Non-Domestic Energy Assessment Certification (NDEA)

Join our Scheme today

Important notice

Our NDEA certification scheme is now being managed by Elmhurst Energy. Please click the button for more information about Elmhurst’s NDEA accreditation scheme.

Stroma Certification’s NDEA Certification Scheme allows our energy assessor members to work for commercial clients on major UK building stock.

Government Approved

Our NDEA Scheme is approved by the Government for non-domestic lodgements

Technical Support & Auditing

Our dedicated Commercial team will support you over phone and email

ESOS and Section 63

Commercial members can upgrade with ESOS Certification and Section 63 membership

Stroma Certification’s NDEA Scheme

Non-Domestic Energy Assessment Certification (NDEA) is provided by Stroma Certification for the energy assessment of non-domestic buildings. Our certification scheme is authorised by the Department for Levelling Up, Housing & Communities (DLUHC) and allows NDEA members to lodge Energy Performance Certificates (EPCs) for commercial buildings.

EPCs are mandatory upon construction, sale or rental of any non-domestic building, whether new or existing. An assessment must be carried out by an accredited assessor and an EPC generated, which gives the building a rating of A–G (A being the most energy efficient).

Why join our NDEA Certification scheme?

Stroma Certification ensures a great package for our assessor members with highly competitive lodgement fees. We don’t charge you for joining and you won’t be charged membership fees in the first year or thereafter.

We offer regular CPD and training events to help you fulfil your annual CPD obligations (10 hours per year). Non-domestic technical support is also available to members via phone and email.

Members Website

Technical Support

Regular CPDs

Access to approved industry software

Business insurance


“Our Commercial scheme is the fastest-growing in the industry. We have a highly dedicated team providing detailed technical support and advice to NDEA members on a daily basis. Come and join us.”

John Robinson, NDEA Scheme Manager

Our Membership Fees

£0 Annual Certification

£33.69 Lodgement Fee

£130 Service Charge per year (if lodging less than 15 EPCs per annum)

£1.70 EPC Register fee (E&W and NI registers)

£12.10 EST Register Fee (Scotland ONLY)

All quoted prices exclude VAT. Your total lodgement fee will be the fee per lodgement, plus the EPC Register fee. *Our lodgement fees are priced on a sliding scale based on the number of lodgements made per annum.

For more course dates, please view our Course Calendar

Accepted Commercial Software

Stroma Certification accepts lodgement via any of the industry’s leading non-domestic software, including: • iSBEM • IES • Design Builder • Hevacomp • G-ISBEM Standard • G-ISBEM Site Notes • Property Tectonics (lifespan)

In 2017, the Government implemented Minimum Energy Efficiency Standards for domestic and non-domestic properties. Under the MEES regulations a commercial property may not be let unless it meets a minimum EPC rating of ‘E’. Stroma-certified NDEAs can advise landlords and other commercial property stakeholders about which properties are at risk of non-compliance under MEES. By undertaking our MEES training course you can help your customers to avoid costly fines which can be levied for MEES non-compliance and advise on the measures which can be taken to make a non-domestic property more energy efficient.
Stroma Certification's ESOS Certification scheme is designed to certify ESOS Lead Assessors in line with the requirements of the Energy Savings Opportunity Scheme (ESOS). Our ESOS Register is approved by the Environment Agency on behalf of the Department for Business, Energy & Industrial Strategy. By becoming an ESOS Lead Assessor, commercial assessors can work with large organisations to assess and reduce their energy consumption.
Our Membership Fees
• First Year Membership - £0
• Application Pre-Assessment Training (1 Day) - £1,149
• Annual Membership Renewal - £250
All quoted prices exclude VAT.
In 2016, new legislation in Scotland set out that an additional assessment is required for all non-domestic buildings over 1000m2, this became known as a Section 63 Action Plan. Section 63 is applicable to Non-Domestic Energy Assessors. To carry out a Section 63 Assessment, NDEAs will first need to complete a Section 63 training course to become a Section 63 Advisor and then join our certification scheme.
Our Membership Fees
• EST Lodgement Fee - £5.36 (inc.VAT)
• DEC / Advisory Report - £10.00
• Section 63 Action Plan - £19.64 - £24.64
All quoted prices exclude VAT, unless stipulated otherwise.
NDEA Members will have a proportion of your commercial lodgements audited on an annual basis to ensure compliant lodgement activity. We support the ongoing technical compliance of our members through the provision of CPD material including technical bulletins and advisory notes. This will help you towards fulfilling our scheme requirement of at least 10 hours CPD per annum.
Stroma Certification's EPBD Assessor Certification scheme documents are made available to the public, applicants and certified Assessor through a downloadable members pack that contains documents including the following:
EA Agreement-License-Terms and Conditions - To be completed for those Assessors requiring certification or alternatively the online application can be completed.
EA Scheme Members Handbook- Documents the certification scheme processes for granting, refusing, maintaining, renewing, suspending, restoring or withdrawing certification or expanding or reducing the scope of certification.
Impartiality Policy- Documents Stroma Certification's commitment to ensuring impartiality in all aspects of our certification and business activities. Further information is also available on the Consumer Advice page.
Complaints & Appeals Policy - Documents how a complaint or appeal can be notified to Stroma Certification and how it will be dealt with. Further information is also available on the Consumer Advice page.
Support Policy- Documents the means by which Stroma Certification can be contacted concerning EPBD Assessor certification or other business related activities.
ID Photograph Requirements-Documents the format and structure needed for photos to be used to produce the applicable certification ID card.
Fraud Identification Policy- Documents the checks carried out by Stroma Certification in identifying fraudulent activity, and how instances of fraud will be dealt with.
Privacy Policy- Documents Stroma’s commitment and procedures for ensuring that the personal data collected and used in our certification and business activities is in accordance with the General Data Protection Regulation (GDPR) requirements. Further information is also available on the Data Protection page.

If you are unclear on any aspect of the certification process please contact Stroma Certification by emailing or telephone 0345 621 1111.

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