Which of the following types of properties qualifies for Fannie Mae loans?

Fannie Mae loans are designed to support certain types of residential real estate, making the option of small residential income properties with 2-4 units the correct choice. These properties qualify as they fall within Fannie Mae's guidelines for what constitutes acceptable collateral for residential mortgages.

Small residential income properties, specifically those with two to four units, can be financed through Fannie Mae as they are considered residential properties. This means the loan can be supported by the income generated from the rental units while still maintaining residential borrowing standards, benefiting both the borrower and Fannie Mae.

In comparison, multi-family dwellings over four units do not qualify because they fall into a commercial category rather than a residential one. Commercial properties are entirely distinct from residential options, and vacation homes only represent a specific use case that also does not align comprehensively with Fannie Mae's typical residential guidelines. Thus, focusing specifically on properties that fulfill the criteria of being residential and generating rental income is critical when identifying qualifying properties for Fannie Mae loans.