Verbal Change Orders in Ontario Construction: Who Pays?

Ontario construction contractsVerbal change ordersProof, authority + payment

Verbal Change Orders in Ontario Construction: Who Pays?

A verbal construction change is not automatically worthless—and it is not automatically payable. The outcome can depend on the written contract, who had authority, what was actually said, whether the price and schedule were known, what electronic or site records exist, how the parties behaved and whether the work was emergency protection or a genuine owner-approved change.

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16 partsVerbal-change control clause

4 levelsStrength of approval evidence

12 recordsProof to preserve immediately

1 habitConfirm every conversation in writing

“No signed change order means I never have to pay” is too absolute.

A written-change clause is powerful evidence and good project control, but courts and lawyers may also examine authority, waiver, conduct, electronic communications, emergency necessity, reliance and the benefit actually supplied.

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Four levels of change-order evidence

Signed change orderBest evidence: scope, price, credit, fee, HST, holdback, schedule effect and authorized signatures.

Clear email or text acceptanceCan provide strong evidence when the change, price, time effect and decision-maker are unambiguous.

Site direction plus recordsDaily reports, marked drawings, photographs, delivery records and follow-up messages may show what happened.

Conflicting recollectionsWeakest position: no contemporaneous writing, no agreed price, disputed authority and different memories months later.

The goal is not paperwork for its own sake. The goal is to prove scope, authority, price, credit, schedule and permission before either party relies on a different understanding.

Eight common verbal-change disputes

“While you are here” requestThe owner asks a trade to add work without going through the contractor or agreed approval process.

Designer’s site commentA consultant suggests a detail but may not have authority to change price or contract time.

Builder says it is includedThe owner proceeds based on an oral assurance that later disappears from the final account.

Owner says “go ahead”The words may approve investigation, a rough concept or the whole priced change—the context matters.

Emergency protectionImmediate work is required to stop flooding, collapse, fire, freezing or property damage.

Unknown condition discussionThe parties verbally choose a repair but fail to record measurement, price method or responsibility.

Text-message selectionA product choice is approved electronically but the upgrade cost and deleted-item credit are missing.

Course of dealingThe parties repeatedly use informal approvals, creating an evidentiary and waiver dispute over the written procedure.

The 16 parts of a verbal-change control clause

Written-change rule

Critical

Define: State that changed work requires a numbered written approval before performance.

Control: Avoid saying oral discussions are irrelevant in every circumstance; define consequences and exceptions clearly.

Authorized representatives

Critical

Define: Name the people who may request, approve, reject or direct changed work.

Control: State that trades, site staff, consultants and family members cannot bind the parties unless delegated in writing.

Request versus approval

Process

Define: Distinguish “price this,” “investigate,” “prepare a sample” and “proceed with construction.”

Control: Require the approval to identify the exact level of authorization.

Electronic approval

Process

Define: State whether email, text, project software and electronic signatures are accepted.

Control: Define approved addresses, authentication and what information the message must contain.

Scope confirmation

Critical

Define: Require the original contract reference and exact added, deleted or substituted work.

Control: Prevent vague phrases such as “extra work discussed on site.”

Price or pricing method

Money

Define: Require fixed price, unit rates, cost-plus formula or not-to-exceed cap.

Control: No open-ended “reasonable cost plus standard markup” without defined rates and fee.

Credits

Money

Define: Require credit for deleted labour, materials, equipment, tax and applicable fee.

Control: Price the net change rather than the gross replacement item.

Schedule effect

Critical

Define: State added days, procurement effect and revised completion date.

Control: If no time is added, write zero rather than leaving the field blank.

Emergency exception

Process

Define: Allow immediate work reasonably necessary to protect people, property or the improvement.

Control: Require prompt written notice and complete records after the danger is controlled.

Confirmation procedure

Process

Define: Require same-day or next-business-day written confirmation of oral site discussions.

Control: State that the recipient must correct inaccuracies promptly without making silence automatic acceptance.

Daily recordkeeping

Money

Define: Require labour, equipment, material and photograph records for work lacking final price.

Control: Separate changed work from original-scope time and material.

Spending cap

Money

Define: Set a maximum for unpriced directives and require approval before exceeding it.

Control: Stop the owner’s exposure from growing silently.

No-authority work

Critical

Define: State the payment consequence when the contractor proceeds without required approval.

Control: Preserve fair treatment for emergency work and fact-dependent legal rights without inviting casual extras.

Waiver control

Process

Define: State that an isolated informal discussion does not automatically waive the written process for future changes.

