In short: An HMO extension adds space to a shared house, usually a ground-floor bedroom with ensuite or a bigger communal kitchen. In Ceredigion we survey first, price each item separately and hand over the certificates and photos a council asks for.
- Nation
- Wales
- Pricing region
- Wales
- Postcode areas
- SA, SY
- Main towns
- Aberystwyth
What do extensions for extra rooms in Ceredigion involve?
- Foundations, structure and roof
- Fire separation and detection extended to the new space
- Building control completion
- Heating, insulation and glazing
- Party wall coordination where needed
- Planning route check and drawings
Which rules apply in Ceredigion?
- 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.
- Building regulations cover structural work, partitions, drainage, fire-resisting construction and electrics; confirm with building control whether the conversion is a material change of use.
- Council HMO standards and the fire risk assessment set detection, fire doors and escape routes.
- Kitchen and bathroom ratios are set in each council’s HMO standards.
- More than 6 sharers is a sui generis HMO and needs planning permission; councils such as Cardiff apply concentration limits.
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 extensions for extra rooms cost in Ceredigion?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Single-storey extension, about 15 m² | £35,000 – £60,000 | £32,900 – £56,400 | project |
| Single-storey extension per m² | £1,800 – £4,000 | £1,700 – £3,750 | 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 Ceredigion
Questions about extensions for extra rooms in Ceredigion
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.
Is a kitchen extension worth it?
Often, when the existing kitchen limits how many people the council will allow. A bigger kitchen can unlock an extra room.
Do you carry out extensions for extra rooms across Ceredigion?
Yes, across the whole of Ceredigion, including Aberystwyth.
Who licenses HMOs in Ceredigion?
Ceredigion council licenses HMOs in its area. Landlords must also register with Rent Smart Wales.
Other HMO services in Ceredigion
- Loft conversions for extra rooms in Ceredigion
- Communal kitchen refits in Ceredigion
- Layout changes and room reconfiguration in Ceredigion
- Large HMO conversions (7+ sharers) in Ceredigion
- Ensuite installation in Ceredigion
- House to HMO conversion in Ceredigion
- EPC and energy upgrades in Ceredigion
- Commercial and above-shop to HMO in Ceredigion