Occupancy changes the underwriting
A primary residence, second home and investment property are different financing categories. Do not describe a rental as owner-occupied to obtain different terms. Unit count, property condition, appraisal and the proposed use can affect eligibility and pricing. A lender needs the actual occupancy plan, not simply the most favorable category.
Understand the rental-income method
Conventional underwriting can use leases, appraisal rent information, tax returns and program-specific adjustments. Fannie Mae rental guidance varies with the property and borrower history. Business-purpose DSCR products use another framework and are not a universal replacement for personal underwriting. Ask which income and expense method is used.
Budget for vacancy and capital work
Separate rent after operating expenses from cash after mortgage payments. Include a maintenance and replacement allowance even when the property is currently occupied. Model a vacancy period and an insurance or tax increase, and confirm any lender-required reserves separately from your own buffer.
A question worth asking
Can I use a website’s DSCR as lender approval?
No. A lender may define income and debt service differently and apply additional eligibility rules.
Check the source
Primary references checked October 28, 2026. Rules and product availability can change; confirm the requirements for your actual transaction.