You are entitled to put up any motion you like for consideration and voting at the AGM. So the answer is no – the Secretary cannot refuse to put a motion on the agenda, and whether or not it is reasonable is not relevant. You could put up a motion to paint the building pink if you wanted to – whether or not it would be passed is a separate issue. Refer para 36 of Schedule 2 of the Act set out below.
It is then up to those attending at the meeting to discuss and vote on it. So draft a requisition for motion and send it to the secretary and tell them that you expect it to be included as required under the Act. You could draft it as the approval being subject to obtaining satisfactory quotes and any necessary reports, to be signed off by the EC, i.e. delegating final approval to the EC.
36 Requisition for motion to be included on agenda for general meeting
(1) Any person entitled to vote at a general meeting of an owners corporation on a motion that does not require a unanimous resolution may, by notice in writing served on the secretary of the executive committee, require inclusion in the agenda of the next general meeting of the owners corporation of a motion set out in the notice and the secretary must comply with the notice.
(2) The secretary must give effect to the requirement of the notice.
(3) Subclause (1) does not require the inclusion of a motion on the agenda of a general meeting for which notices have already been given in accordance with this Schedule but in that case the motion must be included in the agenda of the next general meeting after that.