Architect Sign-Off vs. Owner Sign-Off on Change Orders: When Each Is Required

Two Signatures, Two Different Roles

On most commercial projects governed by AIA-family contracts, a fully executed change order carries two authorizing signatures: the architect's and the owner's. A lot of GCs treat these as interchangeable. They are not. Each party is signing off on something different, and getting them in the wrong order, or skipping one entirely, can leave you holding an unauthorized scope change with no payment guarantee behind it.

Here is a clear breakdown of who signs what, why, and when.

What the Architect Is Actually Certifying

The architect acts as the owner's design representative. When an architect signs a change order, they are confirming three things: that the proposed work is within the general scope of the project, that the adjustment to the contract sum is reasonable given the documented basis of the change, and that the modification is consistent with the design intent and contract documents.

The architect is not authorizing payment. That authority sits with the owner.

Under a standard AIA A201 General Conditions framework, the architect prepares or reviews the change order form, signs it to indicate design concurrence, and then forwards it to the owner for financial authorization. The architect's signature comes first in this sequence. Skipping it and going straight to the owner can cause the architect to reject the change later on review grounds, which complicates your pay application and your relationship with the project team.

What the Owner Is Actually Authorizing

The owner's signature is the financial commitment. When the owner signs, they are agreeing to increase (or decrease) the contract sum and, where applicable, adjust the contract time. No money moves without this step.

This is why chasing only the architect's signature and billing against it is a mistake GCs make more than once. An architect-only signature on a change order does not bind the owner to pay. You need both.

Some owners also require internal approval before signing. A school district, hospital system, or municipal authority may need a board resolution or purchasing department sign-off before the project representative can execute a change. Build that lag time into your schedule. If a $40,000 mechanical change requires a school board vote that only happens monthly, your change order clock starts when that vote occurs, not when you submitted the paperwork.

Construction Change Directives: When There Is No Agreement Yet

Sometimes scope changes are urgent and price agreement is not reached in time. The architect, with owner backing, can issue a Construction Change Directive (CCD). A CCD authorizes you to proceed with the work before the final change order price is settled. It is not a substitute for a fully signed change order. It is a temporary authorization that requires follow-up documentation and a final executed change order once pricing is agreed.

The key point: a CCD requires both the architect's and owner's signatures to be valid. If an architect issues one unilaterally, without owner co-signature, its enforceability is questionable depending on your contract language. Read your A201 provisions carefully.

When the Owner Has Waived Architect Review

Not every project uses architect-administered contracts. On design-build projects, projects with a construction manager at risk, or private projects with simplified contract structures, the owner may have eliminated the architect's approval role entirely. In those cases, the owner or their designated representative, often a CM or owner's rep, handles both the design-concurrence and financial-authorization functions in a single signature.

Know your contract before assuming which process applies. Pull the change order execution clause and read it. If it names the architect as the initial approving party, follow that sequence. If it names only the owner or their rep, a single signature is sufficient.

Practical Steps to Keep Sign-Offs on Track

• Log every change order with a submission date and a required-response date. Most contracts give the architect 10 to 21 days to respond. Track that window.
• Send change orders to the architect first, in writing. Email works. Note the date you sent it. If the architect is unresponsive past the contractual window, send a written notice of non-response.
• Do not bill against a change order until both signatures are on the form. One signature is a promise. Two signatures are a contract modification.
• For CCDs, document your costs daily. Time-and-materials records, subcontractor daily tickets, and equipment logs give you the paper trail to support the final price once negotiations close.
• Confirm the owner's internal approval threshold. Some owners can self-authorize changes up to a set dollar amount, say $25,000, but anything above requires board or executive approval. Ask at the start of the project, not after you submit a $60,000 change.

The Bottom Line

Architect sign-off confirms the change belongs in the project. Owner sign-off commits the money. Both are required on most standard commercial contracts, and they happen in that order for a reason. Know your contract, follow the sequence, and do not bill until both boxes are checked.

Tracking change orders across projects does not have to live in spreadsheets. EZBilling ties them directly to your schedule of values and pay applications, so every approved change is reflected before you submit your next billing.