Welcome to the tenth NREB Premium briefing. Yesterday's free edition laid out the upfront-cash mismatch squeezing buyers everywhere. This issue is about a property type most of those buyers, and plenty of agents, have already ruled out with arithmetic that stopped being true almost three years ago.

Here is the belief. A buyer mentions a duplex, a triplex, a fourplex. Somebody at the table, sometimes the agent, says the sentence that ends the conversation: "That's an investment property. You'll need twenty, twenty-five percent down." On a $600,000 fourplex, that is $120,000 before closing costs, and the conversation is over, because nobody in the room has $120,000. The buyer goes back to shopping single-family listings, the fourplex goes to an investor, and everyone involved believes math was the thing that decided it.

Except the premise was wrong. A two-to-four-unit property that the buyer will genuinely live in is not automatically underwritten like an investment property, and the down payment difference between those two categories is not a rounding error. It is, on that $600,000 example, ninety thousand dollars.

The word doing all the work is occupancy. Mortgage underwriting does not price the building; it prices the relationship between the borrower and the building. A fourplex the buyer rents out entirely is an investment property, with investment-property down payments and pricing. The same fourplex with the buyer living in one unit as their true principal residence is, in the underwriting world, a home, one that happens to have three rentals attached, and it qualifies for owner-occupied financing.

For decades that distinction helped less than it should have, because even owner-occupied conventional loans on multi-unit properties demanded large down payments, historically 15% on a duplex and 25% on three and four units. Then, effective for automated underwriting casefiles the week of November 18, 2023, Fannie Mae dropped the requirement to 5% down for owner-occupied purchases of two-, three-, and four-unit properties. Freddie Mac's current loan-to-value matrix likewise permits up to 95% financing on eligible 2-4 unit primary-residence purchases receiving an automated Accept, with meaningfully lower maximums for manually underwritten files, roughly 85% on two units and 80% on three and four, which is one of several reasons this strategy runs through automated approval and a lender who knows the terrain, not through wishful thinking.

Run the arithmetic on the fourplex. The buyer thinks 20% means $120,000, and under standard agency investment-property treatment, a 2-4 unit purchase can require even more, with maximum financing around 75%. But genuine owner occupancy can change the category entirely: at the owner-occupied 5%, the down payment is $30,000. Same building, same price, same buyer, $90,000 apart from the number in the buyer's head, purely on which side of the occupancy line the transaction truly sits.

Three honesty notes before anyone gets excited, because each one is load-bearing.

First, "truly" is doing real work in that sentence. Owner-occupancy is a legal representation in the mortgage documents, not a checkbox strategy. The borrower must actually move into one of the units and live there as their principal residence. Pretending to occupy while renting all four units is occupancy fraud, a federal matter, and nothing in this issue works, or is meant to work, for a buyer who will not genuinely live in the building. The legitimate version is straightforward: the buyer lives in one unit as their actual home and rents the others. That is exactly the owner-occupied structure these financing rules contemplate.

Second, 5% down is a program maximum meeting an automated approval, not a promise. Mortgage insurance applies above 80% financing, lender overlays vary, and, as you are about to see, the down payment is not the only cash the file requires.

Third, and this is where the whole strategy either lives or dies: the buyer still has to qualify for the loan. On the $600,000 example at 95%, that is a $570,000 mortgage, and very few of the buyers this issue describes can carry a $570,000 payment on their income alone. Which raises the questions that actually decide these transactions, and they are exactly the questions the standard agent conversation never reaches: Can the rent from the other three units count toward qualifying the buyer? How much of it? What does the lender accept as proof of rents that do not exist yet on units the buyer has never owned? What happens if the buyer has never been a landlord in their life, which describes nearly all of them? How much must be left in reserve after closing? And what precisely makes the file an owner-occupied primary residence in the eyes of the underwriter rather than an investment property wearing a costume?

Get those answers right and a renter with modest savings buys a $600,000 building. Get them wrong and the file collapses in underwriting three weeks after your buyer fell in love with it. The answers are specific, they come from the agencies' own rules, and they are below.

Past the break: the complete worked fourplex, from rents to reserves to the honest total-funds figure, including the restriction tiers that catch first-time landlords and rent-free buyers and how the numbers behave under them, the occupancy requirements in plain terms, why the automated-versus-manual distinction quietly controls the down payment at both agencies, how projected rents get documented on units with no history, the reserve and mortgage-insurance realities, where loan limits sit for multi-unit properties including the high-balance exception, the FHA alternative and the additional test it carries on three- and four-unit purchases, the lender-vetting questions, the buyer script, the four objections, the property-search process for a category the portals handle badly, a client one-pager, and the weekly audit….