Change Order Dispute Attorney

A change order is a written amendment to a construction contract that adds, deletes, or revises the work, and adjusts the contract price, the schedule, or both. Nearly every Florida construction contract says a change is not valid unless it is in writing and signed before the extra work begins. Nearly no Florida project actually runs that way. Field conditions shift, the owner says “just take care of it,” the architect issues a sketch instead of a signed form, and the paperwork lags weeks behind the crews. Then the project winds down, the invoices for extras arrive, and one side refuses to honor them.

That is a change order dispute: a contractor or subcontractor carrying real costs for extra work with no signed document behind them, or a property owner holding a bill for “extras” they say they never approved. Those facts can support different affirmative claims. An unpaid contractor may pursue payment for authorized extra work. An owner may seek reimbursement or declaratory relief over charges for work that was never approved. We handle those claimant-side disputes across Tampa Bay as part of our construction litigation practice. Cory Cannon was founded by a Florida attorney with a family history in construction for generations, so we read the records the way the job actually ran: directives, daily logs, time-and-material tickets, pay applications, and the emails in between, as well as the contract language.

What a Change Order Is, and Why the Signature Line Matters

Construction contracts require written, signed change orders for a practical reason: they force both sides to agree on scope, price, and time before the money is spent. A signed change order answers three questions at once: what changed, what it costs, and how many days it adds. When that document exists, there is usually nothing to litigate.

The disputes live in the gap between the clause and the job site. A typical clause says something like “no claim for extra work shall be allowed unless authorized by a written change order signed by the owner prior to commencement of the work.” Contractors call these written change order requirements; lawyers call them conditions precedent to payment. Owners rely on them to cap their exposure. Contractors run past them because stopping a crew to chase a signature costs more than the paperwork seems worth, until the owner refuses to pay.

Two guardrails before going further, because this page covers one specific fight:

• If the work was approved (signed change order, executed contract, no dispute about authorization) and the other side simply is not paying, that is a collection problem, not a change order problem. Start with our construction payment dispute page.
• If the dispute is about what the base contract itself requires (ambiguous scope language, conflicting drawings, allowances, termination), that is a construction contract dispute, and the analysis starts with the four corners of the agreement rather than with an extra-work claim.

How Change Order Disputes Start

The fact patterns repeat. In Florida project records, unsigned-extras disputes almost always trace to one of these:

• Verbal directives. The owner, the owner’s representative, or the general contractor’s superintendent tells a crew to change something on the spot. The work gets done. The signature never does.
• Differing site conditions. The slab is thicker than the drawings showed, the soil will not hold compaction, the existing structure hides rot or corroded connections. The work has to change because the building demands it.
• Design gaps. The plans conflict or omit detail, and someone has to fill the gap in the field. Whether that gap-filling is “extra” or “included” is exactly what the parties end up fighting about.
• Storm-repair scope growth. Hurricane and water-loss repairs are the worst offenders in this region. A roof or wall gets opened up and the real damage is larger than anyone scoped. More on this below, because the hurricane version of this dispute has its own trap.
• “We’ll paper it later.” The parties operate on trust for months (extras are directed, performed, invoiced, and paid without signed forms) and the relationship sours on the last few. The history of informal payments becomes the central evidence in the case.

On the owner’s side, the mirror image: a contractor bills “extras” for work the owner believed was in the base scope, prices field directives at figures no one agreed to, or invoices for work the owner never directed at all. The document fight is the same; only the chair changes.

An Unsigned Change Order Does Not Automatically Kill the Claim

This is the point most contractors and most owners get wrong, in opposite directions. Contractors assume the work speaks for itself and payment must follow. Owners assume the contract clause is an absolute shield. Florida law sits in between, and the outcome usually turns on the conduct of the parties, documented carefully.

Waiver by course of conduct

Florida courts have long held that a written contract can be modified by the parties’ later agreement and conduct, even when the contract says it can only be changed in writing. The Florida Supreme Court set the principle out in Professional Insurance Corp. v. Cahill, 90 So. 2d 916 (Fla. 1956): an oral modification can be enforced, despite a clause prohibiting it, where the parties accepted and acted on the change such that refusing to enforce it would work a fraud on one of them. The court reaffirmed in St. Joe Corp. v. McIver, 875 So. 2d 375 (Fla. 2004), that the parties’ subsequent conduct can modify a contract’s terms.

Applied to change orders: when an owner repeatedly directs extra work, watches it performed, and pays earlier unsigned extras without objection, courts can find the owner waived the written change order requirement by course of conduct. The clause remains relevant. A repeated informal practice can prevent selective enforcement against a later invoice handled the same way.

