Energy certificate for a property in Spain
In 30 seconds
Every Spanish property must have a valid energy certificate before it can be advertised for sale or rent. The certificate rates the building from A to G. It is valid for ten years (five years for a G rating) and costs 50 to 300 €. It is the seller’s document to provide, not yours.
What is the certificate measuring?
This is a theoretical rating of the building itself. It is not based on your household’s habits or last year’s utility bill. A qualified technician calculates or measures the property’s estimated energy use and CO2 emissions, based on its construction, insulation, windows and installed systems, and converts this into a single letter, from A (the most efficient) to G (the least efficient). Two similar-looking apartments in the same building can get different letters, if one has been renovated with better insulation or more efficient windows and the other has not.The letter does not say how much you personally will spend on electricity. That depends on how the property is really used. The letter only shows how efficient the building is designed and built to be. On this coast, a poor letter matters less for heating and cooling costs than it would in a colder climate. But it still has a real effect: by law, it must be stated in every advertisement for the property, on every platform.
Energy Performance CertificateA to G rating label
- Energy rating
- [A-G]
- Energy consumption
- [XXX] kWh/m² year
- CO2 emissions
- [XX] kg CO2/m² year
- Validity
- [DD/MM/AAAA]
- Energy rating. The single letter that must appear on every advertisement, by law.
- Energy consumption. Theoretical. Based on the building itself, not your household’s real bills.
- CO2 emissions. Calculated the same way as the energy figure.
- Validity. Valid 10 years from issue, or 5 years for a G rating.
When exactly is it legally required, and when is it not?
The certificate is required before a sale or a rental of any length can be advertised at all. The rule became stricter in 2021. A short-term or holiday rental used to be exempt if the property was rented out for under four months a year. That exemption no longer applies. A holiday rental advertised on any platform now needs the same valid certificate as a long-term rental or a sale.A small number of real exemptions remain, and they are narrow. They are not a general way to avoid the rule.
Are you selling or renting out the property, in any form?
- SellingRequired, always, before the property can even be advertised.
- Long-term rentalRequired, always. Same requirement as a sale.
- Short-term or holiday rental, any lengthRequired since 2021. The old under-four-months exemption no longer applies.
- Neither: an independent building under 50 m², or bought for demolitionNot required, within those narrow exemptions only.
Position as of 17 August 2026, read from Real Decreto 390/2021, articles 2 and 3.2, checked directly against the BOE text. Several independent secondary sources confirm the removal of the under-four-months exemption, describing the same change consistently. We did not read this article-by-article in the BOE text itself.
Does a brand new, never-lived-in property still need one before it can be sold?Yes. A new build gets its certificate as part of the development process. The developer’s own technical team arranges it. You should receive it along with the other completion documents, not obtain it separately as the buyer.
Who issues it, and how does a seller get one?
Only a técnico competente (a qualified technician), such as an architect, technical architect, or a suitably qualified engineer, can issue the certificate. The owner cannot arrange or register it directly. Every step below goes through the technician.Arevont’s legal coordination collects the seller’s certificate as one of the standard documents gathered before signing, along with the nota simple and the community debt certificate. This way, we check that it is valid and registered before you rely on it, instead of finding out it is missing at the notary.
- A site visitThe technician inspects the property in person, no more than three months before the certificate is issued.
- Where
- The property itself
- The calculationConstruction, insulation, windows and installed systems are converted into the A to G rating.
- Electronic filing with the regional registryIn Andalusia, the Registro de Certificados Energéticos de Andalucía.
- Where
- Agencia Andaluza de la Energía
- Watch out
- Only the certifying technician can file it, never the owner directly.
What happens if a seller does not have a valid certificate?
The sale is not automatically blocked. A notary can still approve the deed if the buyer is clearly told about the missing or expired certificate, and the buyer waives the requirement in writing, inside the deed itself. What does not go away is the seller’s own risk with the authorities: failing to have or provide a valid certificate is an offence that can be fined, under the wider urban-development and consumer-protection rules the regulation refers to. Fines are commonly described in the range of 300 to 6.000 euros, across several independent sources. We have not confirmed the exact fine amounts against the underlying law itself, so have a lawyer confirm this rather than treating it as a promise.At this late stage, a missing certificate is more useful as a warning sign than as a legal tool. It is worth asking why it is missing, and whether one has ever existed for the property. If the seller is reluctant to provide it, treat this the same way you would treat any other missing document that a normal transaction should have ready.
