Anon,
You have a bit of confusion as you state.
There are 3 distinct documents.
Owner/Architect Agreement - The contract between the Owner and the Architect.
Owner/Contractor Agreement - the contract between the Owner and the Contractor.
In the above 2, those parties listed are the only parties in those contracts (typically).
General Conditions for the Contract for Construction - these address and define the roles of parties involved in the construction of the project - they are not a contract. They are in the Project Manual for the project, nowhere else.
You have only 1 document for general conditions. A201 is a standad form, you can mofidy it with supplementary general conditions. If the Owner has his own general conditions, you simply don’t have A201, you have his document. If you feel that it is not providing enough or has gaps in its control, then you can suggest that the Owner modify it or create supplementary general conditions. You can point him to A201 to review for differences.
And since it is the Owner’s document, you should not, unless you engage your legal advisor, actually do those supplementary general conditions, and you should not publish the Owner’s general conditions in your project manual. You can print it for him in a separate binding, but it is generally consider inadvisable to bind it into your project manual as that can be interpreted to assume that you have accepted it and agree to abide by it.
You should indicate to the owner where you observe your division 1 disagrees with his general conditions. You should indicate where you observe your contractural obligations under the Owner/Architect agreement are in conflict or differe. I say observe, because you should not imply that you have performed a review as that may imply a complete legal review.
What to do for conflicts? Where it is conflicting with the Owner/Architect agreement, the Owner needs to change his General Conditions, or he needs to renegotiate those differences with you to change your responsibilities. Where it is conflicting with Division 1, they you advise him as to how it is going to impact the flow of the project.
Sometimes I have seen general conditions that try to put everything in Division 1 into the general conditions. That is not advisable, typically the topics are more logically broken out in division 1, easier to find and undestand. I have also seen general conditions where they have major gaps because they are assuming some things are covered in division 1. But in all of these instances, your only recourse is to advise the Owner that his general conditions should be revised and point him towards A201.
If he does not want to use A201, there is nothing you can do about it. Its his call, not yours. You may want to go on record though with a letter to him how this may cause problems with the project, but that’s about all you can do. You can’t publish A201 in conflict with his - you can’t have dueling documents. That would be worse than anything, and likely the first the the GC would do would be to ask the Owner (not you) which general conditions goverened the work. We know what the Owner will say since he has published his own.
William