Although specifically required by the Owner, the tenderer does not include any Subcontractor as the Contractor will be self performing the tasks. Is the tender deemed non-compliant?

It is OK for the Appendix to indicate that the Contractor would do all work components without subcontractors but then the Owner has the ability to enforce that through GC4.11.2. If the Owner has asked for the names of subs for certain parts of the work, then the bidder must provide those or specifically indicate the general contractor will do those portions.