Underwriting

May 21, 2025
What is Underwriting?
Underwriting is the process lenders use to assess a borrower’s risk and determine whether to approve a mortgage application.
Why Underwriting Matters in Real Estate
In Canadian real estate, underwriting plays a critical role in securing mortgage financing. Lenders review credit history, income, assets, employment, and the property itself before making a loan decision.
Steps in underwriting may include:- Verifying income and employment
- Reviewing credit score and history
- Assessing debt service ratios
- Appraising the property’s value and condition
Automated underwriting systems may issue quick decisions, while complex applications (e.g. self-employed borrowers) are reviewed manually.
Understanding underwriting helps buyers prepare accurate documents, reduce delays, and improve approval odds.
Example of Underwriting in Action
The lender’s underwriter reviews the buyer’s income, credit, and appraisal to approve the mortgage before closing day.
Key Takeaways
- Evaluates borrower and property risk.
- Required for mortgage approval.
- May be automated or manual.
- Relies on complete documentation.
- Crucial step in the financing process.
Related Terms
- Mortgage Qualification
- Credit Score
- Debt Service Ratios
- Appraisal
- Lender Guidelines

A rendering of the first two buildings, 119 and 151 Bruce Street, which will total 500 homes. (Courtesy of Medallion Corporation)
A rendering of a proposed park that would add significant green space to downtown Oshawa. (Courtesy of Medallion Corporation)
A drawing of ReHousing Co-Founder Michael Piper's triplex in Toronto's east end/ReHousing
Some of the housing configurations available through the design catalogue/ReHousing 











Renderings of the tower proposed for 1394 Robson Street in Vancouver. (Arcadis, Asia Standard Americas)
Renderings of the tower proposed for 1394 Robson Street in Vancouver. (Arcadis, Asia Standard Americas)
Source: CREA Stats XML via HomiesAI.com AI Harness for Realtors
Source: CREA Stats XML via 

Annacis Island
The Vue at 2830 Peatt Road in Langford, British Columbia. (Boardwalk REIT)
The preliminary proposal for the Lynn Valley Safeway at 1170 E 27th Street in North Vancouver. (Crombie REIT)