- Ask before signingThe seller has no certificate to show at allThe property may never have had one, or it has expiredWhat to do insteadAsk why, and treat it as a missing document like any other
- Low risk to youYou are asked to waive the requirement to sign fasterA notary can still authorise the deed once the buyer waives it in writingWhat to do insteadKnow that your waiver does not remove the seller’s own risk of a fine
- Ask before signingA short-term rental listing shows no ratingSince 2021, every holiday-rental listing needs one. The under-four-months exemption no longer applies.What to do insteadAsk for it before booking or advertising the same unit
The exact fine amounts are given as a range, reported consistently across several independent sources, rather than as a figure read directly in the underlying law. Have a lawyer confirm them rather than treating them as exact.
If I waive the requirement to get the sale signed faster, does that waiver protect the seller from the fine too?No. A buyer’s waiver, recorded in the deed, only affects whether the notary will go ahead with signing. It has no effect on the seller’s own liability to the regulator for not having a valid certificate in the first place. That is a separate matter between the seller and the state.
Does a poor rating really matter for a coastal holiday home?
This is general information about a legal requirement, current as of 17 August 2026. We read it against Real Decreto 390/2021’s own BOE text for the requirements, validity periods and exemptions it states directly. For the fine range and the 2021 exemption change, we used several independent secondary sources, both flagged above rather than presented as certain. This is not a legal opinion on any specific property.In practice, a poor letter matters less here than it would in a colder climate. Heating and cooling are a smaller share of what it really costs to run a home on a mild Mediterranean coast, and there is no point pretending otherwise. But whatever the climate, the certificate still has a legal role. It must appear in every advertisement, it must exist before signing, and its absence is one more thing worth asking about, along with the rest of the documents covered in full in the site’s fuller lawyer’s-checklist guide.Arevont does not issue certificates and is not a certifying technician. Legal coordination collects and checks the seller’s certificate as one document among several, free of charge, before you sign anything.
Frequently asked questions about the energy certificate
- How long does it really take to get a new certificate issued if a seller does not have one?
- Usually a matter of days, not weeks, once a technician is booked. There is a single site visit, followed by the calculation and the electronic filing. The more common delay is finding and booking a technician, not the certification process itself.
- Does a good energy rating really increase what a property sells for?
- There is no reliable, published figure that isolates this effect on the Costa del Sol specifically, and inventing one would be worse than admitting it. What we can say is that the rating is now visible on every advertisement by law. This makes it one more fact that a comparison-minded buyer sees before ever contacting an agent.
- Can I get an energy certificate for a property I am only thinking about buying, before I own it?
- No. The certificate belongs to the property. It is arranged by whoever currently owns it or is selling it, not by a possible buyer. If a listing does not show one, that is worth raising with the seller’s side. You cannot get one yourself in the meantime.
- Is the rating letter the same across all of Spain, or does Andalusia use a different scale?
- The A to G scale, and the method behind it, are set nationally by Real Decreto 390/2021. They apply the same way in Andalusia as anywhere else in Spain. The only regional difference is the registry the certificate is filed with. In Andalusia, this is the Agencia Andaluza de la Energía’s own system.
- Will a poor rating become a real problem later, even if it is not one today?
- Possibly, over a longer time. Several industry sources consistently report an EU-driven trend, though this is not confirmed in a Spanish law yet. This trend points toward requiring a minimum rating of E for a property to enter the market by 2030, rising to D by 2033. Treat this as a trend to watch, not a confirmed Spanish rule. It does not make a G-rated property unsellable on a specific date. A separate change, already reported as in force since August 2025, requires a valid certificate for an official mortgage valuation (tasación). This is a more immediate reason a poor or missing rating can matter sooner than 2030. We also flag this as read from industry reporting, not from the law itself.
