A project starts with a signed contract, then the owner requests another outlet, the plans change, or demolition reveals an unexpected condition. The work moves forward, but the paperwork does not. Months later, the parties disagree about whether the extra work was authorized, what it should cost, and who caused the delay. Construction change order disputes often begin with these small gaps. California businesses, contractors, and individual property owners can reduce that risk by documenting scope, price, authority, and timing before additional work begins.
Why construction change order disputes start
A change order records an agreed adjustment to the original construction contract. It might add work, remove work, substitute materials, revise a completion date, or combine several adjustments. Its purpose is to make the revised agreement clear.
Disputes usually arise when the parties have different understandings of the original scope. An owner may consider a task included in the contract price, while a contractor sees it as an extra. A subcontractor may rely on a superintendent’s instruction even though the subcontract reserves approval authority to someone else.
Before treating a request as a change, compare it with the signed agreement, drawings, specifications, exclusions, allowances, and any documents incorporated into the contract. Fixing defective work is not automatically a compensable extra. Unexpected site conditions may justify an adjustment, but responsibility depends on the contract and applicable law.
A practical construction contract review should address the change process before the first dispute develops.
Put scope, price, and schedule in the same document
A useful change order answers more than “Can you do this?” It identifies exactly what changes and how those changes affect the parties’ obligations. Include:
- Project and contract details: Identify the property, parties, original agreement, and change order number.
- Revised scope: Describe added and deleted work, materials, quantities, and relevant drawings.
- Pricing method: State a fixed amount, agreed unit prices, or a time-and-materials formula.
- Cost controls: For open-ended work, specify any spending cap, supporting records, and approval requirements for exceeding it.
- Schedule impact: State any extension, revised milestone, or unresolved delay issue.
- Approval: Obtain signatures from people authorized to bind each contracting party.
Address overhead, profit, taxes, credits, and subcontractor charges where relevant. If the price remains unresolved, say so expressly rather than leaving a blank that invites competing interpretations.
Also distinguish approval to investigate a condition from approval to perform the resulting repair. Permission to open a wall does not necessarily establish agreement on the cost of replacing everything behind it.
California law makes the type of contract important
California Civil Code section 1698 permits a written contract to be modified in writing. It also permits an oral modification to the extent it has been executed by the parties and, unless the contract expressly provides otherwise, an oral modification supported by new consideration. Applicable statute-of-frauds requirements must also be satisfied. The statute preserves certain doctrines, including waiver and estoppel. That means a clause requiring signed changes matters, but it does not resolve every dispute involving oral directions or later conduct.
Do not assume that a text message, payment, or on-site conversation necessarily establishes an enforceable modification. The contract language, authority of the speaker, work performed, and surrounding facts can all matter.
Covered home-improvement contracts have additional requirements. Business and Professions Code section 7159 generally applies to home-improvement contracts between a contractor and an owner or tenant when the aggregate contract price exceeds $500. It requires covered contracts and changes to be in writing and signed before the work covered by the contract or change order begins.
Business and Professions Code section 7159.6 further provides that extra work or a change order is not enforceable against the buyer unless it is approved in writing before that work begins and identifies the scope, the amount added to or subtracted from the contract, and the effect on progress payments or the completion date. The statute also preserves possible recovery under legal or equitable remedies for work performed despite noncompliance. Neither contractors nor owners should treat that qualification as a reason to skip written approval.
Public projects require separate attention to the governing contract and applicable public contracting rules. Private-project habits may not satisfy public-project authorization and notice requirements.
For qualifying private-works contracts entered into on or after January 1, 2026, California Civil Code section 8850 establishes a process for certain change-order claims, subject to statutory exclusions and requirements. The process includes written claims, an owner response generally within 30 days after receipt, payment of undisputed amounts generally within 60 days after the owner's written statement, and subsequent meet-and-confer and mediation procedures for disputed amounts. Check the statute's coverage, notice requirements, and timing rules rather than relying solely on the contract's change-order provisions.
When work must start before everyone agrees
Sometimes a project cannot pause without creating a safety issue, exposing the property to damage, or disrupting other trades. Urgency does not eliminate the need for a record.
- Give prompt written notice. Explain the condition, requested work, estimated cost, and likely schedule impact.
- Check the contract. Follow its notice method, recipient requirements, and deadlines.
- Seek limited authorization. Where appropriate, propose a defined initial scope or spending cap while the parties negotiate the balance.
- Separate the records. Track extra-work labor, materials, equipment, and subcontractor costs independently.
- Document unresolved terms. State what remains disputed and request written clarification.
A reservation of rights can help explain a party’s position, but it is not a substitute for required approval. Likewise, a signed daily ticket may confirm hours or quantities without approving the price. State what the signature means.
Build the record before a payment dispute escalates
Keep the original contract, approved changes, emails, texts, photographs, daily reports, delivery receipts, invoices, and payment records. Organize them by change order number. A dated chronology can show who requested the work, who approved it, what was performed, and when objections arose.
If payment is disputed, identify the agreed and disputed amounts separately. Check mediation, arbitration, notice, and claim provisions before taking the next step. California Code of Civil Procedure section 337 generally provides a four-year limitations period for an action on a contract, obligation, or liability founded on a written instrument, subject to statutory exceptions and applicable accrual rules. The proper period may differ depending on the claim and facts.
Mechanic’s lien rights require prompt review. Claimants other than direct contractors and laborers generally must serve a preliminary notice within 20 days after first furnishing labor, services, equipment, or materials to preserve full lien rights; a late notice generally covers only work furnished within the preceding 20 days and afterward. Direct contractors also generally must give preliminary notice to a construction lender, if any. A lien generally must be recorded within 90 days after completion, subject to shorter periods—60 days for a direct contractor and 30 days for other claimants—after a valid owner-recorded notice of completion or cessation. An action to enforce the lien generally must be filed within 90 days after recordation. Ordinary negotiations do not necessarily preserve these deadlines.
Early legal review can clarify the evidence, contractual requirements, and available options before positions become more expensive to unwind.
Talk to a California business attorney
Itkin Law offers a free consultation for California businesses and individuals facing questions about change orders, contract terms, or disputed construction charges. Schedule a free consultation or call (424) 603-8888.
This article is attorney advertising and provides general information only. It is not legal advice and does not create an attorney–client relationship. The law changes, and this article reflects the law as of its publication date. Every situation is different — contact us to discuss how the law applies to your exact circumstances. See our full disclaimer.
