What Is a Change Order Dispute in Commercial Construction?

Scope modifications, unforeseen site conditions, design revisions, and owner-directed changes are common in Arizona commercial construction. Without a formal amendment, these changes could lead to disputes over costs, time extensions, and payment.

Arizona law, including A.R.S. § 32-1129 and related statutes, governs payment and documentation requirements on commercial construction projects. These statutes, however, do not draft change order clauses. Informal or poorly drafted contracts may omit these clauses entirely, contain vague or incomplete provisions, or impose terms that work against one’s interests.

FR Law Group advises contractors, subcontractors, and property owners throughout Arizona on structuring change order provisions correctly and enforces them when disagreements escalate.

What Is a Change Order in Commercial Construction?

A change order is a formal, written amendment to a construction contract. It alters the scope of work, adjusts the contract sum, revises the project schedule, or addresses any combination of these three elements. Once signed, it is legally binding.

Why Do Change Order Disputes Happen in Arizona Commercial Construction?

Most change order disputes trace back to one of three sources: 

1. Lack of documentation
2. Ambiguous contract language
3. Disagreement over the scope of work

When a contract requires written authorization for all scope modifications, Arizona courts will enforce that requirement regardless of what was discussed and agreed upon in the field. A verbal directive from an owner or general contractor, without a signed change order, is generally insufficient to compel compensation.

What Must a Change Order Include to Be Legally Enforceable?

In general, a change order must contain the following:

• A detailed description of the work added, deleted, or modified
• The adjusted contract sum, itemized by labor, materials, equipment, and applicable markup
• Schedule adjustments or any extension to the substantial completion date
• A release or express reservation of all claims arising from the changed work
• Signatures from all parties authorized to bind the contract
• Any supporting documentation, including sketches, specifications, or updated drawings explaining the change

Vague or imprecise language is a leading cause of change order disputes. For example, a change order that authorizes “additional electrical work as discussed” without specifying the scope, location, materials, methods, or costs leaves both parties room to argue. FR Law Group drafts and reviews change order provisions to eliminate that ambiguity before it becomes the subject of a dispute.

What Are the Legal Consequences of Performing Work Without a Signed Change Order?

Performing scope modifications without written authorization is one of the most costly mistakes a contractor or subcontractor can make. Allow us to explain further below.

When a contract contains a written change order requirement, proceeding without a written approval can forfeit one’s right to additional compensation, regardless of whether the owner verbally directed the work and later declined to execute a change order. Arizona courts have enforced these provisions as conditions precedent to recovery.

There are limited exceptions. Arizona generally recognizes quantum meruit or unjust enrichment as a potential ground for recovery. An example is when an owner accepted and benefited from construction work performed outside the written change order process. Recovery under those theories, however, is fact-specific, uncertain, and far more costly to pursue than obtaining written authorization before the work begins.

FR Law Group advises clients on how to respond when a party resists executing a change order. The team compiles and preserves the documentation necessary to support a claim, and pursues recovery when change orders are wrongfully denied.

Can an Owner Refuse to Execute a Change Order? What Recourse Does a Contractor Have?

An owner may decline to execute a change order. That refusal, however, does not automatically extinguish the contractor’s right to compensation.

The outcome depends on the contract terms, the nature of the work performed, and whether the owner directed, accepted, and benefited from the work in question. For instance, if the work falls outside the original scope and the owner directed it, the contractor may have a valid claim, even without a signed change order. However, such cases are more difficult to prove and more expensive to pursue.

The lack of a signed change order becomes even more consequential when the dispute involves design errors, differing site conditions, or ambiguous specifications. Resolving them generally requires expert testimony. The expert must establish what the parties anticipated when they signed the contract, whether the conditions encountered on the jobsite differed materially from those expectations, and which party bears responsibility for the difference.

How FR Law Group Handles Change Order Disputes in Arizona Commercial Construction

FR Law Group represents contractors, subcontractors, owners, and developers in commercial construction disputes throughout Arizona. Our approach to change orders and claims addresses each stage of a project’s life cycle:

• Review and negotiate change order provisions before you sign, so your contract protects your interests from day one.
• Drafting change orders that are precise, complete, and enforceable, so disputed scope does not become a disputed payment.
• Advising you in real time when an owner or general contractor issues a directive without a corresponding price agreement.
• Building the cost documentation, field records, and correspondence file that substantiates your claim before the other party disputes it.
• Preparing and submitting formal change order claims.
• Negotiating settlements that recover the full value of your claim.
• Taking your claim to arbitration or litigation when the other party refuses to pay or negotiate in good faith.
• Pursuing statutory interest and attorney fees under Arizona’s Prompt Payment Act when payment is withheld without legal justification.

Our team has decades of experience in Arizona commercial construction law. Contact us to review your contract, assess your claim, and discuss legal remedies.

FAQs About Change Orders in Commercial Construction

Do all construction contracts have change order clauses?

It is rare for a formal construction contract to lack change order provisions, but it is not unheard of. To check whether a contract includes this clause, look for terms like “Changes in the Work,” “Variation Orders,” or “Modifications”.

What is the difference between change orders and claims?

A change order is mutually agreed upon. Parties document and authorize these changes before implementation. A claim is a demand, usually for compensation, often resulting from a dispute or disagreement about the change. Change orders are proactive; claims are reactive.

Is a verbal change order enough?

Rarely. Commercial construction contracts require change orders in writing, and Arizona courts enforce that requirement. A verbal directive may support a quantum meruit claim under limited circumstances, but recovery is uncertain and far more costly to pursue.

Can a contractor suspend work over a disputed change order in Arizona?

Under A.R.S. § 32-1129.04, a contractor may suspend performance due to payment delays as long as they provide the proper written notice in advance. Suspending work solely over a change order pricing dispute, without a missed or late payment, gives the other party grounds to claim a breach of contract.

When should a contractor submit a change order claim in Arizona?

That depends on the specific contract’s notice provisions, not Arizona’s statute of limitations. Most commercial construction contracts require written notice within 7 to 14 days of identifying the change.

What happens when an owner approves a change order and then withholds payment?

It constitutes a breach of contract and potentially a violation of Arizona’s Prompt Payment Act. FR Law Group pursues these claims through demand letters, mechanics liens, and litigation.