• CoStar average gross margin for 2023 was 80.46%, a 1.29% decline from 2022.
• CoStar average gross margin for 2022 was 81.51%, a 0.05% decline from 2021.
• CoStar average gross margin for 2021 was 81.55%, a 1.27% decline from 2020.

Gross margin can be defined as a company's total sales revenue minus its cost of goods sold, divided by the total sales revenue, expressed as a percentage.