The limits: Okeechobee Resorts

The doctrine has a floor, and owners’ counsel will stand on it. In Okeechobee Resorts, L.L.C. v. E Z Cash Pawn, Inc., 145 So. 3d 989 (Fla. 4th DCA 2014), the Fourth District tightened the test: the party trying to enforce an oral modification against a no-oral-modification clause must show the modification was mutually accepted and acted upon (both parties’ conduct, not one side’s unilateral reliance) and that refusing enforcement would work a fraud, including that additional consideration was provided and accepted for the modification. A contractor’s own belief that a handshake happened is not enough. What carries the day is contemporaneous evidence that the owner knew, directed, accepted, and behaved as if the deal had changed.

Quantum meruit and unjust enrichment

Quantum meruit (Latin for “as much as he deserved”) lets a party recover the reasonable value of work performed outside a contract’s terms. Florida’s leading construction decision on these theories, Commerce Partnership 8098 Ltd. Partnership v. Equity Contracting Co., 695 So. 2d 383 (Fla. 4th DCA 1997), sets out the elements of the unjust enrichment version of the claim: a benefit conferred on the defendant, the defendant’s knowledge of it, acceptance and retention of the benefit, and circumstances making it inequitable to keep the benefit without paying for it.

Two constraints matter in practice. First, quantum meruit generally cannot override an express contract covering the same work, which is why the fight over whether the extras were inside or outside the contract scope comes first. Genuinely extra work, outside the contract, is where the doctrine breathes. Second, under Commerce Partnership, a subcontractor suing an owner it has no contract with must also show the owner did not already pay someone (usually the general contractor) for that same work. An owner who paid the GC in full is generally not “unjustly” enriched, even if the sub got nothing. That gap is one reason lien and bond rights matter so much for subs, and why the lien analysis runs in parallel in nearly every contractor-side change order case.

Cardinal change and abandonment

When changes stop being adjustments and start being a different project (dozens or hundreds of directives, scope that bears little resemblance to the bid documents), the law has a further concept. Federal contract law calls it a cardinal change: a change so far beyond the contemplated scope that it breaches the contract itself. Florida courts have addressed the same reality through abandonment: where the parties’ conduct shows they stopped performing under the written contract’s terms, the contractor may recover the reasonable value of all the work rather than being held to the original pricing. These are fact-heavy, record-heavy theories. They are built from change order logs, directive counts, and cost histories, which is exactly the kind of record we know how to assemble and, when the numbers are contested, test against independent estimating. When pricing or causation needs outside validation, we retain independent licensed engineers and estimators; we do not ask a jury to take the contractor’s spreadsheet on faith.

For Contractors and Subcontractors: Collecting on Extra Work

A claim for extra work may survive without a signed change order when the evidence supports it. Lien and contract-notice deadlines continue while the authorization dispute remains unresolved.

The lien clock runs on extras too. Extra work you were directed to perform is part of what you furnished to the project, and Florida’s construction lien statute (Chapter 713) protects it on the same unforgiving schedule as base-contract work. Miss these dates and the lien (often the only leverage that gets an unsigned extra paid) is gone:

These deadlines are strict, and how they apply to your dates (especially what counts as “final furnishing” when punch-list and warranty work trail the job) is fact-specific. Run your dates through our construction lien deadline calculator, then confirm them with counsel before relying on any of them. A contractor in direct contract with the owner must also deliver a final payment affidavit at least five days before filing the foreclosure suit (§ 713.06(3)(d)), a prerequisite that quietly kills otherwise valid lien claims. Our construction lien page covers the full sequence.

One caution on lien amounts. Disputed extras belong in a lien only when you have a good-faith basis for them. A willfully exaggerated claim of lien is a fraudulent lien under § 713.31, Fla. Stat., which can void the lien entirely and expose you to damages. A supported disagreement over value may be treated differently. The documentation determines where the claim falls.

Prompt payment interest. On private projects, Florida’s prompt payment statute (§ 715.12, Fla. Stat.) adds interest once a proper payment request goes unpaid past the contractual or statutory window. It applies to amounts due under the contract, which loops back to the authorization fight, but it adds real pressure once entitlement is established.

What we actually do. We reconstruct the extras record: every directive, RFI, sketch revision, daily log entry, T&M ticket, and photo, mapped against the pay application history. We price the claim from your job cost records, not from a round number. We preserve lien and, where they exist, bond rights while the authorization fight plays out. And we watch the lien waivers you are asked to sign at each pay application, because a broadly worded waiver can release the very extras you are fighting for. See our answer to “Should I sign a lien waiver?” before you sign the next one.

For Owners: When the Bill Outgrows the Contract

Owners face the reverse problem: a project that was bid at one number and invoiced at another, with the difference labeled “extras.” Some of those charges are legitimate. Some are base-scope work rebilled a second time. Some were never directed by anyone with authority to direct them.

