What we know about this broker
Confirmed 2026-06-16: CoStar Realty Information, Inc. is a California-registered data broker (OAG registration 195978, approved 2020-12-10). Parent is CoStar Group, Inc. (CSGP). The live DSAR portal is https://privacy.costar.com/DSAR-submission/ — form requires country/state of residency, user relationship to CoStar, products used, request type, first name, last name, email, and CAPTCHA. After submission an email confirmation link must be clicked to complete the request (failure to click = request not processed). The global privacy notice at https://www.costar.com/about/privacy-notice confirms: authorized agents accepted with proof of written signed permission (conditional); CoStar honors GPC signals as opt-out of sale/share. Brands covered by single privacy notice and DSAR portal: CoStar, Apartments.com, Homes.com, LoopNet, Showcase, Land.com, Ten-X, BizBuySell, STR, and additional international properties. Alternative CCPA opt-out (sale only): https://www.costar.com/feedback/datainquiry (403 at time of check — use primary DSAR portal). Alternative privacy contact: [email protected]; phone 800-204-5960. Seed noted verification_method as public_rescan but CoStar is a property data aggregator (B2B + consumer) — broker_confirmed is correct; tier 2. The seed opt_out_url was null — confirmed live URL from OAG registration and DeleteMe guide. legal_basis CCPA-1798.105 (deletion) as primary; opt-out of sale also available.
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