216. Invitation to tender.

Letters asking contractors to tender for work are invitations to treat1; it is generally unnecessary for the building owner or employer to state that he does not bind himself to accept the lowest tender2. Where such a letter states that the lowest tender will be accepted3 or where the parties have negotiated on that basis4, the letter may amount to an offer5. An invitation to tender may be revoked at any time, and a tender may be withdrawn at any time before acceptance on giving notice to the employer