We are proud to announce our customer Climate Central's deep data analysis report on the sinking tax base & implications of rising temperatures across the country.

This analysis delivers an assessment of sea level rise impact on the tax base of hundreds of coastal U.S. counties—specifically, the potential loss of taxable properties caused by shifting tidal boundaries. Findings by the county are detailed in more than 250 reports and a national summary including data on the acreage, buildings, number of properties, and assessed value projected to be at risk this century, by decade. 

To calculate the taxable value of affected parcels and buildings, Climate Central used standardized land parcel data from Regrid. 

For the analysis, if any of the buildings present on a property are determined to be affected, the total value of improvements to that property is considered to be affected. To calculate the land area of affected parcels, Climate Central determines the percentage of each parcel that is exposed. The assessed land value exposed to flood is the fraction of each parcel in the risk zone multiplied by the total assessed tax value of the land.

Summary of Findings

Coastal flooding caused by sea level rise is shifting the tide lines that many coastal states use to delineate boundaries between public and private property. Changes in property boundaries can have significant implications for both property owners and local property tax revenues—a primary source of funding for schools and services provided by local governments.

The analysis takes into account the state-specific boundary definitions, allowing for a clearer assessment of the potential loss of private (taxable) property in the coastal U.S. Climate Central generated this national-level report as well as more than 250 individual county-level reports providing data on the acreage, improvements, and number of parcels potentially affected by rising seas.

Have questions? Want to evaluate our dataset? Get in touch with our team at parcels@regrid.com. 

Learn more about our Nationwide Parcel Data, our schema, pricing, and coverage here.

About Regrid

Regrid is an industry-leading property data and location intelligence company. We serve an array of industries that require land parcels and spatial data at scale, including real estate, insurance, energy, infrastructure, agriculture, logistics, and government.