Do I have to requalify for a mortgage when my builder home closes?

Yes. The lender underwrites the file that exists at closing, not the one that existed when the agreement was signed. Income, employment, credit, debts, current lending rules and the property's appraised value are all assessed near the closing date, which is why a change during construction can alter the approval.

What happens if a new build appraises for less than the purchase price?

The lender lends against the appraised value at closing rather than the agreed price, so the buyer makes up the difference in cash. This is independent of the buyer's income or credit and needs to be identified early enough to plan for, which is why comparable recent sales in the development are worth checking well before closing.

What are my options if I no longer qualify for my builder home mortgage?

Common routes are moving to a B or alternative lender, increasing the down payment, adding a co-signer who takes full legal responsibility for the debt, clearing a debt that broke the ratios, or assigning or selling the contract where the agreement permits it. New build purchasers can also access a 30-year amortisation on an insured mortgage, which lowers the payment and the qualifying ratio. Every one of these needs lead time, so the review should happen months before closing rather than weeks.

Answers › New Builds & Pre-Construction

I bought a builder home two years ago. What if I don’t qualify now?

Answered by Rajiv Verma, Mortgage Broker · Updated August 2026 · About a 5 minute read

The direct answer

The lender approves the file that exists at closing, not the one that existed when you signed. Today’s income, today’s credit, today’s debts, today’s rules, today’s appraised value. If any of those moved during construction — a job change, a new car, a business that had a hard year, a rate environment that shifted — the approval can look very different. This is solvable, and it is solvable in months. It is not solvable in the two weeks before closing. If your closing is coming and anything has changed, the review needs to happen now.

THE SHORT VERSION

Nothing was guaranteed at signing — the mortgage is underwritten near closing
Income, credit, debts and employment are all re-checked
The property is re-appraised, and a shortfall is your cash problem
Options exist: alternative lenders, more down payment, a co-signer, restructuring debt
Every option needs lead time. Late discovery is what turns a problem into a failed closing

Why this happens so often

Pre-construction contracts are signed one, two, sometimes three years before the keys exist. A great deal happens in three years.

People change jobs. They start businesses. They take on a car loan or a line of credit for the new house. They have a child and one income pauses. None of that is irresponsible — but each of it changes a mortgage application, and nobody tells you the application hasn’t happened yet.

The appraisal problem

This is the one that hurts most, and it’s independent of you entirely.

The lender lends against the appraised value at closing, not the price you agreed years ago. If the market moved against your purchase price, the mortgage is calculated on the lower number and you make up the difference in cash.

Nothing about your income or credit changes that. It’s arithmetic, and it needs to be known early enough to plan for.

The part nobody tells you.

The worst version of this file is the one that arrives two weeks before closing.

By then the builder’s lawyer is asking for funds, the extension may cost you, and every remaining option is the expensive one. Alternative lenders need time. A co-signer needs their own documents. Selling something takes weeks.

Six months out, this is a manageable problem with three or four routes through it. Two weeks out, it is one route, and it costs.

If you have a builder closing on the horizon, the review is worth doing even if nothing has changed — because “nothing has changed” is a thing worth confirming rather than assuming.

What the options usually are

A different lender. If a bank no longer fits, a B or alternative lender may. It costs more, and it closes the deal. The tiers are explained here.

More down payment. Reduces the mortgage and the ratios at once. Often where family help enters — with the documentation lead time that implies.

A co-signer. Effective, and not a small ask. A co-signer takes full legal responsibility for the whole debt, not a share of it. Everyone needs to understand that before anyone signs.

Clearing debt. If a car loan or line of credit is what broke the ratios, removing it may be the cleanest fix — though paying it down usually isn’t enough.

Assignment or sale, where permitted by your agreement. A legal question for your lawyer, and not always available.

One thing in your favour

New-build purchasers can access a 30-year amortisation on an insured mortgage, alongside first-time buyers. A longer amortisation lowers the monthly payment and therefore the ratio — sometimes enough on its own. It costs more interest over the life of the mortgage, and it can be the difference between closing and not.

What to check now

Your firm closing date, and how much notice the builder gives
Whether your income or employment has changed since you signed
Any new debt taken on since — vehicles especially
Your current credit score
What comparable units in the development have recently sold for
Whether your agreement permits assignment

What to do next

Don’t wait for the builder to send the closing package. Send me the agreement, the closing date and your current position, and we’ll find out today whether this is straightforward or needs a plan.

If it needs a plan, you want to know while there’s still time to choose between options.

Review my builder closing →

Related questions

Answered by Rajiv Verma, Mortgage Broker · Mortgage Architects — FSRA Brokerage Licence #12728 · Licensed in Ontario · Office 289.505.0631 · Direct 647.291.7116

General educational information only and not legal advice on your agreement of purchase and sale. Assignment rights, extension terms and remedies are legal matters for your real estate lawyer. Insured mortgage rules stated as at August 2026 and can change.