In most cases, yes — commercial properties need an EPC (Energy Performance Certificate) whenever they’re sold, let or newly built. An EPC rates how energy-efficient a building is on a simple A-to-G scale, where A is the most efficient and G the least, and for commercial — or “non-domestic” — premises it’s usually a legal requirement at the point of a transaction. (“Non-domestic” just means a building that isn’t someone’s home.) But there are genuine exceptions, and the rules confuse people because the same word — “exempt” — is used for two very different things. This guide gives you the straight answer.

When does a commercial property need an EPC?

You’ll generally need a valid commercial EPC at three trigger points:

When you sell the property. The seller must make a valid EPC available to prospective buyers.

When you let it — granting a new lease or tenancy, or renewing in a way that creates a new letting. The landlord is responsible.

When it’s newly built or undergoes a major refurbishment that changes its energy characteristics — the EPC is produced on completion.

The key point: an EPC is triggered by a transaction or completion, not by simply owning a building. If you own a commercial property and you’re not selling, letting or building, you don’t need to rush out and get one — though many owners do, because it’s increasingly asked for by funders, insurers and tenants. For the full picture on who’s responsible and the penalties, see our commercial EPC requirements guide.

Is an EPC a legal requirement for commercial property?

Yes — for most buildings, at the point of sale or let, having a valid EPC is a legal duty under the Energy Performance of Buildings regulations. Marketing a commercial property for sale or to let without a valid EPC (where one is required) can lead to a penalty, typically a percentage of the property’s rateable value within set minimum and maximum limits. On top of that, the Minimum Energy Efficiency Standard (MEES) makes it unlawful to let most commercial property rated below E — so for landlords, the EPC isn’t just paperwork, it can decide whether you can legally let at all.

When is an EPC not required for commercial property?

This is where it gets misread, so let’s separate the two completely different situations people both call “exempt”.

1. Buildings outside the EPC rules altogether. A defined set of building types don’t need an EPC even when sold or let. These include, broadly: – places of worship and buildings used for religious activities; – temporary buildings intended to be used for two years or less; – stand-alone buildings with under 50 m² of useful floor area (very small detached units); – certain industrial sites, workshops and non-residential agricultural buildings with low energy demand; – buildings due to be demolished, where the relevant permissions are in place.

If your building genuinely falls into one of these categories, no EPC is needed for the transaction.

2. MEES exemptions — a different thing entirely. Here the building does have an EPC and does fall under the rules, but the landlord registers an exemption from the minimum E rating — for example because all cost-effective improvements have been made and it still can’t reach E, or because consent (from a tenant, lender or planning authority) was refused. A MEES exemption lets you let a sub-E property lawfully; it does not mean you didn’t need an EPC. You still need the certificate to register the exemption in the first place.

People constantly mix these up — assuming “we’re exempt” means “no EPC needed”, when they actually mean the second kind. We set both out clearly on our commercial EPC exemptions page.

What about listed buildings?

A common myth is that listed buildings are automatically exempt. They’re not. A listed or protected building only falls outside the requirement where meeting the minimum energy performance standards would unacceptably alter its character or appearance — and that has to be genuinely the case, not assumed. Many listed commercial buildings still need an EPC. If you’re unsure, it’s worth getting a view rather than guessing.

So — do you need one?

For the vast majority of commercial buildings being sold, let or built, the answer is yes. The exceptions are narrow and specific, and the word “exempt” is used loosely, so it’s easy to assume you’re in the clear when you’re not. If you’re about to market a property, the safe move is to confirm your position and, if needed, get the certificate produced before it goes on the market. We arrange accredited commercial EPCs UK-wide for a fixed fee — see what is a commercial EPC for the basics, or get a quote.

Request a fixed-fee quote — tell us the property and we’ll confirm whether you need an EPC and the price up front.

In the normal case, the landlord (or the seller) is responsible for the commercial EPC — not the tenant. An EPC (Energy Performance Certificate) rates a building’s energy efficiency on an A-to-G scale, and whenever a commercial property is sold or let, the person disposing of the interest — the seller in a sale, the landlord in a letting — has the legal duty to make a valid EPC available to the prospective buyer or tenant. So if you’re a tenant being asked to produce one before you can take a lease, that’s usually the wrong way round. But there are real situations where it shifts, so it’s worth understanding the detail.

