Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the use in this Amendment No. 5 to Registration Statement No. 333-152973 of our report dated April 10, 2009, relating to the consolidated financial statements and financial statement schedule of Insurance Services Office, Inc. and subsidiaries (which report expresses an unqualified opinion and includes explanatory paragraphs regarding the Company’s adoption of FASB Interpretation No. 48,Accounting for Uncertainty in Income Taxes, an interpretation of FASB Statement No. 109, effective January 1, 2007, and the Company’s adoption of Statement of Financial Accounting Standards No. 158,Employers’ Accounting for Defined Benefit Pension and Other Postretirement Plans — an amendment of FASB Statements No. 87, 88, 106 and 132(R), effective December 31, 2006) appearing in the Prospectus, which is a part of this Registration Statement, and to the reference to us under the heading “Experts” in such Prospectus.
/s/ Deloitte & Touche LLP
Parsippany, New Jersey
August 21, 2009
Parsippany, New Jersey
August 21, 2009