How much do you really need down? Primary homes start at 3%, second homes at 10%, investment properties at 15-25%. The Fannie Mae & Freddie Mac rules, explained simply.

The same buyer needs a very different down payment for a home they'll live in, a vacation place, or a rental. Here's why lenders treat all three so differently — straight from the Fannie Mae and Freddie Mac rulebook.

When you apply for a conventional loan, one of the first things the lender pins down is occupancy — will this be your primary residence, a second home, or an investment property? That single answer changes your minimum down payment more than almost anything else, because it changes how risky the loan looks to Fannie Mae and Freddie Mac.

Primary residence — the lowest bar

The home you actually live in gets the friendliest terms because you're the least likely to walk away from it. Through Fannie Mae's HomeReady® and Conventional 97 programs, a first-time buyer can put down as little as 3% on a single-family primary home; 5% is the standard minimum otherwise. These low-down programs also allow gift funds and down payment assistance.

Second home — a step up to 10%

A second home is a place you use personally for part of the year — a lake house, a beach condo — not a full-time rental. Fannie Mae requires a minimum 10% down on these. One key rule: you can use it yourself (even rent it short-term), but you cannot count any rental income to qualify, and it has to make sense as a personal-use property, not a disguised rental.

Investment property — 15% to 25%

A property you buy to rent out — and don't live in — carries the most risk, so it needs the most cash. For a single-unit investment property, Fannie Mae's minimum is 15% down. For a 2-to-4-unit investment property, expect 25% down. Investment loans also tend to run about half a point higher on rate, and lenders often want cash reserves on top of the down payment.

One exception worth knowing: if you'll live in one unit of a 2–4 unit building (owner-occupied), Fannie Mae now allows as little as 5% down — because that flips it back to a primary residence.

Why the gap exists

It all comes down to who pays first when money gets tight. People protect the roof over their own head before a vacation home, and a vacation home before a rental. A bigger down payment on second homes and investments gives the lender a cushion against that risk — which is exactly why the minimums climb as the home gets further from "where you live."

Sources: Fannie Mae Selling Guide (occupancy types & minimum down payment: primary 3–5%, second home 10%, investment 15–25%; 5% owner-occupied 2–4 unit option); Freddie Mac conventional loan guidelines; HomeReady® program requirements. Government-backed FHA and VA loans finance primary residences only.