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|  |   |   | **Corporate                Trust Services**9062                Old Annapolis RoadColumbia,                MD 21045-1951410                884-2000410                715-2380 Fax **Wells                Fargo Bank, N.A** |
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**RE:**
**Annual          Statement As To Compliance for CREDIT SUISSE FIRST BOSTON          MORTGAGE**

**                     SECURITIES CORP. Commercial Mortgage Pass-Through Certificates Series          2006-C4**

| (A)   | a                    review of such Certifying Servicer's activities during the preceding                    fiscal year or portion thereof and of such Certifying Servicer's                    performance under this Agreement (or the applicable sub-servicing                    agreement, as the case may be), has been made under such officer's                    supervision and |
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| (B)   | to                    the best of such officer's knowledge, based on such review, such                    Certifying Servicer has fulfilled all its obligations under this                    Agreement, or the applicable sub-servicing agreement or primary                    servicing                    agreement in the case of an Additional Servicer, in all material                    respects                    throughout such year or portion thereof, or, if there has been                    a failure                    to fulfill any such obligation in any material respect, specifying                    each                    such failure known to such officer and the nature and status                    thereof. |
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| Certified                  By: /s/                  Judith J. RishelJudith                  J. RishelVice                  President | Certified                  By: /s/                  Gordon Johnson |
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