Energieausweis: New Rules from May 2026, What Private Landlords Need to Know

On 29 May 2026, the deadline for Germany to transpose the revised EU Energy Performance of Buildings Directive (EPBD, Directive 2024/1275) expires. New Energieausweise issued from that date will look different, contain more information, and trigger obligations that did not exist before. The planned German implementation, the Gebäudemodernisierungsgesetz (GMG), is targeted for 1 July 2026 and will replace the current GEG.

For private landlords, this is not a bureaucratic formality. Missing or invalid certificates carry fines of up to €10,000, the rules now apply to rental contract extensions (not just new tenancies), and the new rating scale will visibly reclassify older buildings. This guide covers exactly what changes, what you need to do, and when.

What the Energieausweis does today

The Energieausweis is the standardised document that describes a building’s energy performance. German law (§§ 79 to 88 GEG) requires landlords to present it at viewings, hand a copy to new tenants at contract signing, and disclose key figures in every property advertisement.

There are two types:

Certificates are valid for 10 years. They cannot be extended. If yours is approaching the end of its validity, you will need a new one regardless of the May 2026 changes.

What changes from 29 May 2026

The EU EPBD recast introduces five substantive changes that directly affect private landlords.

1. A unified A to G rating scale

The current scale (A+ down to H) is being replaced by a harmonised A to G scale used across all EU member states.

• Class A is reserved exclusively for zero-emission buildings (Nullemissionsgebäude).
• Class G is defined as the worst-performing 15% of the national building stock.

The old top class A+ disappears. Buildings currently rated G or H on the old scale will land near the bottom of the new scale, typically in Class G. This matters because the EU’s Minimum Energy Performance Standards (MEPS) target the worst-performing buildings for mandatory renovation by 2030 and 2033 (see below).

2. CO2 emissions must now appear on the certificate

Until now, the Energieausweis reported energy demand and consumption in kWh per square metre per year. From May 2026, it must also display greenhouse gas emissions in kg CO2 per m² per year. This makes the climate impact of a building directly visible and comparable across properties.

3. Concrete renovation recommendations are mandatory

New certificates must include specific, actionable recommendations for efficiency improvements, such as:

• Heating system replacement
• Facade or roof insulation
• Window or door upgrades
• Ventilation improvements

Vague suggestions like “consider modernisation” no longer satisfy the requirement. The certificate must name the measure, the expected efficiency gain, and indicative costs.

4. Expanded issuance triggers

Previously, an Energieausweis was required for sale, new rental, leasing, or major renovation. From May 2026, two new triggers apply:

• Extension or renewal of an existing rental contract. If you and your tenant sign a new fixed-term contract or agree to a contract extension, a valid Energieausweis must be presented.
• Major renovations where more than 25% of the building envelope is affected, or where renovation costs exceed 25% of the building’s value.

The first change is the most consequential for existing tenancies: a renewal is no longer a quiet administrative step.

5. Stricter quality standards for issuance

From May 2026, Energieausweise may only be issued by certified Energieeffizienz-Experten listed in the official dena register. A mandatory on-site inspection (Vor-Ort-Begehung) is required for data collection. Purely remote or photo-based certificates, which have been common and cheap, will no longer meet the standard.

Expect Bedarfsausweis costs to stay at or slightly above the current €300 to €500 range because of the on-site inspection requirement.

What stays the same

• Existing certificates remain valid for their full 10 years, unless the building undergoes material changes (major renovation, heating replacement, facade insulation). You do not need to replace a valid pre-May 2026 certificate.
• The old A+ to H scale will coexist with the new A to G scale for up to 10 years, depending on issue date.
• Fines for non-compliance remain at up to €10,000 under § 108 Abs. 1 Nr. 13 GEG.
• The legal requirement to show the certificate at viewing and hand it over at contract signing is unchanged.

Penalties you need to avoid

Under current law (carried forward in the GMG), fines of up to €10,000 apply to landlords who:

• Fail to present the Energieausweis at the viewing
• Present it incorrectly, incompletely, or too late
• Fail to hand over a copy after contract signing
• Rent or sell without a valid certificate
• Omit mandatory disclosures from the property advertisement
• Make false statements in the certificate or advertisement

Fines apply even when the omission is merely negligent, not intentional. Competitors and tenant associations can also file Abmahnungen (formal warnings) for missing ad disclosures under unfair competition law, which adds legal costs on top of the administrative fine.

