In short: HMO energy upgrades improve the energy performance certificate (EPC) rating and cut running costs: loft and wall insulation, heating and controls, glazing, ventilation and lighting. Across Conwy, the work is planned around Wales’s HMO rules and the standards the local council publishes.
- Nation
- Wales
- Pricing region
- Wales
- Postcode areas
- LL
- Main towns
- Colwyn Bay, Llandudno
What do EPC and energy upgrades in Conwy involve?
- Review of the EPC recommendations
- A post-works EPC through your assessor
- Ventilation to control condensation
- Loft and roof insulation
- LED lighting
- Heating, hot water and smart controls
Which rules apply in Conwy?
- Rented homes must meet at least EPC E. Whether the planned EPC C standard will apply in Wales has not yet been confirmed.
- Councils assess hazards, including damp and mould, under the HHSRS, alongside the fitness for human habitation rules for occupation contracts.
- 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.
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 EPC and energy upgrades cost in Conwy?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Loft insulation, whole house | £650 – £1,250 | £610 – £1,200 | house |
| Internal wall insulation | £60 – £100 | £60 – £90 | m² of wall |
Typical time on site: 2–15 working days. For a figure for your house, try the guide-price tool.
EPC and energy upgrades by town in Conwy
Questions about EPC and energy upgrades in Conwy
Are there grants?
Some schemes support landlords. Eligibility changes, so check the current government and energy company schemes for your nation.
Which upgrade gives the best EPC improvement?
It depends on the house. Loft insulation and heating controls are often the cheapest gains; wall insulation and heating systems make larger differences.
Do you carry out EPC and energy upgrades across Conwy?
Yes, across the whole of Conwy, including Colwyn Bay, Llandudno.
Who licenses HMOs in Conwy?
Conwy council licenses HMOs in its area. Landlords must also register with Rent Smart Wales.
Other HMO services in Conwy
- Damp, mould and HHSRS repairs in Conwy
- Full HMO refurbishment in Conwy
- Commercial and above-shop to HMO in Conwy
- Rewires and EICR remedials in Conwy
- Professional and co-living HMO refurbs in Conwy
- Loft conversions for extra rooms in Conwy
- Shared bathroom and shower room refits in Conwy
- Communal kitchen refits in Conwy