Conventional loan requirements depend on the specific program, automated underwriting findings, occupancy, property type, and borrower circumstances. What follows is a general framework — not a checklist that guarantees approval.
Who this may fit
This guide is for prospective borrowers who want to understand what a lender typically looks at before applying for a conventional loan.
Key decision factors
- Credit score and credit history (thresholds vary by program and pricing tier)
- Debt-to-income ratio, often measured back-end
- Down payment and source of funds
- Reserves (months of mortgage payments in liquid assets)
- Property type and occupancy (primary, second home, investment)
- Employment and income documentation
Illustrative example
Common mistakes
- Treating a single online minimum as the definitive requirement
- Underestimating reserves for second homes and investment properties
- Assuming credit-score cutoffs are the same across all lenders
Questions to ask a licensed loan officer
- Which program's guidelines are you using for my file?
- What documentation will be required for income and assets?
- Are there compensating factors that could help my scenario?
Sources
We link to primary sources for every substantive claim. Publication dates below are marked as unverified until confirmed under our Source Policy.
- Fannie Mae Single-Family Selling GuideFannie Mae · Published/effective: living document · Last checked: 2026-07-28
- Fannie Mae Announcement SEL-2026-06 — Selling Guide UpdatesFannie Mae · Published/effective: 2026-06-03 · Last checked: 2026-07-28
- Desktop Underwriter Credit Risk Assessment UpdatesFannie Mae · Published/effective: Effective for casefiles submitted on/after 2025-11-15 · Last checked: 2026-07-28
- Fannie Mae Announcement SEL-2025-09 — Selling Guide UpdatesFannie Mae · Published/effective: verified reachable · Last checked: 2026-07-28
- Freddie Mac Single-Family Seller/Servicer GuideFreddie Mac · Published/effective: living document · Last checked: 2026-07-28
- Freddie Mac Single-Family Seller/Servicer Guide § 5203.2 — Credit assessment with Loan Product AdvisorFreddie Mac · Published/effective: living document · Last checked: 2026-07-28
- Freddie Mac Guide Bulletin 2026-7Freddie Mac · Published/effective: 2026-06-03 · Last checked: 2026-07-28
- CFPB Regulation B (12 CFR Part 1002) — Equal Credit OpportunityConsumer Financial Protection Bureau · Published/effective: Most recently amended 2026-07-21 · Last checked: 2026-07-28
Related guides and calculators
- What Is a Conventional Loan?
A plain-English explanation of conventional loans: how they work, who they may fit, and key decision factors.
- Conventional Loan Down Payment
How down payment affects PMI, monthly payment, cash to close, and long-term outcomes on a conventional loan.
- Conventional Loan Limits
How conforming loan limits work, why they change, and how county limits affect your options.
- First-Time Home Buyer Guide
Conventional-loan options that may fit first-time buyers, and the decision factors that matter most.