Control: Require any continuing waiver or procedure amendment to be documented.

Invoice identification

Process

Define: Require every charge to state the change number or other authorization and supporting quantity.

Control: Coordinate with current Ontario proper-invoice and non-payment notice rules.

Dispute procedure

Process

Define: Require prompt written reasons, preservation of evidence and treatment of undisputed amounts.

Control: Identify negotiation, adjudication, mediation, litigation or other agreed route.

What to send after a verbal site instruction

Subject: Confirmation required — proposed change [number / location]

This confirms our conversation today at [time/location].

Requested by: [name and role]
Original contract item: [drawing/specification/scope reference]
Proposed change: [exact added, deleted or substituted work]
Reason: [owner request / design / site condition / emergency / other]

Price: [fixed amount / unit rates / cost-plus formula / not yet approved]
Credit for deleted work: [amount or pending calculation]
Contractor fee: [amount or percentage and cost base]
HST and holdback: [state treatment]
Schedule effect: [number of days / revised date / no added time]
Design or permit approval required: [yes/no]

Authorization status:
[ ] Price only — do not proceed
[ ] Investigate only up to CAD $____
[ ] Emergency protective work only
[ ] Proceed up to a not-to-exceed amount of CAD $____
[ ] Approved as a complete change order

Please reply with “approved,” “not approved,” or corrections. No non-emergency changed work is authorized unless the applicable approval box and amount are confirmed by an authorized representative.

Do not make silence automatic approval. Ask for an explicit response, and object promptly when someone sends an inaccurate version of the conversation.

Twelve records that can prove or defeat the claim

Contemporaneous email
Send immediately after the conversation while the words and context are fresh.

Text-message export
Preserve the complete thread, timestamps, participants and attachments—not cropped screenshots only.

Daily site report
Record who attended, what was requested, what was said and what work followed.

Meeting minutes
Circulate decisions, open items and objections promptly after every site meeting.

Marked drawing
Show exact location, dimensions, detail and revision date.

Photographs and video
Before, during and after views tied to the alleged change.

Labour time sheets
Worker, date, task, hours and rate for changed work only.

Material records
Quotes, purchase orders, delivery slips, invoices, returns and credits.

Subcontractor quotation
Scope, assumptions, exclusions, fee, tax and schedule effect.

Change log
Request date, status, estimated cost, approved amount, invoice and closeout.

Authority record
Contract page naming who may approve and any delegated authorization.

Objection record
Prompt written disagreement when the other party’s confirmation is inaccurate.

How the disputed amount should be tested

Gross price minus deleted workNew item CAD $15,000; original included item CAD $9,000.Net starting change = CAD $6,000 before authorized fee and tax

Unpriced emergency workVerify only necessary protective labour, equipment, materials and agreed fee.Compensable amount depends on contract, necessity and records

Not-to-exceed instructionVerified cost reaches the written cap before completion.Stop and obtain new approval before exceeding the cap

Contractor correctionWork corrects damage or omitted included scope.Additional contractor cost does not automatically become owner extra

Illustrations only. A verbal-change dispute is not solved by applying a universal markup or assuming every benefit received must be paid at the invoiced amount.

Ontario written-contract and electronic-approval rules

Renovation contracts: Ontario says a home-renovation contract worth more than CAD $50 must be in writing.
New work or price: Ontario’s homeowner guidance says that when an estimate forms part of the renovation contract, the contractor generally cannot exceed it by more than 10% unless the owner agrees to new work or a new price and signs a contract change.
Consumer estimate rule: The Consumer Protection Act, 2002 allows a consumer and supplier to amend an incorporated estimate or price when the consumer requires additional or different goods or services.
Electronic signatures: Ontario’s Electronic Commerce Act generally recognizes electronic signatures as satisfying a legal signature requirement, subject to the Act, any relevant agreement and specified exceptions.
Electronic contracts: Offers, acceptance and other matters material to a contract may be expressed electronically, and a contract is not invalid merely because it is electronic.
Parties can set their own procedure: The Electronic Commerce Act’s electronic-contract rule applies unless the parties agree otherwise. A construction contract can therefore require a particular platform, address, form or authorization process.
Proper invoice authorization: Where the Construction Act applies, the invoice should identify the contract or other authorization under which changed services or materials were supplied.

Email or text can be evidence without being a complete change order.

“Looks good” may approve a colour or drawing but not an undisclosed price or delay. Read the whole communication chain and the contract’s approval rules.

Official references: Ontario renovation rights, Consumer Protection Act, 2002, Electronic Commerce Act, 2000, and Ontario Construction Act.

