Gwynedd Council Tax Premium: Second Home and Empty Home Rates 2026/27

Gwynedd has some of the highest council tax premiums in Wales, and the 2026/27 tax year brought another increase. If you own a second home or long-term empty property in Gwynedd, here is what you are paying and what might reduce it.

Current Rates

From 1 April 2026, Cyngor Gwynedd charges:

• 150% premium on second homes (periodically occupied dwellings)
• 150% premium on long-term empty properties (raised from 100% in April 2026)

The empty home premium applies after a property has been unoccupied and substantially unfurnished for 12 continuous months. The first six months are covered by the standard Class C exemption (no council tax at all), then standard rate applies from months 6–12, and the 150% premium attaches after month 12.

What It Costs in Practice

Gwynedd's Band D baseline for 2026/27 is approximately £2,006. At a 150% premium:

• Band D second home: £2,006 base + £3,009 premium = £5,015 per year
• Band D long-term empty: same calculation once the 12-month threshold is reached

For higher bands the numbers climb steeply. A Band G property with a base of around £3,340 would face a total bill of roughly £8,350.

Gwynedd's Enforcement

Gwynedd is known for strict enforcement of the marketing evidence standards for Class 1 (marketed for sale) and Class 2 (marketed for let) exceptions. The council compares asking prices against recent Land Registry completions for the area and has rejected applications where the asking price was judged to be above the realistic market range.

The council accepts digital submissions through its corporate portal, but evidence requirements are detailed. For a sale exception, expect to provide a signed estate agency instruction, active listing URLs, and a comparative market analysis or RICS valuation.

Statutory Exceptions Still Apply

Despite the high premium rate, all seven national exception classes under the Council Tax (Exceptions to Higher Amounts) (Wales) Regulations 2015 apply in Gwynedd. Classes 1–4 cover both empty homes and second homes. Classes 5–7 cover second homes only. If your property qualifies, the premium is removed entirely — it is not reduced or discounted.

To challenge a refusal, submit a formal written Section 16 grievance to the council. If it rejects the grievance, you may appeal free to the Valuation Tribunal for Wales within two months of the decision notice; if it does not respond within two months, the appeal must reach the tribunal within four months from the date you submitted the grievance.

The Wales Premium Exceptions Guide covers Gwynedd's specific application process, evidence standards, and the full appeal timeline.

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