Transaction in Own Shares

CRH PLC
23 January 2008

23rd January 2008





SHARE REPURCHASE PROGRAMME


CRH plc announces that on 22nd January 2008, UBS Limited purchased, on behalf of
the Company, 192,411 Ordinary Shares of €0.32 each in CRH plc at prices between
€22.08 and €23.90 per Ordinary Share.  The purchased shares will be held as
Treasury Shares.

Following the above transaction, CRH plc holds 1,398,430 Ordinary Shares in
Treasury.

The number of Ordinary Shares in issue (excluding Treasury Shares) is
545,828,764.



Contact
Angela Malone
Company Secretary
Tel: [phone]





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