Missed HeizkostenV deadline (31 Dec 2026): Kaufvertrag protections and notary clauses for meter replacement, tenant rebates and short‑term budgeting

What the law actually requires and the tenant '3%' right

The current Verordnung über Heizkostenabrechnung (HeizkostenV) requires that non‑remote devices installed before 1 December 2021 be retrofitted or replaced so they are remotely readable by 31 December 2026. The rule is in § 5 para. 3: devices that were not remote‑readable and were installed by that date "müssen bis zum 31. Dezember 2026" nachgerüstet oder ersetzt werden; exceptions are possible only where retrofit is technically impossible or would cause an unreasonable hardship. The regulation also requires new installations since 1 December 2021 to be remotely readable and interoperable with Smart‑Meter‑Gateways. ([gesetze-im-internet.de](https://www.gesetze-im-internet.de/heizkostenv/HeizkostenV.pdf))

If a building owner fails the § 5 obligation, tenants have a statutory limited compensation right under § 12(1): when the owner "entgegen § 5 Absatz 2 oder Absatz 3" has not installed remote‑readable equipment, the tenant may reduce the billed share of heating/warm‑water costs by 3 % at settlement. That 3‑% reduction is automatic statutory law, not model contract language — buyers must assume tenants can invoke it for affected billing periods. ([gesetze-im-internet.de](https://www.gesetze-im-internet.de/heizkostenv/HeizkostenV.pdf))

Why this matters to buyers and what to check in due diligence

A building sold after 31 December 2026 with non‑compliant meters carries three practical costs: (1) the direct capex to retrofit or replace devices to meet § 5, (2) possible short‑term cash flow shortfalls from tenants exercising the 3‑% reduction for affected billing periods, and (3) administrative and meter‑service fees for a provider who can deliver interoperable equipment.

Ask the seller (or the WEG administrator) for: invoices and technical descriptions of installed meters; minutes of owner meetings where meter replacement or Sonderumlagen (special levies) were discussed; and the current balance of the Instandhaltungsrücklage. If meters are communal items subject to WEG votes, budget responsibility and timing may be governed by WEG decisions — check the minutes. For recent government evaluation of practical costs and tenant impacts see the Bundeswirtschaftsministerium evaluation report (publication requirement and cost‑examples are discussed there). ([bundeswirtschaftsministerium.de](https://www.bundeswirtschaftsministerium.de/Redaktion/DE/Evaluationen/Gesetze-Verordnungen/evaluierung-der-heizkostenverordnung-zur-ausstattung-zur-verbrauchserfassung.pdf?__blob=publicationFile&v=10&utm_source=openai))

Contract‑level protections to use in the Kaufvertrag

You cannot change statutory rights by private clause (tenants retain the 3‑% right). What you can do in the purchase contract is allocate financial responsibility and provide a clear procedure so the buyer is not left with surprise bills.

Practical, commonly used protections (explained below and illustrated in sample clauses): - Seller representation and warranty: seller represents that all installed meters are listed and that they comply with the HeizkostenV; if that representation is untrue, seller indemnifies buyer for replacement costs and tenant rebates for periods before transfer. (This creates a contractual remedy where the statute gives tenants a direct right.) - Escrow/retention: at closing a fixed sum or a percentage of purchase price is retained in a notary escrow for a fixed period (e.g., 6–12 months) to pay meter replacement invoices and tenant rebates; release by joint statement of buyer and seller or by final invoices. - Price reduction mechanism: explicit price‑adjustment formula (e.g., seller pays actual replacement cost up to a cap certified by an independent installer; excess is split or invoiced to buyer). - Access and cooperation obligation: seller must secure immediate access and sign supplier consents so retrofit can start without delay.

Below are draft clause texts suitable for notary insertion; they are examples and must be adapted by a German lawyer/notary to the facts of the deal.

Sample notary clauses (English explanation followed by German draft)

1) Escrow/Retention (purpose): hold a defined sum to pay replacement invoices and tenant rebates. Use an independent installer’s cost estimate to set the amount.

2) Seller indemnity for meters and tenant rebates: seller pays or indemnifies buyer for (a) costs to bring meters into compliance with § 5 HeizkostenV, and (b) sums actually refunded or reduced by tenants under § 12(1) for billing periods ending before transfer.

3) Cooperation/access: seller must enable access within X days and sign any supplier/landlord‑consent forms required to begin retrofit immediately after closing.

German sample texts (for notary insertion):

(1) Rückbehalt/Treuhandbetrag Der Notar nimmt auf ein nachfolgendes Treuhandkonto einen Betrag in Höhe von EUR [Betrag in Ziffern und Worten] ("Treuhandbetrag") entgegen. Der Treuhandbetrag dient ausschließlich zur Zahlung von Rechnungen für den Austausch oder die Nachrüstung von Ausstattungen zur Verbrauchserfassung gemäß § 5 HeizkostenV sowie zur Befriedigung von durch Mieter vorgenommener Abrechnungs‑Kürzungen nach § 12 Absatz 1 HeizkostenV, soweit diese Kürzungen Abrechnungszeiträume betreffen, die vor dem Zeitpunkt der Eigentumsübertragung liegen. Die Auszahlung erfolgt gegen gemeinsame schriftliche Anweisung von Käufer und Verkäufer oder gegen Vorlage von Schlussrechnungen eines unabhängigen Installateurs.

(2) Verkäufer‑Freistellung Der Verkäufer verpflichtet sich, den Käufer von sämtlichen Aufwendungen, Kosten und Ansprüchen Dritter (einschließlich Ansprüchen von Mietern aus § 12 HeizkostenV) freizustellen, die dadurch entstehen, dass die verkauften Liegenschafts‑Zähler den Anforderungen des § 5 HeizkostenV nicht entsprechen. Die Freistellung umfasst insoweit die Kosten für den Austausch/Die Nachrüstung sowie tatsächlich geltend gemachte Kürzungsbeträge durch Mieter für Abrechnungszeiträume vor der Übertragung.

(3) Mitwirkungspflicht Der Verkäufer verpflichtet sich, dem Käufer, Messdienstleistern und Installationsfirmen unverzüglich nach Aufforderung den Zugang zu den Ableseeinrichtungen zu gewähren und alle notwendigen Zustimmungen zu erteilen, die für eine rechtlich und technisch ordnungsgemäße Nachrüstung erforderlich sind.

Practical closing checklist and risk notes

Before notarisation: (1) obtain a written installer estimate for full retrofit; (2) obtain WEG minutes showing whether meter replacement is a communal measure; (3) agree a treuhand amount or warranty cap; (4) require seller signatures for supplier consents.

After closing: instruct the notary escrow agent on release conditions; obtain final invoices and tenant communications about any implemented 3‑% reductions; if disputes arise, a contractual indemnity claim against the seller and the escrow balance are the usual remedies. Do not rely on templates without local counsel: notaries will draft the final German clause and can hold the escrow according to notarial practice.

This article does not replace legal advice. For drafting and execution of the precise German notary clause, consult a German solicitor (Rechtsanwalt) experienced in real‑estate conveyancing or the notary (Notar) who will prepare the deed.