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Missed the HeizkostenV remote‑meter deadline (31 Dec 2026): tenant‑rebate math, service‑charge budgets and three Kaufvertrag clauses

What the Heizkostenverordnung actually requires by 31 Dec 2026, the exact statute math landlords must use to allocate heating and hot‑water costs, what items may shift in the Hausgeld budget and three concrete Kaufvertrag clause templates (with placeholders) to allocate retrofit risk.

Two adjacent apartment building façades, Gründerzeit and modern block, two‑colour architectural illustration

Quick facts and the deadline

The Heizkostenverordnung (HeizkostenV) requires that non‑remote (nicht fernablesbare) recording devices installed up to 1 December 2021 must be retrofitted or replaced so they meet the remote‑readable requirements by 31 December 2026; the text also provides limited exceptions for cases where retrofit is technically impossible or would cause an unreasonable hardship. ([gesetze-im-internet.de](https://www.gesetze-im-internet.de/heizkostenv/BJNR002610981.html))

What the law makes you do and what you may charge back

HeizkostenV sets how operating costs for heating and warm water are split among users. For central systems at least 50 % and at most 70 % of the central‑plant operating costs must be allocated according to measured consumption (erfasster Verbrauch); the remainder is allocated by floor area or cubic volume. The regulation lists which cost items count as central‑plant operating costs (fuel, delivery, operating electricity, cleaning, measurement equipment rental or use and the costs of reading and billing). Use these statutory percentages exactly when you prepare a Betriebskosten‑/Heizkostenabrechnung. ([gesetze-im-internet.de](https://www.gesetze-im-internet.de/heizkostenv/BJNR002610981.html))

Exact tenant‑rebate math (how the numbers work)

Two statutory rules give you the exact arithmetic to produce or to check an annual heating bill:

1) Allocation of central‑plant costs (§7): take the total bill for the central plant (fuel, delivery, operating costs, meter rental/use and reading/ billing). Multiply that total by the consumption‑share percentage you choose (not less than 50 %, not more than 70 %). That product is the pot distributed pro‑rata to occupants based on their measured consumption. The leftover (total minus that product) is distributed by area or volume.

Example (method, not legal advice): if central‑plant operating costs = €10 000 and you allocate 60 % consumption‑based, then €6 000 is shared by recorded consumption and €4 000 by floor area. Always show these steps on the Abrechnung. ([gesetze-im-internet.de](https://www.gesetze-im-internet.de/heizkostenv/BJNR002610981.html))

2) Warm‑water share where meters are missing (§9): the regulation gives a backup formula for warm water heat Q = 2,5 × V × (tw − 10) (kilowatt‑hours per year) when direct measurement is not possible—the statute prescribes this exact numeric formula and its parameters. Use it where applicable. ([gesetze-im-internet.de](https://www.gesetze-im-internet.de/heizkostenv/BJNR002610981.html))

Note on costs for remote devices: the costs of procurement, connection, rental and reading may be counted among the plant’s operating costs and thus can be allocated to tenants as described above, provided the Abrechnung meets the transparency rules. Utilities must disclose to customers any pass‑through of costs related to remote metering. ([gesetze-im-internet.de](https://www.gesetze-im-internet.de/heizkostenv/BJNR002610981.html))

How landlords' service‑charge (Hausgeld) budgets change

Expect two line‑items to shift: (a) capital or investment for retrofitting meters (one‑off or staged capex), and (b) higher ongoing operating costs (device rental, data handling, gateway costs, vendor service). The statute explicitly includes rental and use costs of measuring equipment and the costs of calculation, splitting and billing among the plant’s operating costs, so these items can appear in the Hausgeld and be passed on following the §7 percentages. ([gesetze-im-internet.de](https://www.gesetze-im-internet.de/heizkostenv/BJNR002610981.html))

The government evaluation found that buildings without remote‑readable setups showed materially higher operating cost increases versus buildings that had been upgraded; in the evaluation the average increase for non‑remote sites was reported as about 6,3 %. This is an empirical finding in the evaluation you should factor into budgeting if you expect to delay retrofit. ([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))

Three Kaufvertrag clauses to allocate retrofit risk (templates)

Below are practical clause templates. Replace bracketed placeholders and have a German notary or Anwalt review wording before use.

1) Seller warranty and price reduction trigger "Der Verkäufer sichert zu, dass die Liegenschaft die Anforderungen der HeizkostenV (§5) hinsichtlich der Fernablesbarkeit bis zum Stichtag 31.12.2026 erfüllt. Sollte binnen [X] Tagen nach Übergabe ein schriftlicher Nachweis über die fehlende Umsetzung vorgelegt werden, reduziert sich der Kaufpreis um einen Betrag in Höhe von [€betrag] zur Abgeltung der voraussichtlichen Nachrüstungskosten; der Betrag ist innerhalb von [Y] Tagen fällig." (Use only after legal review.)

2) Escrow / retention for retrofit completion "Der Käufer und Verkäufer vereinbaren, daß ein rückbehaltenes Guthaben in Höhe von [€betrag] bzw. [X %] des Kaufpreises bis zur Vorlage eines Abnahmeberichts (Bestätigung durch zertifizierten Installateur oder Verwalter) über die fristgerechte Umsetzung der fernablesbaren Messeinrichtungen einbehalten wird. Der Notar ist bevollmächtigt, den Betrag nach Vorlage der Unterlagen freizugeben."

3) Seller‑indemnity and invoice assignment "Der Verkäufer verpflichtet sich, dem Käufer sämtliche Ansprüche gegen Dritte zur Durchsetzung von Gewährleistungs‑ oder Förderungsansprüchen, die aus der Pflicht zur Nachrüstung nach HeizkostenV entstehen, abzutreten; ferner erstattet der Verkäufer dem Käufer nach Nachweis die tatsächlich angefallenen Mehrkosten, soweit diese nicht aus öffentlichen Fördermitteln gedeckt sind."

These clauses are drafting templates only; amounts and percentiles must be set to reflect actual quotes or a professional retrofit estimate before signing. For cross‑border buyers, require the notary to add an explicit condition precedent (Auflage) tying payment release to a certificate of retrofit or an exception decision under §5(3) HeizkostenV. ([gesetze-im-internet.de](https://www.gesetze-im-internet.de/heizkostenv/BJNR002610981.html))

Nothing on this page is investment, tax or legal advice. Price bands are indicative asking prices and disagree between sources by design. Verify every figure with a qualified German notary, tax adviser (Steuerberater) or lawyer before committing capital.

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