Your EPC lasts ten years. After that, it’s gone, and depending on what you’re planning to do with your property, that matters a lot more than most homeowners realise.
If you’re just living in your home with no plans to sell or rent it out, an expired EPC has no immediate legal consequence. But the moment you want to put it on the market, let it out, or even update your property records after an improvement, you’ll need a valid one. As of October 2026, the rules are changing in ways that affect most property owners.
What an EPC actually does
An EPC rates your property’s energy efficiency on a scale from A (most efficient) to G (least efficient). It also estimates your annual energy costs and recommends improvements, things like loft insulation, double glazing, or upgrading your boiler.
Every domestic property that’s been sold or rented since 2008 should have one. It’s stored on the national EPC register, and anyone can look it up.
What most people don’t realise is that the EPC doesn’t just sit in a drawer. It feeds into property data used by buyers, lenders, surveyors, and increasingly, the platforms where people research homes before they even book a viewing.
When you legally need a valid EPC
The law is clear on when a valid EPC is required, and the trigger is earlier than many sellers expect.
- Selling your home: You need a valid EPC before you market the property. Not at exchange, not at completion — before the listing goes live. If your EPC expired two years ago and you’re thinking of selling this summer, you’ll need a new one before your estate agent can advertise it.
- Renting out a property: Same rule. A valid EPC must be in place before you market to tenants. For landlords, there’s an additional requirement: the property must meet a minimum energy efficiency standard (currently band E). More on that below.
- New builds: An EPC is required on completion.
- Short-term and holiday lets: As of the latest government guidance, these are now in scope regardless of whether the guest pays the energy bills. If you’re listing on Airbnb or similar platforms, you’ll need one.
- Listed buildings: Historically exempt, but that blanket exemption is being removed. Listed and heritage properties will need a valid EPC when marketed, sold, or let.
What’s changing from October 2026
The government confirmed in January 2026 that the EPC system is getting a significant overhaul. Here’s what’s coming.
New-style EPCs from October 2026. The familiar A-G rating isn’t going away, but it’s being supplemented by four new metrics: Fabric Performance, Heating System, Energy Cost, and Smart Readiness. The idea is to give a more detailed picture of how the property actually performs, not just a single letter grade.
During the transition period, both the old rating and the new metrics will appear on certificates. From October 2029, the new format becomes compulsory for all EPCs.
Stricter evidence rules are already in force. Since June 2025, assessors require documentary evidence, receipts, installation certificates, building regulations sign-off, before improvements can be reflected on your EPC. If you’ve had a new boiler fitted or added insulation but can’t prove it, your EPC won’t reflect the work. This is a significant change from the old system, where assessors could note visible improvements at their discretion.
The landlord deadline: Band C by 2030
If you rent out a property, pay attention. The government has set out plans to raise the minimum EPC rating for all private rented properties from band E to band C by 1 October 2030. This applies to all tenancies, new and existing.
The key details:
- Spending from October 2025 counts toward compliance, so landlords making improvements now are already building toward the requirement.
- Cost cap of £10,000 per property (or 10% of property value for homes under £100k) — if you hit the cap without reaching band C, you can register an exemption.
- Fines of up to £30,000 per property for non-compliance, up from the current £5,000 maximum
- Exemptions remain for properties where third-party consent is refused, where improvements would devalue the property by more than 5%, or where the cost cap is reached.
This isn’t law yet; it’s stated government policy awaiting legislation. But the direction is clear, and landlords who wait until 2029 to act will face a crowded market for assessors and contractors.
What It Costs and How Long It Takes
A new EPC for a standard domestic property typically costs between £60 and £120. The price varies by property size, location, and assessor.
The assessment itself takes around 45 minutes to an hour. A qualified Domestic Energy Assessor visits the property, inspects the insulation, heating, windows, lighting, and building fabric, and uploads the certificate to the national register, usually within 24 to 48 hours.
One thing worth noting: not all assessors are the same. A standard EPC is carried out by a Domestic Energy Assessor (DEA). Some surveying firms use qualified chartered surveyors to carry out EPC assessments, which can mean a more thorough inspection, though usually at a higher price point. If you’re getting a survey done at the same time, it’s worth asking whether your surveyor can handle the EPC in the same visit.
Why It Matters Even If You’re Not Selling
Here’s where it gets interesting for homeowners who aren’t planning to sell or let anytime soon.
Your EPC is one of the key data sources that feed your property’s public profile. When buyers research a property, checking its estimated value, build date, size, and energy rating, the EPC is where much of that information comes from. An expired or outdated EPC means the data attached to your property may no longer reflect its current condition.
If you’ve invested in improvements, such as a new boiler, insulation, solar panels, or double glazing, none of that will show up in your property’s public data until you get a new assessment. And under the new evidence rules, you’ll want to have your receipts and certificates ready when you do.
For homeowners thinking about selling in the next few years, getting a fresh EPC now rather than waiting until listing day has a practical advantage: it gives you time to act on the recommendations. If your rating comes back as a D when it could be a C with a relatively modest investment, that’s worth knowing before you’re under pressure to complete.
What to Do Next
If your EPC is more than eight years old, it’s worth checking the expiry date. You can look it up for free on the national EPC register.
If it’s expired or close to expiring, and you’re considering selling, letting, or simply want your property data to be accurate, getting a new assessment is straightforward and relatively inexpensive.
And if you’ve made improvements to your property, gather the paperwork, installation certificates, building regulations sign-off, and receipts before the assessor visits. Under the current rules, undocumented improvements won’t be counted.
Property Looker helps homeowners understand their property through data, including energy performance, valuations, and risk signals. Look up your property to see what the records show.