Mandatory disclosures in rental ads

Every commercial advertisement (ImmoScout24, Immowelt, newspapers, your own website) must include:

1. Type of certificate (Bedarfs or Verbrauchsausweis)
2. End-energy demand or consumption in kWh per m² per year
3. Main energy carriers for heating (gas, oil, district heat, wood pellets, electricity, etc.)
4. Year of construction (for residential buildings)
5. Energy efficiency class (new A to G scale for certificates issued from May 2026)

Omitting any of these is not only a GEG violation but also constitutes unfair competition. In practice, most rental portals enforce these fields technically, but if you publish elsewhere (flyer, social media, word-of-mouth website), you carry full compliance responsibility.

The renovation pressure: what MEPS means

The EPBD recast introduces EU-wide Minimum Energy Performance Standards (MEPS) targeting the worst-performing buildings for mandatory upgrades:

The exact German implementation is still being drafted as part of the GMG, but the direction is set. If your building is currently in Class G or H on the old scale, it will almost certainly be in Class G on the new scale and therefore in the first tranche of mandatory renovations.

For landlords, this means:

• Plan renovations early. Waiting until 2029 to discover your Class G apartment needs insulation will be expensive and rushed.
• Factor renovation costs into acquisition decisions. An old building with a G rating now carries a quantifiable regulatory risk.
• Consider the KfW subsidies. Energy-efficient retrofits qualify for KfW 261/262 grants of up to 45% of the loan amount (see our financing guide).

Practical decision guide for landlords

You have a valid Energieausweis expiring after May 2027

Do nothing. Your existing certificate remains valid for its full term. Budget for a new-format certificate when the current one expires.

You have a valid Energieausweis expiring before May 2027

You have a choice:

• Renew early under the current rules. Cheaper (especially for the Verbrauchsausweis at €50 to €150) but the certificate will not contain CO2 data or the new A to G class, which may look outdated to prospective tenants.
• Wait for the new format after May 2026. More expensive but future-proof.

If your certificate expires in the first half of 2026, waiting the extra few months for the new-format certificate is usually the better call.

You are renewing or extending a tenant’s contract after May 2026

The renewal now triggers the Energieausweis obligation. Have a valid certificate ready before signing. If your current one expires before the renewal date, order a new one in advance.

You own a building likely to land in Class G

Commission a qualified Energieeffizienz-Experten to assess renovation options. The cheapest way to exit Class G often involves a heating system replacement combined with partial facade insulation, which may also unlock KfW funding. Waiting until the MEPS deadline (2030) forces your hand means higher prices and fewer contractor options.

You are planning a renovation of more than 25% of the envelope

The renovation itself will trigger a new Bedarfsausweis. Coordinate the certificate issuance with the construction timeline to ensure the new certificate reflects the post-renovation state.

How to order a new Energieausweis

1. Find a certified Energieeffizienz-Experten on the official register at energie-effizienz-experten.de (run by dena, BAFA, and KfW). Filter by postcode and certification type.
2. Book the on-site inspection. From May 2026 this is mandatory. Budget one to two weeks lead time.
3. Provide supporting documents: building plans, heating invoices for the past 3 years (for Verbrauchsausweis), insulation documentation, windows and doors specifications.
4. Review the draft certificate before final issuance. Check that the data reflects reality, especially modernisation work that improved efficiency.
5. Store the certificate safely and record the expiration date. The cost is a deductible Werbungskostenposition in your rental property Steuererklärung.

Key takeaways

• The new rules take effect with the EU transposition deadline on 29 May 2026. Germany’s implementing law (GMG) follows on 1 July 2026.
• New certificates use a unified A to G scale, display CO2 emissions, include concrete renovation recommendations, and require a certified expert with on-site inspection.
• New trigger events: contract renewals and major renovations above 25% now require a valid certificate.
• Existing certificates remain valid for their full 10 years, so there is no immediate replacement obligation unless yours is about to expire.
• Fines of up to €10,000 apply to missing, invalid, or incomplete certificates and disclosures.
• The EU MEPS targets the worst 16% of buildings for renovation by 2030 (Class F minimum) and worst 26% by 2033 (Class E minimum). Plan ahead if your property sits near the bottom of the new scale.

Calculate the full cost of ownership of your rental property, including energy-related renovation reserves, with our rental yield calculator, and review the ongoing expense categories in our guide to hidden ownership costs.