How Much Does an EPC Assessment Cost in 2026?

An EPC assessment is one of the cheapest parts of the landlord compliance process — typically £60 to £150 depending on the property. Yet it is also one of the most consequential, because the certificate it produces determines whether your property is legal to let, what improvements you need, and whether you face a fine of up to £30,000 from October 2030.

This guide covers what an EPC assessment costs in 2026, what affects the price, what the assessor actually does on site, how to find an accredited assessor, and when to get reassessed after making improvements.

Typical price range

EPC assessment costs in 2026 typically fall within the following ranges:

These are typical market rates for a single assessment. If you have multiple properties, many assessors offer portfolio discounts for batch bookings. Some charge as little as £45–£55 per property for portfolios of ten or more in the same area.

Be cautious of prices significantly below the market range. An EPC that costs £35 may have been produced by an assessor cutting corners — using default assumptions rather than measuring properly, which typically produces a lower score than the property deserves.

What affects the price

Several factors determine where a specific property falls within the price range:

• Property size: Larger properties take longer to assess. A studio flat might take 30–45 minutes; a four-bedroom detached house could take 90 minutes to two hours.
• Location: Assessors in London and the South East tend to charge more than those in the Midlands or North. However, competition also varies by area — in cities with many assessors, prices may be lower.
• Access complexity: Properties where the assessor needs to coordinate with tenants, access multiple storeys, or navigate difficult loft hatches may attract a premium.
• Accreditation body: Assessors are accredited through bodies like Elmhurst Energy, Quidos, Stroma, ECMK or Sterling. Each has its own fee structure, which assessors pass on to varying degrees.
• Urgency: Standard lead times are one to two weeks. If you need an assessment within 24–48 hours, expect to pay a premium of £20–£50.

What the assessment involves

An EPC assessment is a standardised inspection carried out by an accredited Domestic Energy Assessor (DEA). The assessor visits the property and records the following:

• Building fabric: Wall construction type (cavity, solid, timber frame), wall thickness, insulation presence and type. Roof construction and insulation depth. Floor type (solid, suspended timber) and insulation.
• Windows and doors: Glazing type (single, double, triple), frame material, approximate age. Number of external doors.
• Heating system: Boiler type, make and model (or heat pump, storage heaters, etc.). Age and efficiency rating. Central heating controls (programmer, room thermostat, TRVs).
• Hot water: How hot water is produced and whether the cylinder (if present) is insulated.
• Lighting: Proportion of low-energy lighting (LED or CFL) versus traditional incandescent or halogen.
• Renewables: Solar PV panels, solar thermal, wind turbines or other renewable energy generation.
• Dimensions: Room-by-room measurements or total floor area, used to calculate heat loss per square metre.

The assessor does not test or commission any systems. They do not turn on the boiler, run taps, or check electrics. The assessment is purely observational and measurement-based.

How long it takes

The on-site visit typically takes:

• Small flat (1–2 bedrooms): 30–45 minutes
• Mid-sized house (2–3 bedrooms): 45 minutes to 1.5 hours
• Large house (4+ bedrooms): 1–2 hours

After the visit, the assessor inputs the data into approved software (typically Elmhurst SAP, NHER Plan Assessor or similar). The certificate is usually lodged on the EPC register within 24–48 hours of the visit, though some assessors turn certificates around the same day.

Finding an accredited assessor

Only a Domestic Energy Assessor (DEA) accredited by a government-approved scheme can produce a valid EPC. The five approved accreditation bodies in England and Wales are:

• Elmhurst Energy
• Quidos
• Stroma Certification
• ECMK
• Sterling Accreditation

You can search for assessors on the government’s EPC register website or through the accreditation bodies’ own directories. When choosing an assessor, check:

• Their accreditation is current (not lapsed)
• They have experience with your property type
• They carry professional indemnity insurance
• They can provide references or reviews from other landlords

Red flags: cheap unaccredited assessors

The market for EPC assessments includes some operators who cut corners. Warning signs include:

• Prices well below market rate (£30–£40 for a house) — the assessor may be using default assumptions throughout, which almost always produces a lower score.
• No site visit — some assessors produce certificates based on photographs or floor plans alone. This is a breach of their accreditation conditions and the resulting certificate may be invalid.
• Guaranteeing a specific rating — a legitimate assessor cannot guarantee a Band C result. The score is whatever the standardised calculation produces based on the property’s actual characteristics.
• No accreditation number — every accredited DEA has a unique accreditation number. Ask for it and verify it with the accreditation body.

A cheap, inaccurate EPC can cost you far more than the saving. If it underscores your property by a few SAP points, you may be told you need improvements that are not actually necessary. Or worse, if it over-scores your property, you may believe you are compliant when you are not — leaving you exposed to a £30,000 fine from October 2030.

When to get reassessed after improvements

Making energy efficiency improvements does not automatically update your EPC. You must commission a new assessment for the improvements to be reflected on the certificate. Until a new EPC is lodged, your official rating remains whatever the last certificate shows.

The optimal approach is:

• Complete all planned improvements first. There is no point getting reassessed after installing loft insulation if you also plan to upgrade the boiler next month. Wait until everything is done, then get a single reassessment.
• Gather evidence for the assessor. Keep certificates, invoices and specifications for any improvements you have made. If you have installed cavity wall insulation, the installer should have provided a CIGA guarantee certificate. For a new boiler, keep the commissioning certificate showing the make, model and efficiency rating.
• Time it before October 2029. If you are getting reassessed, do it under SAP rather than HEM. A SAP-assessed Band C certificate obtained before October 2029 is valid for 10 years and locks in compliance. See our guide on what to do when your EPC expires for more on timing.

For a practical guide to which improvements deliver the most SAP points for the least cost, see our guide on how to improve your rental property’s EPC rating.