Conventional loans—without pretending Fannie Mae and Freddie Mac are always the same.
Most conventional rules can be explained once. When Fannie Mae and Freddie Mac differ in a way that can change eligibility, documentation, AUS results or approval, Mortgage Navigator calls it out.
How this library works
When the agencies are materially aligned, we explain the conventional rule once. When they differ, you'll see an Agency Difference section showing Fannie, Freddie and why the difference matters to the borrower.
Start here
Fannie Mae vs. Freddie Mac
The master comparison—and where to look when one agency may solve a file the other does not.
Credit score & AUS
Why “620 minimum” is outdated for DU/LPA Accept loans, and where score requirements still matter.
DU vs. LPA
How Fannie's Desktop Underwriter and Freddie's Loan Product Advisor evaluate risk differently.
3% down / 97% LTV
Standard 97%, HomeReady, HomeOne and Home Possible pathways.
HomeReady vs. Home Possible
The two major income-limited affordable conventional options.
2026 loan limits
Baseline, high-cost and special-area conforming limits.
Credit & AUS Deep Dive
Open the Conventional Credit & AUS Navigator →
Credit reports, disputes, collections, charge-offs, authorized users, bankruptcy/foreclosure, mortgage lates, thin credit and no-score borrowers—with Fannie/Freddie differences called out where they matter.
Income & Employment Deep Dive
Open the Conventional Income & Employment Navigator →
Salary, hourly, overtime, bonus, commission, second jobs, future employment, RSUs, seasonal income, temporary leave, military and other income—with agency differences called out.
Self-Employment Deep Dive
Open the Conventional Self-Employment Navigator →
Business history, one-year vs. two-year returns, Schedule C, K-1s, liquidity, business assets, declining income and side businesses.
Rental & Investment Income Deep Dive
Open the Conventional Rental Income Navigator →
Subject rentals, Schedule E, departing residences, new landlords, ADUs, short-term rentals, leases and boarder income.
Debts & DTI Deep Dive
Open the Conventional Debts & DTI Navigator →
Student loans, debts paid by others, installment debt, leases, revolving accounts, HELOCs, business debt and payoff strategy.
Assets & Reserves Deep Dive
Open the Conventional Assets & Reserves Navigator →
Reserves, bank accounts, retirement funds, business assets, earnest money, multiple properties, cryptocurrency and gift-funded reserves.
Gifts, DPA & Seller Contributions Deep Dive
Open the Transaction Funds Navigator →
Gift funds, gifts of equity, seller concessions, down payment assistance, Community Seconds, lender credits and minimum borrower contribution.
Property & Appraisal Deep Dive
Open the Conventional Property & Appraisal Navigator →
Property eligibility, Value Acceptance, appraisal age, condition/repairs, ADUs, mixed-use, solar and leasehold estates.
Condo & Project Review Deep Dive
Open the Conventional Condo Navigator →
Full review, limited review, HOA reserves, structural repairs, special assessments, insurance, litigation and ineligible projects.
Occupancy & Multiple Properties Deep Dive
Open the Occupancy Navigator →
Primary residences, second homes, investment properties, property count, non-occupant borrowers, pending sales and departing residences.
Refinance & Cash-Out Deep Dive
Open the Conventional Refinance Navigator →
Limited/no-cash-out, cash-out, seasoning, delayed financing, subordinate liens, borrower changes and title-change scenarios.
Affordable Conventional Programs
Open HomeReady, Home Possible & Special Options →
HomeReady, Home Possible, HomeOne, Refi Possible, boarder-income exceptions and affordable subordinate financing.
Can This Actually Be Done?
Open Unusual Transactions & Guideline Exceptions →
Family sales, land contracts, lease options, LLC/trust title, owner buyouts, inherited property, non-occupant borrowers, shared equity and “Could the other agency solve this?” scenarios.
Conventional Final Gap Audit
Open the Conventional Gap Audit →
See every major branch and where meaningful Fannie-vs.-Freddie differences can change the answer.
Planned deep-dive branches
Credit & AUS → Income & Employment → Self-Employment → Rental/Investment Income → Assets & Reserves → Debts/DTI → Property/Appraisal → Condos → Gifts/Concessions/DPA → Occupancy → Refinances/Cash-Out → Unusual Transactions.
Official sources
Fannie Mae Selling Guide · Freddie Mac Seller/Servicer Guide · FHFA Conforming Loan Limits
Agency guides control over summaries. Lender and mortgage-insurer overlays can be more restrictive.