For an HMO in England, do not decide council-tax liability simply by asking whether the tenants signed one agreement or several. The statutory classification of the property matters.
What the 2023 changes addressed
The Government’s explanatory memorandum for the 2023 regulations describes a single council-tax assessment for HMOs covered by the changes, with liability resting with the owner. The definition broadly follows section 254 of the Housing Act 2004, with differences in the exemptions. Converted blocks of self-contained flats covered by section 257 are excluded from this change.
That means a joint tenancy is not, by itself, a reliable reason to assume that occupiers must pay the council. This article concerns England; do not apply it automatically elsewhere in the UK.
Separate the questions
Check which dwelling or dwellings appear on the valuation list, who the council has identified as liable, and which period the bill covers. Those are different questions. Keep the floor plan, occupation history and agreements together so that any enquiry explains the actual arrangement.
Resolve uncertainty before budgeting
Ask the billing council for its reasoning if the named liable person appears wrong. Raise a valuation or banding question with the Valuation Office Agency. Obtain advice on the correct review route and deadlines for the particular decision rather than ignoring a bill.
For your own records, keep a dated note of each response and the documents supplied. Do not promise tenants a refund, cancel an existing payment arrangement or rewrite a rent calculation on the strength of a general article alone.
Editorial review: 14 October 2026. This original Property Perpetuity guide replaces the imported text; the original archive publication date is retained.