What is a fourplex?
A fourplex is a building, or set of buildings on one parcel, with four dwelling units. Typical configurations include two-up/two-down stacked units, four townhouse-style units in a row, or two duplex buildings on one lot. With four rent streams, operations look more like a small apartment building than a rental house.
Four units is generally the upper limit of the residential lending category. That position gives fourplex owners access to residential-style loans while producing more income than a duplex or triplex.
Who buys fourplexes?
Fourplexes draw both owner-occupants and experienced investors:
- Owner-occupants who want three rental units supporting their housing costs.
- Investors who want scale and diversification while staying within residential financing.
- Exchange buyers consolidating smaller properties into one asset.
- Owners who plan to use professional property management.
Financing considerations
Because a fourplex sits at the top of the one-to-four unit range, it can often be financed with residential programs, but lenders may apply stricter standards than for smaller properties. Some owner-occupied programs require the property's rental income to cover a significant share of the payment, and reserve requirements may be higher.
Rate, term and qualification depend on the program, your finances and the property. Get guidance from a licensed loan originator before writing an offer.
What to analyze before you buy
Four units means more income and more moving parts. Focus on verified numbers and the physical plant.
- Rent roll and leases for every unit, including move-in dates and deposits.
- Actual operating history, not just a pro forma, ideally two years of statements.
- Utility metering and which expenses the owner pays.
- Big-ticket systems: roof, foundation, sewer, electrical panels, water heaters.
- Management plan and its cost, whether you self-manage or hire a manager.
- Debt service coverage, cash-on-cash return and price per unit compared with similar sales.
This page is general education, not legal, tax or financial advice. Loan programs, eligibility and local rules change; confirm details with a licensed lender, your tax advisor and the local jurisdiction.