Council Tax Renovation Exemption and Major Repairs Exception

The Class M Exception: What It Does and Does Not Cover

If your empty property in England is undergoing major structural repairs or alterations, the Class M exception can shield you from the empty home premium for up to 12 months. During this period, you still pay the standard 100% council tax charge, but the premium surcharge drops away.

Class M was introduced by SI 2024/1007 and applies to every billing authority in England. The crucial word is "major." The works must involve structural repairs — roof replacement, load-bearing wall rebuilds, foundation underpinning, substantial remediation of damp or subsidence — or structural alterations such as converting the layout. Kitchen replacements, bathroom retiling, redecoration, and new carpets are cosmetic refurbishments and do not qualify.

Evidence the Council Will Want

The billing authority assesses Class M applications against the actual scope and nature of the works:

• Structural surveyor's report describing the condition and required repairs
• Building control notices confirming structural works are in progress
• Contractor contracts and an itemised schedule of works
• Site photographs showing the extent of structural disruption
• Planning permission (if the works require it)

Some councils will send an empty property officer to inspect the site. They are looking for genuine structural disruption, not a property that has been cosmetically stripped and left.

The 12-Month Cap Is Strict

Class M runs for a maximum of 12 continuous months. If your renovation project overruns — and construction projects regularly do — the premium applies at month 13, regardless of whether the works are finished. There is no extension mechanism within Class M itself.

This creates a real risk for property developers and owners tackling major projects. A roof replacement delayed by weather, a structural issue discovered mid-works, or a contractor going into administration can easily push the timeline past 12 months.

VOA Deletion: The Route for Truly Derelict Properties

If the property is in such poor condition that it cannot be occupied without substantial reconstruction, there is a separate route that goes beyond the 12-month Class M window. You can apply directly to the Valuation Office Agency (VOA) for deletion from the Council Tax Valuation List.

The legal test comes from R (on the application of Sibley) v Valuation Officer [2012]. The property must be truly derelict — missing roof, removed floor joists, demolished external walls — or so structurally compromised that it is physically incapable of being used as a dwelling. If the VOA agrees, the property loses its council tax band entirely. No band means no bill, and no bill means no premium.

This is not an easy threshold to meet. A property that merely needs extensive refurbishment but still has its structural shell intact will not qualify. Submit photographs, structural engineering reports, and architectural plans directly to the VOA.

When reconstruction is complete, the VOA inspects the property, assigns a band, and council tax liability resumes.

Section 13A Hardship Relief

If your renovation has gone over budget and the premium is pushing you into genuine financial difficulty, you can apply to your billing authority for discretionary relief under Section 13A(1)(c). This is a separate power that allows councils to reduce or write off any council tax liability, including premiums, in cases of exceptional hardship. Each council has its own policy, and approval is not guaranteed.

Our Empty Home Council Tax Premium guide covers both the Class M evidence preparation process and the VOA deletion route, with checklists that help you match your property's condition to the right application pathway.

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