting room (walls, linings, electrics, decoration; excludes kitchens, bathrooms and fire systems; our estimate) | £3,500 – £6,500 | £3,150 – £5,850 | letting room |
| Panel alarm system (Grade A type), larger HMO | £1,750 – £4,500 | £1,600 – £4,050 | house |
| Acoustic ceiling or floor upgrade, 12–15 m² | £800 – £2,700 | £720 – £2,450 | room |
| Communal HMO kitchen with extra cooking and sink capacity (our estimate from domestic ranges) | £8,000 – £18,000 | £7,200 – £16,200 | kitchen |
| Ensuite shower room added to a bedroom | £4,000 – £10,000 | £3,600 – £9,000 | ensuite |
Typical time on site: 12–24 weeks. For a figure for your house, try the guide-price tool.
Commercial and above-shop to HMO by town in County Down
Questions about commercial and above-shop to HMO in County Down
What about the shop below?
The homes above must be separated from the commercial unit by fire-resisting construction, and the escape route must not pass through the shop. We design the separation as part of the building control application.
Is building control needed?
Yes. Changing commercial space to residential use is a material change of use and needs building regulations approval.
Do you carry out commercial and above-shop to HMO across County Down?
Yes, across the whole of County Down, including Bangor (County Down), Banbridge, Holywood.
Who licenses HMOs in County Down?
HMO licensing in County Down, as everywhere in Northern Ireland, is run by the NI HMO Unit at Belfast City Council. Planning and building control are handled by the local council.
Other HMO services in County Down
- Large HMO conversions (7+ sharers) in County Down
- Escape routes, emergency lighting and fire stopping in County Down
- Sound insulation in County Down
- EPC and energy upgrades in County Down
- Rewires and EICR remedials in County Down
- Layout changes and room reconfiguration in County Down
- Bedroom upgrades and room refits in County Down
- House to HMO conversion in County Down