How long is an EPC valid for?

An EPC is valid for 10 years from the date of issue, unless significant changes are made to the property that affect its energy performance.

When must an EPC be provided?

An EPC must be provided when a building is constructed, sold, or let. It must be made available to prospective buyers or tenants.

Whenever a building undergoes a change of use class

Once every ten years, regardless of occupancy or sale

When a building is first connected to the grid supply

When a building is built, sold, or rented

Who can produce an EPC?

EPCs must be produced by accredited energy assessors registered with an approved accreditation scheme.

An accredited domestic or non-domestic energy assessor

Any qualified electrician registered with a competent person scheme

The local authority Building Control officer only

The estate agent marketing the property

Free mock exam

EPCs & Compliance — Level 3 Environmental Technologies Practice

Free topic-focused mock exam: all 25 questions on EPCs & Compliance, drawn from the wider Level 3 Environmental Technologies bank. 35-minute timer, 70% to pass, worked explanation on every question. Use this when you've taken the full mock once and want to drill the topics you got wrong.

Questions: 25
Time limit: 35 min
Pass mark: 70% · 18/25
Question bank: 25

Free, no sign-up. Retake as many times as you like — the questions are reshuffled, with the answer order changed.

Sample questions

01How long is an EPC valid for?
- A5 years
- B1 year
- CIndefinitely
- D10 years
Why: An EPC is valid for 10 years from the date of issue, unless significant changes are made to the property that affect its energy performance.
02When must an EPC be provided?
- AWhen a building is built, sold, or rented
- BOnce every ten years, regardless of occupancy or sale
- CWhen a building is first connected to the grid supply
- DWhenever a building undergoes a change of use class
Why: An EPC must be provided when a building is constructed, sold, or let. It must be made available to prospective buyers or tenants.
03Who can produce an EPC?
- AThe local authority Building Control officer only
- BThe estate agent marketing the property
- CAn accredited domestic or non-domestic energy assessor
- DAny qualified electrician registered with a competent person scheme
Why: EPCs must be produced by accredited energy assessors registered with an approved accreditation scheme.

Common questions

Is the EPCs & Compliance mock exam free?

Yes — 100% free, no sign-up needed. Questions are pulled at random from a substantial bank, with a worked explanation on every question after you submit.

Can I retake the mock exam?

Yes. Every attempt picks a different random selection and reshuffles the options, so each retake gives you genuinely new questions. No limit on retakes.

Does this count towards the real qualification?

No — this is independent practice material. To gain the actual qualification you need to sit the official assessment through an approved provider.