The energy certificate is among the obligations gladly pushed back in the sales process. That is risky: unlike many other formalities, the requirement carries fines, and breaches usually happen when the advertisement is created – long before anyone thinks about the notary appointment.
This article summarises what applies in Germany. It does not replace legal advice; clarify details with a qualified professional if in doubt.
When a certificate is required
In principle every property offered for sale or letting needs a valid energy certificate. It must already exist when the property is advertised – not only at the viewing.
Exceptions exist among others for small buildings below a certain usable area and for listed monuments. Anyone relying on an exception should be able to prove it.
Consumption-based or demand-based?
There are two variants, and the choice is not always free:
The consumption certificate is based on actual consumption data from the last three years. It is cheaper but heavily dependent on user behaviour – a frugal previous owner produces a good figure that is unrealistic for a family with children.
The demand certificate assesses the building fabric: insulation, windows, heating system. It is more involved and more expensive, but independent of the user and more meaningful.
For older residential buildings with few units and without certain modernisation standards, the demand certificate is mandatory. When in doubt it is worth checking before ordering the cheaper option – an inadmissible consumption certificate is ineffective and must be replaced.
What must appear in the advertisement
This is where most mistakes happen. As soon as an energy certificate exists and the property is advertised commercially, certain details must appear in the advertisement. These regularly include:
- Type of certificate (consumption or demand)
- Main energy source of the heating
- Year of construction of the building
- Energy indicator
- Energy efficiency class
These details must appear in every advertisement – on the portal, in the newspaper, on your own website. A reference such as energy certificate available is expressly insufficient.
The most common mistakes
Advertising before the certificate. The property goes online and the certificate is supplied later. That is already the breach.
Incomplete details. The efficiency class is missing, or the energy source is not named. Happens particularly often in short advertisements with character limits.
Expired certificate. Energy certificates have a limited validity period. A certificate from the drawer is regularly worthless.
Wrong certificate type. A consumption certificate where a demand certificate would be mandatory.
Forgotten handover. The certificate must be handed to the buyer at the latest on conclusion of contract – as original or copy. The handover should be documented.
Who is liable
The obligation lies with the seller. Where an agent is involved, the duty to state the details correctly in the advertisement applies to them as well – they cannot fall back on having received the data from the owner.
For agents that means in practice: request the certificate before creating the advertisement, take the details from it, and do not supplement them from memory or from old documents.
What the certificate means for the price
Beyond the formality, the efficiency class has long been a price factor. Buyers factor in renovation costs, banks assess the class when financing, and with very poor values the pool of interested parties shrinks noticeably.
With weak efficiency it is worth naming realistic renovation steps with rough cost estimates in the brochure rather than avoiding the subject. Concealing it loses prospects at the viewing – putting it in context keeps them in the conversation.
An effective tool here is virtual renovation: it shows on the actual property photo how the house would look after refurbishment. That turns an abstract block of costs into a concrete result – and a deterrent into a selling point.
The practical sequence
1. Clarify the certificate type before ordering
2. Obtain the certificate before advertising
3. Transfer the mandatory details completely into every advertisement
4. Present the certificate at the viewing
5. Document the handover on conclusion of contract
Anyone following these five steps has dealt with the subject.
What the certificate costs and how long it takes
The price range is considerable and explained by the certificate type. A consumption certificate can be produced from submitted bills and is correspondingly cheap; a demand certificate requires recording the building data and costs noticeably more. For the demand certificate expect a processing time of one to three weeks, depending on how complete the building documents are. Anyone starting the marketing first and ordering afterwards loses that time. Commission the certificate in parallel with preparing the other documents, not after.
Which documents the assessor needs
For the demand certificate, information on the building envelope and the technical systems is required: year of construction, floor plans with dimensions, details of insulation to roof, facade and basement ceiling, window type and glazing, heating type with year of construction, and the method of hot water generation. Where documents are missing, estimates or on-site recording are needed – both raise the cost and delay matters. For the consumption certificate the heating bills of the last three years including vacancy periods suffice. Important: the bills must be contiguous; gaps mean the certificate cannot be issued.
Renovation recommendations as a selling argument
Every energy certificate contains modernisation recommendations, and most sellers regard them as a tiresome appendix. In fact they can be used productively in the sales conversation. Buyers seeing a poor energy value expect renovation costs anyway – usually more pessimistically than reality warrants. Anyone putting the recommendations openly on the table with rough cost estimates replaces a diffuse worry with a concrete figure. That regularly leads to a smaller price reduction than concealment, because otherwise the buyer builds in a safety buffer higher than the actual expense.
Special cases in existing stock
Several situations regularly raise questions. In mixed-use buildings with residential and commercial parts, separate certificates may be required. For condominiums the certificate relates to the whole building, not the individual unit – the property manager should hold it. For listed buildings the obligation regularly does not apply, which does not mean energy data plays no role in the sale. And in buildings with several heating systems, correct recording is more demanding than the price of many online offers suggests.
Caution with very cheap online certificates
Certificates for a two-figure sum without any queries are a warning sign. A correctly produced demand certificate requires information that cannot be derived from three form fields. If the certificate is faulty, the liability rests not with the provider but with the seller – towards the buyer and towards the authorities. Check that the issuer is authorised and that the data is requested plausibly. A certificate created without knowledge of the insulation situation is worthless in case of doubt and has to be replaced.