A betterment levy (heitel hashbacha) is 50% of the increase in the value of real estate resulting from a plan, a variance or a nonconforming use. When the local planning and building committee sends an assessment, you have 45 days to act.
When the dispute is over the amount, you request a deciding appraiser (shamai machria). When the dispute is legal, for example whether an exemption applies or whether any increase in value occurred at all, you file an appeal with the appeals committee.
Send the assessment, the plan on which the increase in value was based and the property documents for review. An early review allows you to choose the right course before the deadline passes.
Source: Planning and Building Law, 5725-1965, Third Schedule
First published in Hebrew. Read the Hebrew original