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Domestic Retrofit Assessment Course

Gain an ABBE Level 3 Certificate in Domestic Retrofit Assessment - a necessary requirement for projects receiving funding for energy efficiency upgrades under government schemes, such as ECO.

Delivered online through partner, Synergy Training, this qualification overs all aspects of becoming a PAS 2035 Retrofit Assessor.

For a limited time only, GTEC can offer retrofit assessor & co-ordinator training at a reduced rate, thanks to government funding.

Funded courses will be allocated on a first come, first serve basis, so book now to secure your place.

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At a glance

Cost icon

Course cost

£599.00 exc. VAT

Duration icon

Course duration

Self-paced Online



Course information

The ABBE Level 3 Certificate in Retrofit Assessment is an essential qualification for PAS 2035 Retrofit Assessors. 

Retrofit Assessors are responsible for assessing and reporting on home energy efficiency recommendations, such as insulation, draught proofing and double/triple glazed windows, as outlined in standard PAS 2035 and in accordance with TrustMark. 

Energy efficiency upgrades are a key part of lowering carbon emissions, reducing energy bills and helping end-users get the most of heat pumps and other renewable technologies. Projects benefitting from government funding, such as ECO4, must be assessed by a PAS 2035 Retrofit Assessor.


The Level 3 Certificate uses a mix of online learning and assessment.

The course is self-paced.

What's included icon

This qualification is designed to cover all aspects of PAS2035 Retrofit Assessor role:

  • Carrying out a retrofit assessment
  • Producing a condition report
  • The principles and standards of retrofit:
    • Understanding building structures
    • Understanding of energy upgrade measures and their benefits – insulation, draught proofing etc.
    • Appraisal of buildings
    • Occupancy assessments 
Course outline icon

The ECO 4 (Energy Company Obligation) scheme is a government energy efficiency program in the UK aimed at reducing carbon emissions and tackling fuel poverty. It obliges larger energy suppliers to help households with energy-saving measures. Eligible recipients include people on low incomes and/or those with respiratory problems, such as Asthma.

The ECO4 came into force on 1st July 2022. It replaced the ECO3 scheme which closed in March 2022. Energy efficiency measures installed from April 2022 are covered by ECO4. ECO4 will continue until 31st March 2026.

To apply for the ECO Affordable Warmth Scheme, you need to contact an energy supplier participating in the scheme. Eligibility depends on factors such as income, benefits received, and the current energy efficiency of your home.

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