A good credit score is typically crucial when applying for any mortgage, including large mortgages. Lenders view a strong credit history as an indicator of the borrower’s ability to manage debt responsibly. While a stellar credit score can open doors to competitive rates and terms, some lenders might consider applicants with less-than-perfect scores, especially if there are valid reasons for any blemishes on the credit report. Consulting a mortgage advisor will provide clarity on how credit will impact the mortgage application.