In short: An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. In Scottish Borders 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
- TD, EH, ML
- Main towns
- Hawick
What do extensions for extra rooms in Scottish Borders involve?
- Foundations, structure and roof
- Ensuite drainage and extraction
- Party wall coordination where needed
- Heating, insulation and glazing
- Planning route check and drawings
- Fire separation and detection extended to the new space
Which rules apply in Scottish Borders?
- 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.
- Councils set HMO fire standards through licence conditions, often including emergency lighting in larger HMOs.
- Kitchen, WC and bathroom ratios come from council standards; one WC and one bath or shower per 5 people is a common figure.
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 extensions for extra rooms cost in Scottish Borders?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Single-storey extension, about 15 m² | £35,000 – £60,000 | £33,250 – £57,000 | project |
| Single-storey extension per m² | £1,800 – £4,000 | £1,700 – £3,800 | m² |
Typical time on site: 8–14 weeks. For a figure for your house, try the guide-price tool.
Extensions for extra rooms by town in Scottish Borders
Questions about extensions for extra rooms in Scottish Borders
Do you handle building control?
Yes, from application to completion certificate.
Can I extend an HMO under permitted development?
Some extensions to houses are permitted development, but rules differ for HMOs and by nation and council. We check the address before design.
Do you carry out extensions for extra rooms across Scottish Borders?
Yes, across the whole of Scottish Borders, including Hawick.
Who licenses HMOs in Scottish Borders?
Scottish Borders council licenses HMOs in its area. Every HMO in Scotland needs a licence.
Other HMO services in Scottish Borders
- Loft conversions for extra rooms in Scottish Borders
- Communal kitchen refits in Scottish Borders
- Layout changes and room reconfiguration in Scottish Borders
- Large HMO conversions (7+ sharers) in Scottish Borders
- Ensuite installation in Scottish Borders
- House to HMO conversion in Scottish Borders
- Shared bathroom and shower room refits in Scottish Borders
- EPC and energy upgrades in Scottish Borders