How much does a commercial EPC cost?
A commercial EPC is priced on the building, not from a fixed menu. This guide explains the honest ranges by building type, what actually drives the fee, and why the cheapest online quote is rarely the cheapest outcome.
There is no single headline price, and that is the point
A domestic EPC has a broadly fixed price because homes are broadly similar. Commercial premises are not. A single lock-up shop and a 4,200 sqm distribution warehouse are both "a commercial EPC", but the work involved is worlds apart, so the fee is too. Anyone quoting one flat price for every non-domestic building, sight unseen, is either guessing or cutting a corner that will show up later in the rating.
As a realistic market guide, a small single shop or office suite assessed at SBEM Level 3 typically starts from around £120 to a few hundred pounds plus VAT. Larger multi-zone buildings, warehouses, hotels and complex premises assessed at SBEM Level 4, or the most complex buildings needing a Level 5 DSM model, run from several hundred pounds to £1,000 or more, because the assessor has to survey and model every heating and cooling system and every zone. These are indicative figures, not our fixed prices; we give a firm quote once we know the basics of your building.
What drives the fee
Five things set the price of a commercial EPC, and none of them is a mark-up:
- Total floor area. More area means more to survey and model.
- Assessment level. SBEM Level 3 (small, simple premises), SBEM Level 4 (larger or multi-service buildings, and all new-build), or DSM Level 5 (the most complex buildings, with atria or advanced HVAC controls SBEM cannot model reliably). The right level is set by the building, not chosen to inflate the fee.
- Number of heating and cooling systems. Each system is modelled separately.
- Number of zones. A single open shop is one zone; a hotel with kitchens, dining, cellars and letting rooms is many.
- Site access. Getting into plant rooms and every zone at survey affects how long the job takes.
A common misconception is that "big" automatically means "expensive". It does not: an unheated or lightly-heated storage shed can be quicker to assess than a small, heavily-serviced office. Complexity, not raw size, is what moves the fee.
Indicative fees by building type
The ranges below are drawn from typical floor areas and market fees for each building type. They are a starting point for budgeting, not a quote.
| Building type | Typical floor area | Indicative fee |
|---|---|---|
| Offices | 100-2,000 sqm floor area | £150-£600 (small suite to whole floor) |
| Retail, Shops & Units | 40-800 sqm floor area | £120-£450 (single unit) |
| Industrial Units & Warehouses | 250-10,000+ sqm floor area | £250-£1,200 (small unit to large distribution shed) |
| Hospitality (Pubs, Restaurants & Hotels) | 150-3,000 sqm floor area | £250-£900 |
| Healthcare & Care | 300-4,000 sqm floor area | £300-£1,000 |
| Mixed-Use Premises | 80-1,500 sqm commercial floor area | £200-£700 for the commercial element |
Indicative market ranges plus VAT, for the commercial element only. Your fee depends on the building's floor area, services, zones, assessment level and site access. Get a firm quote for your premises.
Why the cheapest online EPC can be the most expensive mistake
A legally valid non-domestic EPC must be produced by an accredited Non-Domestic Energy Assessor and lodged on the national register. For anything beyond the very simplest building, an accurate rating needs a proper on-site survey of the fabric, the heating, cooling and ventilation systems and the zones. A remote or rushed "assessment" risks a wrong rating, which is worse than useless: it can under-state your rating and trigger a MEES problem, or over-state it and be challenged in a transaction. Because the certificate underpins a sale, a letting or your compliance position, getting it right on the first survey is far cheaper than getting it wrong at completion.
What you are actually paying for
The fee buys more than a PDF. It buys an accredited assessor's survey, a correctly-levelled SBEM or DSM model, a certificate lodged on the national register and valid for ten years, a ranked list of improvement recommendations, and a clear answer on where you stand for MEES and the proposed EPC B by 2031 standard for buildings over 1,000 sqm. That compliance answer is the part a cheap remote certificate leaves out.
For the official position on when a commercial EPC is required, see commercial EPC requirements on GOV.UK.
Cost questions
How much does a commercial EPC cost?
A commercial EPC is priced on the building, not from a fixed menu, because the work varies. A small single shop or office suite assessed at SBEM Level 3 typically runs from around £120 to a few hundred pounds. Larger multi-zone buildings, warehouses, hotels and complex premises assessed at SBEM Level 4, or the most complex buildings needing a Level 5 DSM model, cost more, often several hundred to over a thousand pounds, because the assessor must survey and model every heating and cooling system and every zone. The fee is driven by floor area, the number of building services, the assessment level and site access. We give a firm quote once we know those basics.
Who can carry out a commercial EPC?
Only an accredited Non-Domestic Energy Assessor (NDEA) can produce a legally valid commercial EPC. The assessor must be a member of a government-approved accreditation scheme, such as Elmhurst Energy, Stroma/NAPIT, Quidos or ECMK, and qualified to the level your building requires. A certificate produced by anyone not properly accredited, or lodged incorrectly, is not valid, which is why a cheap unaccredited 'EPC' can leave you exposed at exactly the moment you need it, in a sale or a letting.
What is the difference between a Level 3 and a Level 4 commercial EPC?
Both Level 3 and Level 4 use the same government calculation engine, the Simplified Building Energy Model (SBEM). The difference is the building. Level 3 covers smaller, simple premises with straightforward services, a small shop, cafe or single office suite, broadly under 250 sqm. Level 4 covers larger buildings, or those with more sophisticated heating, cooling, ventilation and controls, and all new-build commercial regardless of size. The most complex buildings (atria, automated controls, advanced HVAC that SBEM cannot model reliably) go beyond both to a Level 5 Dynamic Simulation Modelling (DSM) assessment. The right level is set by your building, and it drives both accuracy and cost.
How is a commercial EPC rating calculated?
A commercial EPC rating is calculated by modelling the building's energy performance, not by measuring your actual bills. For most buildings the assessor uses the Simplified Building Energy Model (SBEM), inputting the floor area, construction and fabric, glazing, heating, cooling, ventilation, hot water and lighting for each zone. The most complex buildings are modelled with Dynamic Simulation Modelling (DSM) software instead. The output is a rating from A (most efficient) to G (least efficient) plus a list of recommended improvements. Because it is a standardised model, two assessors surveying the same building thoroughly should reach a very similar rating, which is why a proper on-site survey matters.
How quickly can I get a commercial EPC?
For a straightforward single shop or office, an assessment can often be surveyed and lodged within a few working days, sometimes faster where the property is simple and access is easy. Larger, multi-zone or complex buildings needing a Level 4 SBEM or a Level 5 DSM model take longer, because the survey and modelling are more involved, and access to plant rooms and every zone has to be arranged. The main things that slow it down are site access and building complexity, so booking early, before your sale or letting reaches completion, is the way to avoid holding up the deal.