https://www.gov.uk/government/news/quality-assurance-at-heart-of-new-2-billion-green-homes-grants

Quality assurance at the heart of new £2 billion green homes grants

Tradespeople are urged to sign up for TrustMark accreditation as part of the new Green Homes Grant scheme.

Builders, plumbers, and other tradespeople across England will need a government-backed seal of approval to provide their services as part of the new £2 billion Green Homes Grant going live at the end of September. Tradespeople must register for TrustMark or Microgeneration Certification Scheme (MCS) accreditation to take part in the scheme.

The Green Homes Grants will give homeowners, including owner-occupiers and social/private landlords, vouchers to install one or more of the following:

Solid wall, under-floor, cavity wall, or roof insulation
Air source or ground source heat pump
Solar thermalIn addition, households can use their voucher for further (secondary) energy-saving measures. These include one or more of the following:

Double or triple glazing/secondary glazing, when replacing single glazing
Upgrading to energy-efficient doors
Hot water tank/appliance tank thermostats/heating controlsThe Simple Energy Saving Advice Service which has been live for a while now will be updated this month to provide homeowners with specific advice relating to the green homes grant and support on improving the energy efficiency of their homes from the Simple Energy Advice service.

Further detail from the supplementary guidance: https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/906544/ghg-additional-information.pdf

Households will need to install at least one of the primary measures qualify for funding.

Insulation: Solid wall, cavity wall, under-floor, loft, flat roof, room in roof, park home.
Low carbon heat: Air source heat pump, ground source heat pump, solar thermal

“Top-ups” are allowed (e.g. additional loft insulation up to the recommended level, solid wall insulation for other walls where a wall has been previously insulated), but replacements are not included.

So long as there is at least one primary measure in the package of works, households will also be able to install secondary measures.

Secondary measures can only be subsidised up to the amount of subsidy provided for primary measures. (e.g. if a household receives £1,000 for primary measures, they can only receive a maximum of £1,000 towards secondary measures).

The secondary measures are:

Draught proofing
Windows and doors: Double/triple glazing (where replacing single glazing), secondary glazing (in addition to single glazing), upgrading to energy-efficient doors (where replacing doors installed prior to 2002).
Heating controls and insulation: appliance thermostats, hot water tank thermostats, hot water tank insulation, smart heating controls, zone controls, delayed start thermostat, thermostatic radiator valves For low-carbon heating to be installed, households will need to have adequate insulation (e.g. wall and loft, where applicable).
These can be installed as part of a package – they do not have to already be in situ.

Eligibility For the general scheme, the following properties are eligible:

All owner-occupied homes (including long-leaseholders, shared ownership)
Landlords of private rented sector domestic properties
Landlords of social sector domestic properties (including LA owned homes)
Park homeowners (for residential sites including Gypsy and Traveller sites)
New-build domestic properties and non-domestic properties are not eligible.

For the low-income scheme, only owner-occupied properties and park homes are eligible.

Households receiving income-based or disability benefits would be eligible for a fully-funded package of measures.