Labour’s garden tax plans would double annual bills The Sunday Express reports on Labour plans for a land value tax which could mean local property taxes doubling for some homeowners. Dubbed the “garden tax” the levy would take into account the value of farmlands, driveways and back gardens and charging 3% of its value. According to the TaxPayers' Alliance estimates residents in Southport would see bills rise from £1,570 to £3,267.