The general rule: the landlord provides it

When a commercial property is let, it’s the landlord’s duty to ensure a valid EPC is available to prospective tenants before the property is marketed and let. The same logic applies to a sale, where the seller carries the duty. This sits under the Energy Performance of Buildings regulations, and the responsibility is on whoever is offering the property, because they control the building and the information about it.

In practice that means: – the landlord commissions and pays for the EPC (it’s a cost of letting the property); – the tenant should be given a copy before committing; and – the tenant does not normally need to produce their own EPC to take a lease.

For the full set of duties and the penalties for getting it wrong, see our commercial EPC requirements guide.

Who actually pays?

Responsibility and payment usually sit with the same party — the landlord — but a lease can shift the cost. Some commercial leases include service-charge or recovery provisions, and occasionally a heads-of-terms negotiation puts the EPC cost on the incoming tenant as a condition. That’s a commercial deal point, not a change in the legal duty: the landlord still has the legal responsibility to ensure a valid EPC exists, even if they’ve agreed the tenant will foot the bill. Always check what the lease or agreement actually says.

When does it fall to the tenant?

There are genuine cases where a tenant ends up responsible — almost always because the tenant becomes the one disposing of an interest:

Sub-letting. If a tenant sub-lets all or part of their space to a sub-tenant, the tenant is now the “landlord” in that sub-letting and takes on the duty to provide an EPC to the sub-tenant.

Assigning the lease. If a tenant assigns (transfers) their lease to someone else, they’re disposing of their interest and may need to provide a valid EPC to the incoming party.

Fit-out or works that require a new EPC. If a tenant carries out works substantial enough to need a new EPC (for example a major refurbishment of their demised area on completion), that can fall to them.

So the simple test is: whoever is selling, letting or sub-letting an interest is the one who must provide the EPC. Most of the time that’s the landlord — but a tenant who passes space on becomes responsible in turn.

What about MEES — the minimum rating?

There’s a second responsibility worth knowing. Under the Minimum Energy Efficiency Standard (MEES), it’s currently unlawful to let most commercial property rated below E. That duty sits squarely with the landlord — it’s the landlord who must ensure the property meets the minimum standard (or register a valid exemption) before letting. A tenant can’t fix a landlord’s MEES problem, and shouldn’t be asked to. This is increasingly important as the minimum standard is set to tighten.

Practical takeaways

Landlords: the EPC is your responsibility. Have a valid one in place before you market the property, factor the cost in, and check your MEES position so the rating doesn’t block the letting.

Tenants: you shouldn’t normally have to provide an EPC to take a lease — ask the landlord for the existing certificate. But if you sub-let or assign, the duty becomes yours.

Either way: if there’s a valid EPC already lodged on the register (they last 10 years), a fresh one usually isn’t needed for each new tenant — you can check the register first.

If you’re a landlord preparing to let, or a tenant who’s just realised the duty is yours after all, we arrange accredited commercial EPCs UK-wide for a fixed fee — see what is a commercial EPC for the basics, or get a quote.

Request a fixed-fee quote — tell us the property and your situation, and we’ll confirm the price up front.

If your commercial building has scored poorly — or you’re facing the minimum rating needed to let it — the good news is that an EPC rating is rarely fixed. A handful of well-chosen measures can often move a building from F or G up to E or beyond. The trick is knowing which changes actually shift the score, because a commercial EPC rates the building and its fixed systems, not your habits. This guide explains the measures that genuinely move the needle, roughly in order of bang-for-buck, and how to plan them.

First, a quick reminder of how the rating is worked out: a commercial EPC is calculated using government-approved software called SBEM (the Simplified Building Energy Model), which models the building’s fabric, heating, cooling, lighting and ventilation. To improve the rating, you have to improve the things SBEM measures — which is why “turn the lights off at night” doesn’t help, but “replace the lighting” does.

Start here: get a recommendations report and target the right measures

Every commercial EPC comes with a recommendations report listing suggested improvements and an indication of each one’s impact. That’s your starting map. But the headline list doesn’t always reflect your building’s biggest weakness — a proper assessment, or a quick conversation with your assessor, will tell you which measures give the most uplift per pound for your specific property. Doing the wrong improvements first is the most common way to waste money here. (We can model this for you — see the call-to-action below.)

