Assessors: How does it work?

Energy efficient retrofits

We give homeowners and landlords direct access to the appointment booking system of our panel of Assessors. Benefit from receiving a healthy and rapidly growing sales pipeline of retrofit assessments and post evaluation surveys in your area.

Who should apply?

Experienced, qualified PAS 2035 Assessors willing to attend a one day upskilling course run by Elmhurst Energy. Our Net Zero Retrofit Assessors will conduct assessments and post installation evaluation of properties undergoing lender financed retrofits.

Registration Process


You will be asked to confirm that you have the experience and capability to deliver the onsite assessments.


You will be required to agree to our terms and conditions and those of the TrustMark Code of Conduct and TrustMark Consumer Charter.


We will need to see evidence that your business has adequate insurance in place.


You will be required to submit certain documents e.g. PAS 2035 certificate, etc.


 You or your employees will need to undergo regular onsite inspections in line with the Net Zero Retrofit Framework scheme requirements and Code of Practice set by TrustMark. 

Submitting an application could not be quicker or easier. Sign up to the Retrogreen With You All The Way™ service and complete the application form online and we will get back to you within 3 working days.

What will you be your responsibilities?

How does everyone benefit?

What are the assessors benefits?

What are the lender and property portfolio owner benefits?

What are the consumer benefits?


We charge an annual fee for an assessor to receive Pre-installation and Post-evaluation assessment bookings in their area. Discounts apply if registering more than one assessor. All prices exclude VAT.


Number of Surveyors


Number of Surveyors

First Year Discount 40% Annual Cost / registered surveyor (ex VAT)
Activity 1-19 20-49 50-99 100+
Assessment & Evaluation £69.00 £65.00 £62.00 £59.00