Buyer financing risk

What can cause mortgage approval to fail after an offer is accepted?

The direct answer: a mortgage can fail after an offer is accepted because a pre-approval is not final approval. As of November 12, 2026, the lender still needs to verify the buyer’s current income, credit, debts, down payment and closing funds—and approve the specific property, value, mortgage insurer and remaining conditions. A change to the borrower or a problem with the property can reduce the loan or stop it entirely.

By William Lew · Published November 12, 2026

01

A pre-approval is a starting point—not a promise to fund

The Financial Consumer Agency of Canada says a pre-approved amount is the maximum a buyer may receive and does not guarantee a mortgage for that amount. BCFSA likewise warns that a pre-approval reflects the buyer’s circumstances at the time and that financing may still be denied if those circumstances change or the lender does not support the purchase price.

Final approval normally begins only after the lender receives the accepted contract and property details. The lender may then update the credit review, verify documents, assess the property, obtain an appraisal and—when required—submit the application to a mortgage insurer.

02

Borrower changes can break the original calculation

New debt, reduced income or weaker credit can change the debt-service calculation after an offer is accepted. A new vehicle loan, larger credit-card balance, line-of-credit advance, missed payment, job change, reduced hours or an unexplained change in self-employment income can all require the lender to reassess the file.

Federally regulated lenders currently qualify most borrowers using the higher of the mortgage contract rate plus two percentage points or 5.25%. A change in the offered rate, mortgage amount, debts or verified income may therefore affect qualification even when the purchase price has not changed.

  • Do not open new credit or finance a vehicle before completion without lender approval
  • Do not change employment structure, hours or compensation without discussing the effect
  • Keep every payment current and avoid increasing revolving balances
  • Tell the lender immediately about any material financial change
03

The down payment and closing funds must be verified

CMHC advises buyers to document the source of the down payment, recent account history, debts and the property being purchased. Missing statements, unexplained deposits, funds that arrive too late, an unapproved gift or borrowed money described as savings can delay or derail approval.

The deposit already paid is only part of the buyer’s cash requirement. The lender may also need evidence of the remaining down payment and enough money for closing costs. Property transfer tax, legal or notarial fees, adjustments, inspection, appraisal and insurance should not be assumed to come from money already committed to the minimum down payment.

04

The lender must approve the property as collateral

A strong borrower can still face a decline if the property does not meet the lender’s standards. FCAC notes that lenders verify the property before approving the loan, and CMHC explains that the property’s supported value affects the mortgage amount available.

An appraisal below the purchase price can create a cash shortfall because the lender may calculate the loan from the lower supported value. Other concerns can include property condition, marketability, use, zoning, leasehold terms, a very small unit, incomplete construction, environmental issues or an insurer’s refusal. For a strata property, building condition, insurance, litigation, special levies or other project-level risks may also affect lender acceptance.

05

Conditional approval is not the same as all conditions satisfied

A lender may issue an approval that still requires an appraisal, employment confirmation, proof of funds, insurer acceptance, satisfactory strata documents or other documents. Buyers should ask for the complete written list and confirm which items remain outstanding before removing the financing subject.

Rate holds also expire, and a lender’s product or underwriting policy can change. Reconfirm the rate, mortgage amount, payment, amortization, conditions and completion date in writing. For presales and long completions, the financing must be reviewed again closer to completion; an early qualification is not a guarantee months or years later.

06

Use a financing subject that matches the actual risk

BCFSA describes a financing subject as protection that allows a buyer to proceed only if financing can be secured by the stated deadline. It also warns that a subject-free buyer may discover that a pre-approval was not final, potentially risking the deposit and a seller claim if the buyer cannot complete.

The wording and timeline should reflect the buyer, lender and property. A short subject period is not useful if the lender cannot complete the appraisal and document review. Removing the subject should be based on written confirmation and professional advice—not only a verbal statement that the file looks good.

07

Apply the checklist to Greater Vancouver purchases

In South Delta, financing can change when a buyer moves from a Tsawwassen condo to a Ladner townhome, a non-strata duplex or a detached property with a suite. The lender may treat property type, rental income, warranty status, strata obligations and appraisal evidence differently. William coordinates the contract, documents and due-diligence timeline, while the lender decides the mortgage and the lawyer or notary advises on legal risk.

In Vancouver and Richmond, buyers should be especially careful with leasehold interests, small condos, presales, assignment transactions, buildings facing major work and purchases near an insured-mortgage price threshold. The safest approach is to have the lender assess the actual property and provide the outstanding-condition list before subject removal.

08

A practical before-subject-removal checklist

Before removing the financing subject, confirm the following items with the professionals responsible for the transaction.

  • Accepted contract, amendments and MLS information delivered to the lender
  • Income, employment, credit and debts reverified where required
  • Deposit, down payment and closing funds fully documented
  • Appraisal and property review completed or explicitly addressed
  • Mortgage insurer acceptance confirmed when insurance is required
  • Every lender condition listed and satisfied in writing
  • Rate, mortgage amount, payment, amortization and completion date confirmed
  • Buyer understands the contractual and legal consequences of subject removal

Sources

Evidence used on this page.

Financial Consumer Agency of Canada — Getting preapproved for a mortgage Financial Consumer Agency of Canada — Preparing to get a mortgage BCFSA — Should I make a subject-free offer? BCFSA — Are you ready to purchase? CMHC — Mortgage application documentation tips CMHC — Your home value and the mortgage application OSFI — Current minimum qualifying rate for uninsured mortgages

Common questions

Start with a clear answer.

Can a mortgage be declined after pre-approval?

Yes. A pre-approval is not a guarantee. Final approval depends on updated borrower information, verified funds, the specific property, supported value and all lender or insurer conditions.

Can an appraisal cause financing to fail?

Yes. If the lender-supported value is below the purchase price, the available mortgage may be lower and the buyer may need additional cash or another acceptable solution.

Should I avoid new debt after an offer is accepted?

Yes, unless the lender has reviewed and approved it. New debt or higher balances can change qualification and credit before completion.

Does conditional mortgage approval mean financing is final?

No. It means approval remains subject to listed conditions. Ask for the complete written condition list and confirm each item is satisfied before relying on it.

Is a subject-free offer safe if I have a pre-approval?

A pre-approval does not eliminate financing risk. BCFSA warns that a failed mortgage after a subject-free offer can expose the buyer to loss of the deposit and a potential seller claim. Obtain lender and legal advice before taking that risk.

A focused first conversation

Bring the decision. Leave with a plan.

Discuss the property, timing and evidence that matter before choosing your next move.