EXHIBIT 23.1 INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in the Registration Statement Nos. 333-80415 and 333-80409 of Factual Data Corp. on Form S-3 and Registration Statement Nos. 333-92693 and 333-80101 on Form S-8 of our report dated January 31, 2003, appearing in the annual report on Form 10-K of Factual Data Corp. for the year ended December 31, 2002. /s/ BDO Seidman, LLP BDO Seidman, LLP March 28, 2003 Los Angeles, California