Nassau County Property Tax Lookup

Property taxes in Nassau County are based on assessed property values determined by local assessors and equalized by the county. Long Island's most populated county with over 1.3 million residents.

Understanding property tax obligations is critical for real estate investors, homebuyers, and property managers. Tax assessments directly impact carrying costs, cash flow projections, and investment returns. Unpaid taxes can result in tax liens and eventual tax sale proceedings.

RegWatch provides property tax data for Nassau County including:

• Assessed value — current land and improvement assessments
• Market value — estimated market value based on assessment methodology
• Tax rate — tax class and effective tax rate
• Annual tax amount — total property tax obligation
• Exemptions — applicable exemptions (veteran, senior, STAR, etc.)
• Payment status — outstanding balances and delinquencies where available

Accurate property tax information prevents surprises at closing and ensures investors can model true carrying costs before acquiring a property.

Look up property taxes for any Nassau County address instantly with RegWatch. Get assessed values, tax rates, and payment status in seconds. sign up free today.