Steven Irwin's property on Eighth Avenue is assessed at $375,000.
Each of his neighbors' properties are assessed at $220,000.
Irwin says David and Jeannie McGillis should pay taxes based on a $932,000 assessment and the assessment for Lucy Kevoian and Alice and Sylvia Bozoyan should be $789,000.
Irwin says it's unfair to the rest of the taxpayers who have to make up the difference.
At Tuesday's county Tax Board hearing, attorneys mentioned a history of hostilities between the neighbors and Irwin. Irwin is an attorney who specializes in tax appeals.
The board is expected to make a ruling on June 30.
