CoStar Group Layoffs & WARN Notices — WARN Index

CoStar Group: 7 WARN layoff notices since 2005, affecting 288 workers in 5 states. Latest filing November 11, 2025.

WARN notices filed by CoStar Group

• CoStar Group: Georgia · 3 workers · November 11, 2025
• CoStar Group, Inc.: San Diego, CA · 4 workers · May 1, 2023
• CoStar Group, Inc.: San Diego, CA · 62 workers · March 8, 2023
• CoStar Group, Inc.: San Diego, CA · 14 workers · November 30, 2022
• CoStar Group: Columbia, MD · 104 workers · June 29, 2018
• Costar Group: Chicago, IL · 44 workers · January 15, 2016
• CoStar Group: Mason, OH · 57 workers · July 22, 2005

Layoffs in: California · Georgia · Illinois · Maryland · Ohio