Nassau County Executive Edward Mangano has extended the deadline for homeowners to file property tax assessment grievances until March 17 because of Friday’s impending snowstorm.

The last day for homeowners to challenge their 2018-19 tax assessments had been scheduled for Friday. Mangano said Thursday the deadline would be pushed back by a week because of the storm, which could drop up to 7 inches of snow on parts of Long Island.

Democratic Minority Leader Kevan Abrahams (D-Freeport) sent a letter to Mangano on Thursday asking for the extension to prevent homeowners from encountering “dangerous conditions” in order to meet the deadline.

“A resident’s personal safety should not be compromised because they are trying to get a fair assessment from Nassau County,” Abrahams said.

The extension is Mangano’s second in two months.

Mangano last month pushed back the deadline for accepting appeals by 10 days. That move came a day after Newsday reported that the county’s assessment system has created stark differences in the tax bills of those who file grievances and those who do not.

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That report found that the 61 percent of the county’s residential and commercial property owners who appealed their assessments over the previous seven years saw an average increase to their tax bills of about 5 percent, or $466.

The typical tax bill of the 39 percent who did not appeal increased by $2,748, or 35.7 percent.