CERTIFICATIONS

    I, Robert S. Kapito, certify that:

        1.  I have reviewed this report on Form N-CSR of BlackRock New York
            Investment Quality Municipal Trust Inc.;

        2.  Based on my knowledge, this report does not contain any untrue
            statement of a material fact or omit to state a material fact
            necessary to make the statements made, in light of the circumstances
            under which such statements were made, not misleading with respect
            to the period covered by this report;

        3.  Based on my knowledge, the financial statements, and other financial
            information included in this report, fairly present in all material
            respects the financial condition, results of operations, changes in
            net assets, and cash flows (if the financial statements are required
            to include a statement of cash flows) of the registrant as of, and
            for, the periods presented in this report;

        4.  The registrant's other certifying officers and I are responsible for
            establishing and maintaining disclosure controls and procedures (as
            defined in rule 30a-2(c) under the Investment Company Act of 1940)
            for the registrant and have;

            a   designed such disclosure controls and procedures to ensure that
                material information relating to the registrant, including its
                consolidated subsidiaries, is made known to us by others within
                those entities, particularly during the period in which this
                report is being prepared;

            b   evaluated the effectiveness of the registrant's disclosure
                controls and procedures as of a date within 90 days prior to the
                filing date of this report (the "Evaluation Date"); and

            c   presented in this report our conclusions about the effectiveness
                of the disclosure controls and procedures based on our
                evaluation as of the Evaluation Date;

        5.  The registrant's other certifying officers and I have disclosed,
            based on our most recent evaluation, to the registrant's auditors
            and the audit committee of the registrant's board of directors (or
            persons performing the equivalent functions):

            a   all significant deficiencies in the design or operation of
                internal controls which could adversely affect the registrant's
                ability to record, process, summarize, and report financial data
                and have identified for the registrant's auditors any material
                weaknesses in internal controls; and

            b   any fraud, whether or not material, that involves management or
                other employees who have a significant role in the registrant's
                internal controls; and

        6.  The registrant's other certifying officers and I have indicated in
            this report whether or not there were significant changes in
            internal controls or in other factors that could significantly
            affect internal controls subsequent to the date of our most recent
            evaluation, including any corrective actions with regard to
            significant deficiencies and material weaknesses.


    Date:     06/30/03
           --------------
                                                     /s/ Robert S. Kapito
                                                     ---------------------------
                                                     Robert S. Kapito
                                                     Trustee, President,
                                                     Principal Executive Officer




CERTIFICATIONS

    I, Henry Gabbay, certify that:

        1.  I have reviewed this report on Form N-CSR of BlackRock New York
            Investment Quality Municipal Trust Inc.;

        2.  Based on my knowledge, this report does not contain any untrue
            statement of a material fact or omit to state a material fact
            necessary to make the statements made, in light of the circumstances
            under which such statements were made, not misleading with respect
            to the period covered by this report;

        3.  Based on my knowledge, the financial statements, and other financial
            information included in this report, fairly present in all material
            respects the financial condition, results of operations, changes in
            net assets, and cash flows (if the financial statements are required
            to include a statement of cash flows) of the registrant as of, and
            for, the periods presented in this report;

        4.  The registrant's other certifying officers and I are responsible for
            establishing and maintaining disclosure controls and procedures (as
            defined in rule 30a-2(c) under the Investment Company Act of 1940)
            for the registrant and have;

            a   designed such disclosure controls and procedures to ensure that
                material information relating to the registrant, including its
                consolidated subsidiaries, is made known to us by others within
                those entities, particularly during the period in which this
                report is being prepared;

            b   evaluated the effectiveness of the registrant's disclosure
                controls and procedures as of a date within 90 days prior to the
                filing date of this report (the "Evaluation Date"); and

            c   presented in this report our conclusions about the effectiveness
                of the disclosure controls and procedures based on our
                evaluation as of the Evaluation Date;

        5.  The registrant's other certifying officers and I have disclosed,
            based on our most recent evaluation, to the registrant's auditors
            and the audit committee of the registrant's board of directors (or
            persons performing the equivalent functions):

            a   all significant deficiencies in the design or operation of
                internal controls which could adversely affect the registrant's
                ability to record, process, summarize, and report financial data
                and have identified for the registrant's auditors any material
                weaknesses in internal controls; and

            b   any fraud, whether or not material, that involves management or
                other employees who have a significant role in the registrant's
                internal controls; and

        6.  The registrant's other certifying officers and I have indicated in
            this report whether or not there were significant changes in
            internal controls or in other factors that could significantly
            affect internal controls subsequent to the date of our most recent
            evaluation, including any corrective actions with regard to
            significant deficiencies and material weaknesses.


     Date:    06/30/03
           --------------
                                       /s/ Henry Gabbay
                                       -----------------------------------------
                                       Henry Gabbay
                                       Treasurer and Principal Financial Officer