Change orders and contracts

Change order disputes and how to avoid them

Most change order disputes come down to four things: no written notice, unclear scope, weak pricing backup, or approval from the wrong person. Fix those at the start of the job and most fights never begin.

Two construction professionals review paper plans beside a tablet at a jobsite workbench.
Plan reviews connect field conditions, drawings, and the next decisions on a job. AI-generated illustration.

Change order disputes are avoided before the change ever happens. Read the changes and notice clauses on day one, define the base scope tightly, give written notice the moment you see extra work, back every price with real cost data, and get a signature from the person the contract names before the crew starts. When a dispute does start, keep working under protest, keep separate cost records, and follow the contract's dispute resolution steps in order.

Disputed changes are rarely about whether the work happened. The owner can see the extra duct run. The fight is over whether it was in the original scope, whether it was authorized, whether the price is fair, and whether notice came in time. Each of those has a fix.

The five most common causes of change order disputes

1. Was it really extra work?

The owner says the work was always in the drawings. The contractor says it was not shown or specified. These fights start with vague scope of work language, missing exclusions, and conflicts between drawings and specs. The order of precedence clause in the contract usually decides which document wins, so know it before you bid.

2. Late or missing notice

Many contracts require written notice within a set window. Federal fixed-price construction is a clear example: under FAR 52.243-4, an informal order counts as a change only after the contractor gives written notice, costs incurred more than 20 days before that notice are not recoverable, and the right to an adjustment must be asserted within 30 days. Any request made after final payment is not allowed. Private contracts often have similar or shorter windows.

3. Approval by someone without authority

A superintendent for the GC or the owner's architect may ask for work they cannot approve. If the contract names one person who can sign changes, a yes from anyone else is weak.

4. Price with no backup

A lump-sum number with no labor hours, rates, or quotes invites a counteroffer. Owners and GCs push back hardest on prices they cannot check.

5. Time left off the change order

A signed change order that adds money but says nothing about time can be read as accepting no schedule impact. Later, when the job runs late, the contractor has no extension to point to and may face liquidated damages.

A prevention process that works on every job

  1. At contract review: highlight the changes clause, notice deadlines, who can approve, markup limits, and the dispute steps. Put the notice deadlines in the project calendar.
  2. At kickoff: agree on the change order form, the approval path, and a target turnaround (for example, five working days) with the owner or GC.
  3. When extra work appears: send written notice the same day, even if the price is not ready. Notice protects the right. Pricing can follow.
  4. When pricing: show labor hours, burdened rates, material quotes, equipment, sub quotes, and markup, plus days of schedule impact.
  5. Before work: get a signed change order, or a signed directive or time and materials ticket if the work cannot wait.
  6. Every week: review open change order requests with the owner or GC and log the status. Old, unsigned requests are where disputes grow.
  7. On every pay app: bill approved changes right away and list pending ones separately so the balance is visible.

Agree on pricing rules before the first change

Many disputes are not about the work at all. They are about markup on sub work, whether supervision is billable, what labor rate applies, and whether small tools and cleanup are included. Settle those at contract signing. A one-page exhibit with labor rates by class, equipment rates, markup on self-performed work, markup on subcontracted work, and how overhead and bond costs are handled removes most of the arguing. If the owner wants open-book pricing on changes, agree on what backup counts: payroll reports, supplier invoices, and rental tickets are typical.

Worked example: a disputed duct reroute

Take an example. A mechanical sub on a $2.1 million medical office finds the duct route shown on the plans clashes with a beam. The GC's super tells the foreman to reroute. The foreman does it over three days and mentions it at the weekly meeting. Six weeks later, the sub submits a $14,800 change order. The GC rejects it: no notice, no approval, and "coordination is in your scope."

Now replay it with the process. The foreman logs the direction with photos and the super's name that afternoon. The PM sends written notice the next morning, citing the clash and the direction, and states that the sub considers it a change. Within a week, the sub sends a priced request: 96 hours of labor, added fittings, a lift rental, markup, and two days of schedule impact. The GC may still argue about coordination responsibility, but now the question is the merits, not whether the sub lost its rights by staying quiet.

Same change, two outcomes
StepWithout a processWith a process
NoticeVerbal mention at a meetingWritten notice next morning
RecordForeman's memoryDaily log, photos, named direction
PricingLump sum six weeks laterItemized within a week
TimeNot mentionedTwo days requested
Likely resultRejected on procedureNegotiated on the merits

What to do when a dispute has already started

  • Keep working unless the contract says otherwise. Most contracts require you to proceed with disputed work while the claim is resolved. Walking off can turn a money fight into a default.
  • Send a formal notice of claim. Follow the contract's claims clause exactly: who it goes to, how, and by when.
  • Track disputed costs separately. Give the disputed work its own cost code so labor, material, and equipment are not mixed with base contract work.
  • Reserve your rights on pay apps and lien waivers. Read waivers before signing. Some waive claims for all work through a date, including unpaid changes.
  • Escalate in steps. PM to PM, then executives, then mediation or arbitration if the contract calls for it. Each step usually has its own deadline.

Templates and tools that help

Use a change order log template to track every request from notice to payment, and a construction change order template that always includes time impact and signature blocks. These guides go deeper on each step: how to price a change order, how to track change orders across projects, and how to invoice change orders without delays.

Smart Business Automator keeps change order requests, notices, approvals, and billing in one record per job, with reminders when a request sits unsigned. See change order approval automation.

Frequently asked questions

Do I have to keep working during a change order dispute?

Usually yes. Most construction contracts require the contractor to proceed with the work, including disputed work, while the dispute is resolved. Stopping work can expose you to a default claim. Check your contract's disputes clause.

What is a constructive change?

A constructive change is extra work the owner effectively required through direction, interpretation, or conduct without issuing a formal change order. Recovering for it usually depends on giving timely written notice under the contract.

How long do I have to give notice of a change?

It depends on the contract. Federal construction contracts using FAR 52.243-4 limit recovery to costs incurred no more than 20 days before written notice. Private contracts vary widely, so read the notice clause before work starts.

Can signing a lien waiver give up my change order claim?

It can. Some waiver forms release all claims for work performed through a date. Read every waiver, and list disputed or pending change orders as exceptions where the form and state law allow.

Sources

  1. Acquisition.gov: FAR 52.243-4 Changes
Written and edited by

Maurice Francois writes and edits construction operations guides for Smart Business Automator. More from Maurice on the Scaling Legends podcast.

Get a free assessment