The UK is gearing up to implement a new council tax surcharge, colloquially known as the “mansion tax,” targeting high-value properties. Set to take effect in April 2028, this measure will apply to homes valued over £2 million. To accurately assess these properties, tax authorities plan to conduct inspections focusing on internal features and precise measurements.
Under this proposed surcharge, homeowners with properties valued between £2 million and £2.5 million will be required to pay an annual fee of £2,500. This amount increases incrementally, with properties valued up to £3.5 million incurring a £3,500 charge, those between £3.5 million and £5 million facing a £5,000 fee, and homes valued over £5 million seeing a surcharge of £7,500. Notably, this surcharge is separate from the existing council tax and will be adjusted annually to align with inflation rates.
The valuation process will involve inspectors assessing various property characteristics, such as size, architectural design, the number of bedrooms and bathrooms, and the number of storeys. To ensure compliance, property owners who obstruct these valuation efforts may face fines of £200, while those failing to provide required information without reasonable justification could incur penalties up to £500.
The government has emphasized that all inspections will be conducted with the prior agreement of property owners and will adhere to official guidelines, ensuring a systematic approach to the valuation process. This initiative marks a significant step in the government’s efforts to address taxation on luxury properties, aiming to balance revenue generation with fairness in the housing market.