An owner’s affirmative challenge starts with the contract: the written change order clause, who had authority to approve changes, whether notice requirements for claims were followed, and whether the “extra” was actually within the scope the contractor already agreed to build for the contract price. We check the claimed extras line by line against the drawings, the specifications, the pay application history, and reliable pricing evidence. That is the same document-focused analysis we bring to contract disputes generally.

There is an important limit on an owner’s claim. If you or your representative directed the work, watched it go in, and accepted the benefit of it, Florida’s waiver and quantum meruit doctrines described above can apply even without your signature on a form. Strong owner claims usually include a written objection made when the unapproved work or invoice appeared. If the contractor who billed you was not properly licensed, the analysis changes substantially; our guide to suing a contractor in Florida maps the options.

Hurricane Repairs and Scope Creep

Tampa Bay’s storm seasons generate a disproportionate share of these disputes. After events like Hurricane Ian in 2022 and Hurricane Milton in 2024, repair contracts were signed fast, often from insurance estimates rather than full scopes. Then the roof deck came off, or the drywall came down, and the hidden damage (rotted sheathing, corroded fasteners, saturated insulation, code-required upgrades) turned a $60,000 scope into something much larger. Crews kept working because drying a structure cannot wait for paperwork. The signed change orders never caught up.

The legal analysis is the same as above, and the record is often better than the parties realize. Mitigation photos, moisture logs, adjuster correspondence, and supplement requests may document exactly when the scope grew and who knew it. We use that record to build the client’s affirmative claim.

One routing note: if the extra scope exists because the insurance estimate missed it, the real dispute may not be between owner and contractor at all. It may be with the carrier that is refusing to pay for the supplemental work. That is a different fight, against a different opponent, on different deadlines. Our property insurance claims practice handles it, and getting the carrier dispute moving often defuses the change order dispute entirely.

The Paper Trail Checklist: What Wins Change Order Disputes

Whether you are a contractor pursuing payment for extras or an owner seeking relief from unapproved charges, the same documents decide these cases. Build the file in real time:

• The contract’s changes clause: know who has authority to approve changes and what form approval must take.
• A written confirmation of every directive. A same-day email or text works: “Confirming your direction this morning to [describe work]. We will proceed on a time-and-material basis and submit a change order for signature.” Silence in response to that message is powerful evidence later.
• A running change order log: number every potential change, note the date directed, by whom, status (proposed / directed / signed / disputed), and dollar value.
• Daily logs and dated photos: before, during, and after the changed work, tied to the log number.
• Signed T&M tickets: get the superintendent’s or owner’s representative’s signature on daily time-and-material tickets even when the change order itself is unsigned. Courts treat a signed ticket as acceptance of the work, if not always the price.
• Job cost records segregated by change: labor hours, equipment, and material invoices coded to each extra, so the claim is priced from records rather than estimated backward.
• Written objections. For owners: object in writing the day unapproved work or an unapproved invoice appears. Course-of-conduct waiver is built on silence.
• Careful lien waivers: exclude disputed extras and pending change orders by name from every partial waiver you sign.
• Your lien dates: track first furnishing and expected final furnishing from day one; the lien deadline calculator takes thirty seconds and the deadlines take no prisoners.

Change Orders vs. Delay Claims

Extra work almost always consumes extra time, and the two claims are commonly asserted together, but they are analyzed differently. A change order dispute is about entitlement to payment for changed scope. A delay claim is about compensation for lost time: extended general conditions, idle equipment, acceleration costs, or an owner’s liquidated damages assessment. If your dispute includes time impacts, no-damages-for-delay clauses, or schedule analysis, read our construction delay claim page alongside this one; the two claims are often pursued or defended in the same case, but built on separate records.

Fees, and How We Handle These Cases

Change order litigation frequently carries prevailing-party attorney’s fees: by contract, since most construction agreements include a fee clause, and by statute in lien foreclosure actions under § 713.29, Florida Statutes. Fee-shifting cuts both ways: it can make a well-documented claim substantially more valuable, and it makes a weak claim genuinely dangerous to file. We tell clients which side of that line their records put them on before suit is filed, not after. Our FAQ on who pays attorney fees in construction cases covers the mechanics.

For contractor-side extras and collection work, the engagement may be hourly or on staged flat fees, with fee-shifting pursued against the other side where the contract or statute allows. For owner-side disputes, structure depends on the posture of the case. Either way, the engagement starts the same place: a review of the contract, the change order log, and the correspondence, and a candid assessment of what the paper supports. The initial consultation is free.

Talk to a Change Order Dispute Attorney

Change order disputes are won on records and lost on deadlines. If you are holding unpaid extras, or holding an invoice for extras you never approved, bring us the contract and the correspondence. We will tell you what the documents support and what clocks are already running. Cory Cannon serves contractors, subcontractors, and property owners throughout Tampa Bay. Contact us for a free consultation, or start with our construction litigation overview to see how this dispute fits the larger picture.