Assessing tax parcels with Lens

Miles van Blarcum
Oct 7, 2025
Table of contents

For county tax assessors and property evaluation teams, tracking new construction, additions, and taxable improvements across properties has traditionally required time-consuming field visits and manual inspections. High-resolution imagery in Lens offers a comprehensive approach to streamline this process and provide detailed property change detection without leaving the office.

In this example, we cover how to:

  • Compare baseline and current imagery to identify property changes
  • Order high-resolution imagery on demand for recent updates
  • Measure building additions to estimate taxable square footage
  • Document findings with collaborative notes for field staff

Reach out to our team to learn more and get started in Lens.

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Accessing on-demand imagery for tax assessment

Tax assessment teams can purchase high-resolution imagery directly in Lens on a per-acre basis, with no spatial minimums. With easy access to the imagery of areas in your jurisdiction, you can see detailed views of new construction and property improvements as they happen. With year-round imagery sources, teams can use Lens to evaluate agricultural activities and ongoing construction projects without relying on infrequent captures. Additionally, users can access tax parcel data directly in the platform, which pulls parcel information from across the U.S. through Regrid. This overlay shows the parcel ID, owner, and address, eliminating the need to reference separate county records while conducting assessments. 

While helpful for facilitating current tax year assessments, Lens can also help teams pinpoint exactly when a property change occurred. The slider bar allows assessors to easily compare baseline to current imagery, making it simple to identify and document changes and project progress over time. This visual comparison provides clear evidence of property improvements that may affect tax assessments. In this example, we look at a baseline image from the last ground visit compared against more recent imagery from the current tax year. In this example, we're able to clearly see a substantial addition to the building envelope that wasn't present in the earlier capture.

Measuring property changes for assessment

Using the measurement tool in Lens, you can quickly calculate the exact square footage of new additions. As you can see in this example, we can quickly draw around the perimeter of the new to reveal the approximate size in square feet—critical information for accurate property valuation.

Document findings for field teams

After examining imagery, Lens makes it easy to save your findings as a collaborative note. These notes are visible across your organization, allowing field staff to quickly see which properties have already been evaluated, which additions have been permitted, and which structures may require an on-the-ground visit for verification. This documentation capability helps tax assessment offices strategize field visits, focusing resources on properties that truly need in-person inspection while handling routine assessments remotely.

Contact our team to learn about how Lens can support your property tax assessment needs.

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