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 Monmouthshire, the work is planned around Wales’s HMO rules and the standards the local council publishes.
- Nation
- Wales
- Pricing region
- Wales
- Postcode areas
- NP
- Main towns
- Brynmawr, Abergavenny
What do EPC and energy upgrades in Monmouthshire involve?
- Double or secondary glazing
- LED lighting
- Ventilation to control condensation
- Loft and roof insulation
- Internal or external wall insulation
- A post-works EPC through your assessor
Which rules apply in Monmouthshire?
- 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 Monmouthshire?
| 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 Monmouthshire
Questions about EPC and energy upgrades in Monmouthshire
Will insulation cause condensation?
Not if it is designed with ventilation and vapour control. We always pair insulation with suitable ventilation.
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 Monmouthshire?
Yes, across the whole of Monmouthshire, including Brynmawr, Abergavenny.
Who licenses HMOs in Monmouthshire?
Monmouthshire council licenses HMOs in its area. Landlords must also register with Rent Smart Wales.
Other HMO services in Monmouthshire
- Damp, mould and HHSRS repairs in Monmouthshire
- Full HMO refurbishment in Monmouthshire
- Commercial and above-shop to HMO in Monmouthshire
- Rewires and EICR remedials in Monmouthshire
- Professional and co-living HMO refurbs in Monmouthshire
- Loft conversions for extra rooms in Monmouthshire
- Escape routes, emergency lighting and fire stopping in Monmouthshire
- Extensions for extra rooms in Monmouthshire