When Is an EPC Required in the UK?

If you are about to sell a house, let out a flat, market a commercial unit or complete a new build, one question tends to come up quickly: when is an EPC required? The answer depends on what you are doing with the property, but in many cases the certificate is needed before you start marketing, not later when the paperwork catches up.

That timing matters. A missing EPC can slow down a sale, delay a tenancy, create problems for agents and landlords, and in some cases lead to enforcement action. For owners and property professionals, the safest approach is to check the requirement early and arrange the assessment before it becomes urgent.

When is an EPC required for a property?

An Energy Performance Certificate is usually required when a property is built, sold or let. That applies to both residential and commercial property in most standard situations across Great Britain. The purpose is to show the building's energy efficiency and give prospective buyers or tenants a clear indication of likely energy performance.

For residential sales, the EPC should generally be available when the property is placed on the market. If you are instructing an estate agent, they will normally expect the certificate or evidence that it has been commissioned. For landlords, the same principle applies when granting a new tenancy. A valid EPC must usually be in place before the property is let, and the tenant should receive it.

For new build properties, an EPC is required on completion. This is usually arranged as part of the wider compliance process, alongside other handover documents.

Commercial property follows the same broad rule. If a shop, office, warehouse or other non-domestic unit is being sold or let, an EPC is often needed before marketing begins.

Selling a home - when the EPC is needed

If you are selling a home, the EPC is typically required at the point the property is marketed. In practical terms, that means before or as soon as the listing goes live. Waiting until an offer is accepted is usually too late.

This catches some sellers out, especially if the property has been in the family for years and no one has had to think about compliance documents before. Estate agents are used to asking for the certificate early because buyers increasingly expect the rating to appear in the listing details.

An EPC is valid for 10 years, so you may not need a new one if a current certificate already exists and no major issue affects its use. Even then, it is worth checking the expiry date rather than assuming it is still valid.

Letting a property - what landlords need to know

For landlords, when is an EPC required? In most cases, before a property is let under a new tenancy. This is not just about having a document on file. The EPC rating also links directly to minimum energy efficiency rules for many privately rented properties.

At present, landlords of domestic and commercial properties generally need to meet the relevant MEES threshold unless an exemption applies. So the EPC serves two purposes. It is part of the letting paperwork, and it may show whether the property can legally be let.

This is where timing becomes especially important. If the certificate reveals a rating below the required standard, the issue may need attention before the tenancy proceeds. Leaving the EPC to the last minute can therefore cause avoidable delays, particularly between tenancies when turnaround time matters.

For renewals and ongoing occupation, the position can be more fact-specific. A fresh EPC is not automatically required every time an existing tenancy continues, but if you are re-letting, assigning, or changing the arrangement, it is sensible to check the current rules and the certificate status.

When is an EPC required for commercial property?

Commercial owners and agents often ask the same question because deadlines can affect marketing plans. In most cases, an EPC is required when a commercial property is sold or let. That includes many offices, retail premises, industrial units and mixed-use spaces, though the exact treatment can vary depending on the building and transaction.

The certificate should usually be available to prospective buyers or tenants at an early stage. If you are advertising a unit, the energy rating often needs to be included in the marketing material.

Commercial landlords also need to keep one eye on MEES compliance. A poor rating may do more than weaken market appeal - it may restrict the ability to grant a lease unless a valid exemption is registered.

New builds, conversions and major changes

A new building will usually need an EPC when construction is completed. This applies to new homes and new commercial buildings. The certificate reflects the building as built, rather than just the original design intent.

Conversions can also trigger the need for an EPC, especially where the work creates a separate dwelling or changes the way the building is used. For example, converting a large house into flats or turning a commercial building into a residential unit may bring new certification requirements into play.

If you are carrying out substantial work, it is worth checking early which documents will be needed at handover. That avoids a last-minute scramble when completion is approaching and buyers, lenders or tenants are waiting.

Situations where an EPC may not be required

There are exemptions, but they are narrower than many people expect. Not every building needs an EPC, and not every transaction triggers one.

Common examples can include certain listed buildings, places of worship, temporary buildings, some detached buildings with very low floor area, and buildings due to be demolished. Even then, the exemption is not automatic just because the property falls into a broad category. The details matter.

Listed buildings are a good example. Many owners assume they are fully exempt, but that is not always the case. The question is often whether compliance with minimum energy performance requirements would unacceptably alter the character or appearance of the building. Some listed properties still require an EPC, depending on the circumstances.

Holiday accommodation can also be misunderstood. Some short-term lets may be exempt if they are rented for limited periods and not intended for continuous occupation, but many holiday lets do still need an EPC.

Because exemptions depend heavily on the facts, it is sensible to confirm the position before relying on one.

When is an EPC not enough on its own?

An EPC is a key compliance document, but it does not cover everything. Sellers and landlords often need other paperwork alongside it, especially if the property is being marketed or let quickly.

For landlords, gas safety records, electrical requirements and deposit rules may all sit alongside the EPC. For sellers and agents, floor plans and marketing documents are often arranged at the same time to keep the listing process moving. In practice, bundling these tasks can save time and reduce admin.

That is one reason many owners prefer to organise the EPC as part of a wider property instruction rather than as a separate, last-minute job.

Common mistakes that cause delays

The biggest mistake is assuming the EPC can wait until a buyer or tenant asks for it. By that point, you may already be behind. Another common issue is relying on an old certificate without checking whether it is still valid.

Landlords sometimes focus only on having a certificate, not on the rating itself. If the property falls below the required standard, that can create a bigger problem than the missing document. Commercial owners can run into the same issue when a letting is agreed in principle but energy compliance has not been reviewed.

There is also frequent confusion around exemptions. Terms such as listed, temporary or vacant do not automatically remove the requirement. The legal position depends on the specific building and the intended use.

A practical way to approach EPC timing

If you are planning to sell, let or complete works on a property, treat the EPC as an early-stage requirement. Check whether a valid certificate already exists, confirm whether the property is exempt, and arrange a new assessment if needed before marketing starts.

That approach gives you time to deal with any rating issues, keeps agents and tenants informed, and reduces the chance of compliance problems later. For landlords in particular, early checks are far easier than trying to fix an EPC or MEES issue with move-in dates already booked.

If you need a quick answer on when is an EPC required for your property, it is usually best to ask before the transaction gathers pace. A short delay at the start is manageable. A delay when contracts, tenants or completion dates are in motion is much harder to absorb.

Good property compliance is rarely about doing more paperwork than necessary. It is about getting the right documents in place at the right time, so the rest of the process can move forward with less friction.