Lawyer Mortgage Closing Resource Centre · Title & Priority

Second Mortgages, Postponements and Priority: A Coordination Guide

Ontario coordination for second mortgages, existing charges, postponements, readvanceable security and lender priority expectations at closing.

Mortgage-side review by Parasdeep Singh, Principal BrokerLast reviewed August 25, 2026Ontario legal-closing coordination resource

Second mortgage

Must be underwritten against the actual charge structure

Postponement

Requires creditor/legal cooperation, not broker assumption

Readvanceable debt

Current balance may not describe the security

LTV

Credit sizing and legal priority must agree

Underwrite the second mortgage against the actual security structure

A broker may size a second mortgage using current balances, but counsel sees the registered charges. If the first-position security is collateral, readvanceable or registered for an amount materially different from the current balance, that can matter to the incoming lender's risk and priority expectations.

The brokerage should therefore provide the incoming second lender with the best available description of the existing product and should update the lender if counsel's title review reveals a materially different charge structure.

Do not sell a transaction on a postponement that has not been obtained

A refinance may assume that an existing secured line, vendor take-back or other charge will postpone behind the new mortgage. That is a dependency on another creditor. The broker should identify it early, determine what the incoming lender requires, and avoid presenting the transaction as fully executable until counsel confirms the legal path.

If the creditor refuses or imposes conditions, the mortgage may need to be resized, paid out differently or moved to another lender. That is a credit solution, not something counsel should be expected to negotiate away without lender involvement.

Combined loan-to-value is only meaningful if the lien map is correct

A second-mortgage approval commonly depends on the balance ahead of it. If the broker uses an understated first-mortgage balance, ignores a secured line, or assumes another charge will disappear, the combined LTV may be wrong. The legal title review should therefore be treated as a verification point for the lender's security stack.

Where title differs from the application, the brokerage should update the valuation/LTV model and obtain lender approval before closing.

Payout and postponement are different transaction strategies

A charge can be discharged, left in place ahead, or—if legally and contractually possible—postponed. Each result changes the lender's security and often the amount of net cash available to the borrower. The brokerage should make the intended strategy explicit in the commitment and closing summary.

If the strategy changes from postponement to payout because a creditor will not cooperate, the broker should recalculate proceeds and verify the incoming lender still approves the file.

Private first and second mortgages need particularly explicit coordination

Private lenders may have bespoke security requirements and may not use standardized institutional discharge/postponement processes. A second private mortgage behind another private charge should therefore have a clear lender-approved priority map and direct legal contacts.

The broker should not mediate substantive legal priority language between counsel. The brokerage can explain the commercial deal; the lawyers and lenders should settle the legal instrument.

Broker + lawyer coordination

Need a mortgage file clarified before closing?

Contact the brokerage for lender terms, mortgage disclosures, funding figures or a credit decision. Legal advice, title conclusions and the conduct of the legal closing remain with counsel.

Contact the brokerage

Frequently asked questions

Can a mortgage broker promise that an existing lender will postpone?

No. The broker can identify that postponement is required, but the existing secured creditor and counsel must complete the necessary legal arrangement.

Why can a HELOC complicate a second mortgage?

A secured revolving/readvanceable facility may have a legal charge structure that is not fully described by the current balance. The incoming lender should underwrite the actual security position.

What if title shows an unexpected charge?

The brokerage should update the lender and recalculate the security/LTV assumptions. Counsel determines the legal options for the charge.

Can a payout replace a planned postponement?

Possibly, but it changes funds flow and may change the credit approval. The brokerage should obtain lender approval before treating it as an equivalent solution.

Primary sources

Law Society requirements, legislation, lender instructions and title-insurance practices can change. These resources explain the broker-to-lawyer interface and do not replace legal advice, counsel’s professional judgment, lender instructions or applicable law.