South Shore Assemblyman Ron Castorina is coming under fire for a receiving a tax break he's not entitled to.

According to City Department of Finance records, Castorina received a $303 credit for a home he owns on Signs Road.

Rules state the credit is only applicable if the home is your primary residence.

Since Castorina currently calls a home in Richmond Valley his primary residence, he is ineligible for the state STAR credit.

"When I purchased the home from my parents in 2014, the Department of Finance was supposed to set the exemptions at zero as they do with all properties when the deed was filed.  They did not do so.  I NEVER applied for a STAR exemption upon  this property," Castorina said.

Castorina is in the midst of a heated campaign as he faces a challenge from Republican Janine Materna.   

Materna issued a statement calling the incident a serious issue.

"As an attorney, to simply claim ignorance or blame the city isn't good enough when the STAR TAX exemption has been in effect for over 18 months for a house outside the 62nd Assembly district," Materna said.

A primary for the Assembly seat is set for September 13th.