1. Upgrade the lighting (usually the best first move)

Lighting is often the single biggest, cheapest win in a commercial building, because it’s a large share of modelled energy use and relatively easy to change: – Switch to LED throughout — older fluorescent tubes and halogen fittings are heavily penalised in the calculation. – Add lighting controls — presence/occupancy sensors, daylight dimming and timers all count, because the software credits controlled lighting.

For many shops, offices and warehouses, a full LED-plus-controls upgrade alone can lift the rating a band or more.

2. Add or improve controls (cheap, high-impact)

Controls tell the software the building is run efficiently, and they’re usually inexpensive relative to their effect: – Heating controls — programmable timers, thermostats and zone controls so you’re not heating empty space. – Building management — even basic time and temperature controls on heating, cooling and ventilation help the modelled score.

Controls are frequently the best value measure after lighting because the capital cost is low.

3. Improve the heating system

Heating is a major driver of a commercial rating, so an inefficient system drags the score down: – Replace old, inefficient boilers with a high-efficiency unit, or move to a heat pump where the building suits it. – Upgrade electric heating — old direct electric heating tends to score poorly; more efficient systems or heat pumps score better. Heating upgrades cost more than lighting or controls but can deliver a large uplift on a building with ageing plant.

4. Tackle insulation and the building fabric

Reducing heat loss improves the rating, though fabric work is usually a bigger job: – Roof and loft insulation — often the most cost-effective fabric measure. – Cavity or solid wall insulation where practical. – Better glazing — draught-proofing and, where justified, upgraded glazing. Fabric improvements are worth modelling case by case; on some buildings they’re transformative, on others the payback is slower than services upgrades.

5. Sort out cooling and ventilation efficiency

For air-conditioned buildings, the cooling system is a big factor: – Service or upgrade air-conditioning to more efficient units and add proper controls. – Improve ventilation efficiency — heat recovery and controlled ventilation are credited in the model.

6. Improve metering — and consider renewables

Metering — adequate sub-metering of energy use is part of a good non-domestic assessment and supports a better-managed, better-scoring building.

On-site renewables — solar PV panels reduce the building’s modelled net energy use and can give a meaningful uplift, especially on a building with a large roof. The capital cost is higher, so model it as part of the wider plan rather than a quick fix.

Plan the measures together, then re-assess

The smartest approach is to model the combination before you spend, so you reach your target rating (E now, and ideally with headroom for the tighter standards expected later this decade) at the lowest cost. Once the work is done, you’ll need a new EPC to capture the improved rating — the old one doesn’t update automatically. For what that assessment costs, see our commercial EPC cost guide; for why the rating matters legally, see minimum EPC rating for commercial property.

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If you’ve booked — or are about to book — a commercial EPC (the official A-to-G energy-efficiency rating for a business or “non-domestic” building), it helps to know exactly what the assessment involves. It’s more straightforward than most people expect: a site visit by an accredited assessor, followed by some modelling and the certificate. This guide walks through the whole process step by step, including what you can do beforehand to make it quick and accurate.

Step 1: Booking and a few quick questions

When you get in touch, we’ll ask a few basics — the property type, rough floor area and postcode, and whether the building has air-conditioning — so we can confirm a fixed-fee quote and the right level of assessment. (Commercial EPCs are graded Level 3, 4 or 5 by how complex the heating, cooling and ventilation are; the building’s services decide which applies.) We then arrange a site visit at a time that suits you. For how pricing works, see our commercial EPC cost guide.

Step 2: What to have ready (this speeds it up)

You don’t need anything for us to do the job, but having a few things to hand makes the survey faster and the rating more accurate: – Floor plans (even rough ones) — they save the assessor measuring everything from scratch. – Details of the heating, cooling and ventilation systems — make, model or age if you have them. – Lighting information — whether it’s been upgraded to LED, and any controls fitted. – Any recent upgrades — new boiler, insulation, glazing, solar panels — with paperwork if available. – Access to all areas, including plant rooms, roof spaces and any separate zones.

If you don’t have these, that’s fine — we can record everything on site; it just takes a little longer.

