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 Flintshire, the work is planned around Wales’s HMO rules and the standards the local council publishes.
- Nation
- Wales
- Pricing region
- Wales
- Postcode areas
- CH, LL
- Main towns
- Buckley, Deeside, Flint, Hawarden
What do EPC and energy upgrades in Flintshire involve?
- A post-works EPC through your assessor
- Internal or external wall insulation
- Loft and roof insulation
- Ventilation to control condensation
- Review of the EPC recommendations
- LED lighting
Which rules apply in Flintshire?
- 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 Flintshire?
| 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 Flintshire
Questions about EPC and energy upgrades in Flintshire
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.
Are there grants?
Some schemes support landlords. Eligibility changes, so check the current government and energy company schemes for your nation.
Do you carry out EPC and energy upgrades across Flintshire?
Yes, across the whole of Flintshire, including Buckley, Deeside, Flint.
Who licenses HMOs in Flintshire?
Flintshire council licenses HMOs in its area. Landlords must also register with Rent Smart Wales.
Other HMO services in Flintshire
- Damp, mould and HHSRS repairs in Flintshire
- Full HMO refurbishment in Flintshire
- Commercial and above-shop to HMO in Flintshire
- Rewires and EICR remedials in Flintshire
- Professional and co-living HMO refurbs in Flintshire
- Loft conversions for extra rooms in Flintshire
- House to HMO conversion in Flintshire
- Void and between-tenancy refurbs in Flintshire