EXHIBIT 23.1b CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS Black Mountain Community Bank Las Vegas, Nevada We hereby consent to the use in the proxy statement/prospectus constituting a part of Amendment No. 1 to the Registration Statement on Form S-4 of Capitol Bancorp Limited of our report dated January 31, 2003 relating to the financial statements of Black Mountain Community Bank which is contained in the proxy statement/prospectus. We also consent to the reference to us under the caption "Experts" in the proxy statement/prospectus. /s/ BDO SEIDMAN, LLP Los Angeles, California June 25, 2003