Step 3: The site visit — what the assessor actually does

This is the core of it. On the day, the accredited non-domestic energy assessor carries out a non-intrusive survey — there’s no drilling, no disruption to trading, and no need to switch anything off. They will: – Measure the building and record floor areas and zones. – Record the construction — walls, roof, floors, windows and insulation, as far as they’re visible or evidenced. – Inspect the heating — type, age and efficiency of the system and its controls. – Check cooling and air-conditioning — whether fitted, and the type. – Note the ventilation — natural or mechanical, and how it’s controlled. – Record the lighting — fitting types (fluorescent, LED, etc.) and any sensors, timers or daylight controls. – Note hot-water provision and any renewables such as solar panels. – Take photos and evidence to support the assessment and satisfy the accreditation scheme’s audit requirements.

How long it takes depends on size and complexity — a small shop might be under an hour, a large multi-zone building considerably longer. The assessor records the building as it is; remember the EPC rates the building and its fixed systems, not how the occupier uses it, so day-to-day habits don’t affect the result.

Step 4: Modelling and producing the certificate

After the visit, the assessor enters everything into government-approved software — most commonly SBEM (the Simplified Building Energy Model) — which calculates the building’s energy performance and produces the A-to-G rating. Alongside the certificate you get a recommendations report suggesting how the rating could be improved, which is the starting point if you need to lift a poor score (see how to improve your commercial EPC rating).

Step 5: Lodgement on the register, and your copy

A commercial EPC only becomes valid once it’s lodged on the national EPC register — the official record that buyers, tenants and solicitors can check. We lodge it and send you your certificate with a fast turnaround after the visit. From the date of lodgement, the EPC is valid for 10 years. If you ever need to confirm it’s on the system, see our guide to how to check a commercial EPC on the register.

In short

One visit, no disruption, a clear rating and report, and a certificate lodged on the official register — usually within a few working days. Having plans and system details ready makes it quicker and more accurate, but it isn’t essential.

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A commercial EPC is an Energy Performance Certificate for a business or “non-domestic” building — anything that isn’t someone’s home, such as an office, shop, restaurant, warehouse or industrial unit. (“Non-domestic” simply means not a dwelling.) It rates how energy-efficient the building is on a simple A-to-G scale, where A is the most efficient and G the least, and it comes with a recommendations report suggesting how the rating could be improved. You’ll usually need a valid one when you sell, let or build commercial premises in the UK.

In short: it’s the official document that tells a buyer, tenant or solicitor how energy-efficient a commercial building is — and, increasingly, whether it can legally be let at all.

What does a commercial EPC actually check?

This is the part most explanations skip. A commercial EPC isn’t based on your energy bills — it rates the building itself and the fixed services in it, regardless of how the current occupier uses it. An accredited assessor records and models:

Construction and fabric — walls, roof, floors, windows and how well they hold heat in (insulation and glazing).

Heating — the type, age and efficiency of the heating system and its controls.

Cooling and air-conditioning — whether the building is air-conditioned, and how efficient that system is.

Ventilation — natural or mechanical, and how it’s controlled.

Lighting — the type of lighting (older fluorescent vs LED) and controls such as sensors and timers.

Hot water — how it’s produced.

Renewables — any on-site generation, such as solar panels.

The assessor enters all of this into government-approved software, which calculates the building’s energy performance and produces the A-to-G rating. Because it’s the building being rated, two businesses in identical units would get the same EPC even if one runs its lights all night and the other doesn’t.

How is it different from a domestic (house) EPC?

People often assume a commercial EPC is just a house EPC for a bigger building. It isn’t. The key differences:

Different method. Homes are assessed using a method called RdSAP. Commercial buildings are assessed using SBEM — the Simplified Building Energy Model, the government’s approved calculation method for non-domestic buildings. (Very large or unusual buildings can use a more detailed method called Dynamic Simulation Modelling, but SBEM covers most cases.)

Graded by complexity. Commercial assessments are classified as Level 3, 4 or 5 depending on how complex the building’s heating, cooling and ventilation are. A simple, naturally ventilated shop is a lower level than a multi-zone office with air-conditioning — which is also why commercial EPCs cost more than domestic ones.

A different qualification. It must be produced by an accredited non-domestic energy assessor — not the same as the domestic assessor who would do a house. Using the right type of assessor matters; a domestic EPC on a commercial building isn’t valid.

Who produces a commercial EPC?

Only an accredited non-domestic energy assessor can produce a valid commercial EPC. They must be registered with a government-approved accreditation scheme, which is how the certificate gets lodged on the official register. When you instruct an assessor, it’s reasonable to ask which scheme they’re accredited with — a genuine provider will tell you. The commercial EPCs we arrange are carried out by accredited professionals registered with the recognised UK schemes, such as Elmhurst Energy, Stroma Certification, CIBSE Certification and Quidos.

