PracticeVideosBlogFlashcardsEspañol
All Practice Exams

107+ Free DEA Level 3 Practice Questions

Pass your Domestic Energy Assessor (DEA) Level 3 (ABBE, UK) exam on the first try — instant access, no signup required.

✓ No registration✓ No credit card✓ No hidden fees✓ Start practicing immediately
~90% Pass Rate
107+ Questions
100% Free

Loading practice questions...

Same family resources

Explore More UK Energy Assessor (DEA/NDEA)

Continue into nearby exams from the same family. Each card keeps practice questions, study guides, flashcards, videos, and articles in one place.

Non-Domestic Energy Assessor (NDEA) Level 4 (ABBE, UK)

Practice Questions
2026 Statistics

Key Facts: DEA Level 3 Exam

13

Age Bands (A-M)

RdSAP 10

10 years

EPC Validity

UK Government

Band E

Minimum MEES Rating

MEES Regulations

5 surveys

Portfolio Requirement

ABBE Specification

The DEA Level 3 qualification requires completing a portfolio of 5 mock property energy assessments and passing multiple-choice exams. It is the mandatory certificate required to lodge EPCs for domestic sales and rentals in the UK. The syllabus covers the RdSAP 10 conventions, building age bands, solid and cavity wall identification, insulation measurement, and heating/hot water controls.

Sample DEA Level 3 Practice Questions

Try these sample questions to test your DEA Level 3 exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 107+ question experience with AI tutoring.

1Which of the following is the primary piece of health and safety legislation governing the conduct of a Domestic Energy Assessor on site in the UK?
A.The Health and Safety at Work etc. Act 1974
B.The Management of Health and Safety at Work Regulations 1999
C.The Construction (Design and Management) Regulations 2015
D.The Workplace (Health, Safety and Welfare) Regulations 1992
Explanation: The Health and Safety at Work etc. Act 1974 is the primary legislation covering occupational health and safety in the UK. It places a general duty on employers and self-employed individuals, such as DEAs, to ensure their own safety and that of others who may be affected by their activities. Other regulations are secondary or specific to certain industries, like construction.
2During a domestic property inspection, an assessor notices what they suspect to be damaged asbestos insulating board (AIB) around a boiler flue. What is the most appropriate course of action?
A.Scrape a small sample of the material for independent laboratory testing.
B.Continue the inspection but avoid touching or disturbing the suspected material, and note it in the assessment.
C.Immediately terminate the inspection, evacuate the property, and contact the local council.
D.Spray the material with water to prevent fibers from spreading and proceed with the survey.
Explanation: If suspected asbestos-containing material (ACM) is identified, the assessor must not disturb it or take samples, as this is outside their scope of practice. They should proceed with the assessment safely, avoiding any contact with the material, and record its presence or potential risk in their notes and risk assessment. Only licensed professionals should handle or sample asbestos.
3A DEA is preparing to inspect a loft space that has no fixed ladder, no boarding, and no electric lighting. Under standard health and safety guidance, how should the assessor inspect the loft?
A.Refuse to inspect the loft space entirely and mark it as 'no access' in the software.
B.Enter the loft by stepping carefully on the ceiling joists, using a portable torch for light.
C.Perform a head-and-shoulders inspection from a secured ladder without fully entering the unboarded loft.
D.Ask the homeowner to enter the loft on their behalf to take photos of the insulation.
Explanation: For safety reasons, if a loft has no boarding or safety walkway, the assessor should not fully enter or walk on the joists due to the risk of falling through the ceiling. A 'head-and-shoulders' inspection from a stable ladder is the standard and safest method to gather the required data (such as insulation thickness and joist direction) without putting themselves at risk.
4An assessor is carrying out a survey as a lone worker in an empty property. Which of the following is the most effective safety control measure?
A.Carrying a personal attack alarm in their pocket.
B.Informing a designated contact of their location, estimated duration, and checking in before and after the survey.
C.Leaving the front door wide open so that passers-by can hear if there is an emergency.
D.Conducting the survey only during peak daylight hours between 12:00 PM and 2:00 PM.
Explanation: A robust check-in system with a designated contact (or lone worker app) is the most effective control measure for lone working. It ensures that if the assessor fails to check in after a set time, emergency procedures can be initiated. Other measures like alarms or daytime working are helpful, but do not guarantee a response if the assessor is incapacitated.
5Under GDPR and UK data protection law, what must a DEA do when handling a client's personal details and property data?
A.Keep client contact details indefinitely in case of future marketing opportunities.
B.Store all client records securely and only retain personal data for as long as necessary or required by their accreditation scheme.
C.Share the property data with local estate agents to help promote the property.
D.Avoid collecting any client names or addresses during the booking process.
Explanation: Under the Data Protection Act 2018 (and GDPR), personal data must be stored securely and not kept longer than necessary. However, accreditation schemes require assessors to keep their survey data and evidence files for a minimum period (usually 10 years) to support audits. Data retention must strike a balance between these regulatory and professional requirements.
6Which of the following is a mandatory requirement for a DEA to legally produce and lodge an Energy Performance Certificate (EPC) in the UK?
A.Membership in the Royal Institution of Chartered Surveyors (RICS).
B.Registration with an approved government-approved Accreditation Scheme.
C.A minimum of five years' experience in the construction sector.
D.Registration as a chartered architect with the ARB.
Explanation: To legally produce and lodge an EPC, a DEA must be a member of an active, government-approved accreditation scheme. The accreditation scheme monitors the assessor's quality through regular audits, provides professional indemnity insurance, and manages access to the central national registry (such as the Landmark database in England and Wales).
7If a tenant refuses to allow a DEA access to a bedroom during an inspection, how should the assessor handle this situation?
A.Use force to enter the room, as they have a legal right of entry to complete the EPC.
B.Respect the tenant's decision, complete the inspection of the accessible areas, and record the room as 'no access' with photographic evidence.
C.Ask the landlord to lock the tenant out of the property so the inspection can be completed.
D.Cancel the inspection entirely and report the tenant to the local police.
Explanation: A DEA has no legal right of forced entry. If a tenant or occupier denies access to a room, the assessor must respect their privacy, complete the survey of all other accessible areas, and document the refusal. They must take photographic evidence of the closed door and keep written notes explaining why that specific area was not inspected to protect themselves in case of a future audit.
8What is the standard procedure for a DEA if a client objects to the energy rating on a lodged EPC and threatens to file a complaint?
A.Immediately change the inputs in the software to give a better rating and appease the client.
B.Delete the lodged EPC from the national register so that it is no longer visible.
C.Explain the calculation methodology clearly, offer to review any documentary evidence they can provide, and refer them to the scheme's formal complaints procedure if unresolved.
D.Ignore the client's communications, as lodged EPCs are final and cannot be disputed.
Explanation: If a client disputes an EPC, the DEA should professionally explain that the rating is generated by government-approved software (RdSAP) based on objective observations. The assessor should offer to review any valid documentary evidence (e.g., certificates for cavity insulation or double glazing) that could justify updating the inputs. If the dispute remains unresolved, the DEA must provide details of their accreditation scheme's formal complaints process.
9A DEA is preparing to inspect a property and needs to determine its construction age band. The property was built in 1978. According to the RdSAP age band tables for England and Wales, which age band does this fall into?
A.Age Band E
B.Age Band F
C.Age Band G
D.Age Band H
Explanation: According to the RdSAP 10 age band tables for England & Wales, Age Band F covers properties constructed between 1976 and 1982. Age Band E covers 1967-1975, Band G covers 1983-1990, and Band H covers 1991-1995.
10Under RdSAP conventions, if a property has a date stone indicating 'Built 1895', but the assessor has no other records, which age band should be entered?
A.Age Band A
B.Age Band B
C.Age Band C
D.Age Band D
Explanation: Age Band A in England and Wales applies to all domestic properties constructed before 1900. Since the date stone indicates the property was built in 1895, it must be assigned to Age Band A.

