Last Modified: November 27, 2019
What Are Cookies?
A cookie is a small file that can be stored on your computer or mobile device by CoStar or by third parties when you use the Services.
Types of Cookies
Cookies can be in the form of session cookies or persistent cookies. Session cookies are deleted from your computer or mobile device when you close your browser. Persistent cookies will remain stored on your computer or mobile device until deleted or until they reach their expiration date.
Browser Independent cookies, such as local and/or session storage and interaction requests store certain data on your computer or mobile device with no expiration date. Despite the fact that these requests do not set any cookies, they can still transfer information to first or third parties.
Source of Cookies
- First Party (CoStar): First party cookies are set by CoStar and can only be read by a particular Service. They are commonly required for the Services to function.
- Third Parties: Cookies may be set by third parties, such as analytics and advertising companies. These cookies get re-read during visits to other services if the other services also do business with these companies.
Categories of Cookies
- Essential: Some cookies are strictly necessary for the Services to function. They are usually only set in response to your actions when you request services, such as cookies that enable you to log into secure areas of the Services.
- Performance/Functionality: Cookies, web beacons, and IP address logs allow us to measure and improve the performance of our Services. For example, we may collect information in the aggregate to give us insight into how the Services are being used, such as what website you came from, what pages of the Services you visit, how long you were on the Services, and what type of browser you are using. We also may use these cookies to serve new and different content and to test new features. Web beacons may also be included in CoStar emails to determine when and if such emails are opened or forwarded.
- Personalization: These cookies allow us to recognize you when you visit the Services, personalize your experience, and generally to serve you better. For example, if you enter your name, address or ZIP code into a web form, it may be stored in a cookie so you do not have to enter it again on other forms on the Services.
How to Control Cookies
You may disable or delete browser cookies through your browser settings. Cookies are generally easy to disable or delete, but the method varies between browsers. To learn how you can manage Flash cookies, visit Adobe’s Flash player settings page. If you disable or delete cookies, or if you are running third-party software that intercepts or deletes cookies, please note that some parts of our websites may not work properly.
Our websites currently do not respond to “Do Not Track” requests through mechanisms such as web browser signals. However, you can opt out of third parties collecting your Personal Information for targeted advertising purposes by visiting the National Advertising Initiative’s opt-out page and the Digital Advertising Alliance opt-out page and in the EEA by visiting The Programme’s opt-out page. You may also adjust advertisement and privacy preferences through your social media accounts.