How long does a commercial EPC last, and what does it look like?

A commercial EPC is valid for 10 years from the date it’s lodged, unless a newer one replaces it. The certificate shows the A-to-G rating, the building’s details, the assessor’s accreditation, and a separate recommendations report listing potential improvements with an indication of their impact. Once produced, it’s lodged on the national EPC register and you’re sent a copy — it’s the document buyers, tenants and their solicitors will ask to see.

Do you actually need one?

You’ll generally need a valid commercial EPC if you’re selling, letting or building most commercial premises. A handful of building types are exempt, and there’s now a minimum rating you must reach to let most commercial property — both of which catch people out. For the full rules on when one is required, see our guide to commercial EPC requirements; for what it costs, see our commercial EPC cost guide.

Request a fixed-fee quote — tell us the property and we’ll confirm the price up front.

The short answer: in almost all cases, no. If you’re selling or letting a commercial property in England or Wales, you must have a valid EPC (Energy Performance Certificate) — the official A-to-G energy-efficiency rating for the building — available to prospective buyers or tenants. You’re legally required to commission it before you market the property, not after a buyer or tenant is found. There are a few genuine exceptions, and the rules differ in an important way between selling and letting — which is where people get caught out. Here’s the full picture.

Selling without an EPC — what’s required

To sell a commercial property, a valid EPC must exist and be made available to prospective buyers. The rule is about having and disclosing the certificate — the rating itself doesn’t stop a sale. So you can sell a poorly-rated commercial building (even an F or G); you just can’t sell one with no EPC at all (unless it’s a genuinely exempt building — see below). In practice the certificate is needed early, because the buyer’s solicitor will ask for it as part of due diligence, and a missing one can stall completion at the worst possible moment.

Letting without an EPC — stricter, and two separate rules apply

Letting is where it gets stricter, because two rules stack up:

You need a valid EPC to market the property to let and to grant a lease — same as selling.

You also need a good enough rating. Under the Minimum Energy Efficiency Standard (MEES) — the rule that sets a legal minimum EPC rating for letting — it is currently unlawful to let most commercial property rated below E (i.e. F or G) unless you’ve registered a valid exemption.

So for letting, “do I have an EPC?” isn’t the whole question. A landlord can have a perfectly valid EPC and still be unable to let lawfully because the rating is too low. This is the single most common trap, and it’s why we cover it separately on our minimum EPC rating for commercial property guide.

The difference in one line

Selling: you need an EPC to exist and be disclosed — but a poor rating doesn’t block the sale.

Letting: you need an EPC and a rating of at least E — a poor rating does block the letting.

Are there any exceptions?

Yes, but they’re narrow. A commercial building genuinely doesn’t need an EPC at all if it falls into a specific exempt category — for example certain places of worship, temporary buildings in use for two years or less, stand-alone buildings under 50 m², and some low-energy industrial or agricultural buildings (like an unheated warehouse or barn). Listed buildings are a special, often-misunderstood case rather than an automatic exemption. We set all of these out on our commercial EPC exemptions page. Don’t assume yours qualifies — the safe default is that you need one.

Separately, if a building has an EPC but it’s rated F or G, a landlord may be able to register a MEES exemption to let it lawfully for a limited period — that’s a different process from being exempt from needing an EPC at all, and it’s covered on the exemptions page too.

What happens if you sell or let without one?

Failing to make a valid EPC available when required is a breach enforced by Trading Standards. For commercial property the penalty is typically 12.5% of the building’s rateable value, with a default minimum of £500 and a maximum of £5,000 per breach. Letting below the minimum rating in breach of MEES carries its own, larger civil penalties — up to £150,000 per property depending on rateable value and how long the breach lasts. On top of the fines, the practical cost is usually worse: a missing or non-compliant EPC can delay or collapse a deal exactly when momentum matters.

The simple fix

An EPC is quick to arrange and far cheaper than a stalled deal. If you’re getting a property ready to sell or let, sort it early — ideally before it goes on the market. We can assess most commercial buildings and lodge the certificate fast, and tell you straight away whether a poor rating is going to be a problem for letting. For what one costs, see our commercial EPC cost guide; for the full legal requirements, see commercial EPC requirements.

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