About the DEA Level 3 Exam

The ABBE Level 3 Certificate in Domestic Energy Assessment is the official UK qualification required to operate as a Domestic Energy Assessor (DEA). Licensed assessors are qualified to inspect existing dwellings, enter data into RdSAP software, and produce Energy Performance Certificates (EPCs). The curriculum covers professional on-site conduct, pre-inspection preparation, property inspections (walls, roof, floor, heating, lighting, glazing), and producing compliant EPCs in line with government standards.

Assessment

Multiple-choice exam + portfolio of 5 property inspections

Time Limit

Varies by center

Passing Score

Portfolio competence & exam pass

Exam Fee

Included in course fee (£250 - £1,500) (ABBE (Awarding Body for the Built Environment))

DEA Level 3 Exam Content Outline

15%

Safe, Effective and Professional Practice

Health & safety, risk assessment, asbestos, lone working, and customer service.

15%

Pre-Inspection Preparation

Determining building age bands, checking Land Registry or utility connection records, and document verification.

50%

Undertaking Energy Inspections

Wall constructions, loft and roof space insulation, glazing and window types, heating controls, hot water systems, and solar microgeneration.

20%

EPC Production

RdSAP software inputs, U-value defaults, selecting improvement recommendations, and lodgement procedures.

How to Pass the DEA Level 3 Exam

What You Need to Know

  • Passing score: Portfolio competence & exam pass
  • Assessment: Multiple-choice exam + portfolio of 5 property inspections
  • Time limit: Varies by center
  • Exam fee: Included in course fee (£250 - £1,500)

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

DEA Level 3 Study Tips from Top Performers

1Memorize the RdSAP age bands (A to M) and the years they correspond to in England & Wales.
2Understand the visual indicators of solid brick walls (Flemish/English bond) versus cavity walls (stretcher bond).
3Learn the rules for measuring loft insulation depth and how to treat compressed or boarded lofts.
4Study heating system controls: know when a programmer, room thermostat, TRVs, and cylinder thermostats are present and how they interact.
5Understand the Spaulding classification equivalent for energy equipment and when you can overwrite default U-values with documentary evidence.

Frequently Asked Questions

What is a Domestic Energy Assessor (DEA)?

A DEA is a qualified professional who inspects residential properties to calculate their energy efficiency. Using the RdSAP methodology, they produce and lodge Energy Performance Certificates (EPCs), which are legally required whenever a property is constructed, sold, or rented in the UK.

What is the difference between SAP and RdSAP?

SAP (Standard Assessment Procedure) is the detailed calculation method used for new-build dwellings. RdSAP (Reduced Data SAP) is the simplified version used for existing dwellings, where default values based on the building age band are used when specific details (like insulation thickness behind a wall) cannot be inspected directly.

How are properties aged in RdSAP?

Properties are assigned one of 13 age bands (A to M) representing their construction year (e.g. Band A for pre-1900, up to Band M for 2023 onwards). These age bands dictate the default U-values for walls, floors, and roofs based on building regulations in force at the time.

What is the minimum EPC rating for private renting in the UK?

Under current MEES (Minimum Energy Efficiency Standards) regulations, a privately rented property must have an EPC rating of at least Band E. Landlords whose properties are Band F or G must perform upgrades (up to a cost cap of £3,500) to reach Band E, or register a valid exemption.