Bad wording versus controlled wording

Bad: every conversation binds the owner

“Any instruction given verbally by the Owner, the Owner’s family, designer or representative shall constitute an approved change, and the Contractor may charge its standard rates and markup.”

Better: clear authority with narrow exceptions

“Only the representatives named in Schedule A may authorize changed work. Except for work reasonably necessary to protect people, property or the improvement, or work performed under a written not-to-exceed directive, no changed work shall proceed without approval identifying the scope, net price or pricing method, credits, Contractor Fee, HST, holdback treatment and schedule effect. Email, project-platform approval or electronic signature is acceptable only through the addresses and process listed in Schedule A. Oral discussions shall be confirmed promptly in writing. A request to investigate, price or prepare a sample is not authorization to construct. Emergency work shall be limited to necessary protection and documented promptly.”

Educational example only. An Ontario lawyer should adapt authority, waiver, electronic acceptance, emergency, notice and payment wording to the actual agreement.

The best time to document a verbal change is five minutes after the conversation—not five months later.

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Eight verbal-change red flags

“Don’t worry, we will be fair”
No price, fee, credit, quantity or spending limit is recorded.

Trade receives owner instructions directly
The contractor later adds coordination, markup and schedule cost the owner never considered.

Silence after confirmation email
The recipient assumes silence means agreement even though the contract requires active approval.

Price discussed without scope
The parties remember the same number but disagree about what it included.

Scope discussed without price
The owner expected a small favour; the contractor expected cost plus markup.

Unauthorized person says yes
A spouse, designer, site worker or lender representative acts outside actual authority.

No schedule discussion
A small upgrade triggers long-lead procurement and a later delay claim.

Invoice is the first written document
The owner learns the alleged verbal agreement only after the work is complete.

Twenty-four questions before accepting or rejecting the charge

Who spoke?

When and where was the conversation?

Who else heard it?

Did the speaker have authority?

What exact words were used?

Was it a request or approval?

What original scope was affected?

What work was added?

What work was deleted?

Was a price stated?

Was the price fixed or estimated?

Was markup discussed?

Was HST discussed?

Was a schedule effect discussed?

Was a permit or design change required?

Did work start immediately?

What records were created?

Did anyone send a confirmation?

Did the other party object?

Did the owner receive and accept the benefit?

Was the work emergency protection?

Was the written procedure followed before?

Does the contract restrict oral changes?

What undisputed amount remains payable?

Contract Centre and related guides

Verbal construction change-order FAQ

Are verbal construction change orders enforceable in Ontario?

Sometimes, depending on the complete contract and evidence. A written-change requirement is important, but authority, waiver, conduct, electronic communications, reliance and the actual benefit supplied can affect the dispute. A verbal promise is not automatically worthless or automatically enforceable.

Does an Ontario renovation change have to be signed?

Ontario’s homeowner guidance says new work or a new price should be approved and signed as a change to the contract. That is the safest consumer process. A dispute involving work done without that document still requires review of the contract and facts.

Can a text message approve a change order?

Potentially. Ontario’s Electronic Commerce Act recognizes electronic information, electronic signatures and electronic contract formation, unless the parties agreed otherwise. The text should clearly identify scope, price, schedule and the authorized person.

Is saying “go ahead” enough?

Not necessarily. It may mean proceed with pricing, investigation, emergency protection or the full changed work. The surrounding messages, drawings, prior practice, authority and knowledge of price matter.

What should I do after giving or receiving a verbal instruction?

Send a same-day written confirmation stating what was discussed, what is not yet approved, the price or pricing method, the schedule effect and whether work may proceed. Ask for an explicit correction or approval.

Can the contractor charge for emergency verbal work?

Necessary emergency work may be compensable depending on the contract and facts, but the contractor should limit work to protection, give prompt notice and preserve photographs, labour, equipment, material and causation records.

Can the owner refuse every verbal extra?

Not safely as a blanket rule. The owner should dispute unsupported entitlement promptly, request records and follow any Construction Act non-payment procedure while paying undisputed amounts where required.

Can the contractor rely on an invoice as proof of verbal approval?

An invoice proves a charge was requested, not necessarily that the owner authorized the change. Stronger evidence includes contemporaneous communications, authority, scope records, price discussion and conduct.

A verbal instruction becomes expensive when each side remembers a different scope

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Reviewed July 30, 2026. General educational information only. This page is not legal advice and does not determine whether a specific oral, email, text or conduct-based change is enforceable or payable.