Fourplexes

A fourplex, also known as a quadruplex or quadplex, is a multifamily residential building that contains four separate dwelling units. Each unit typically has its own entrance, kitchen, bathroom, and living spaces. The four units are usually housed in a single building that is attached to neighboring units or arranged in a row with shared walls.

Configurations vary. Common layouts include two stories with two units on each floor, or a single-story plan with four units organized around a central corridor or stairwell. External designs can range from a compact rectangular block to deeper L-shaped or U-shaped footprints, and the building may be part of a larger development or a stand-alone structure.

Ownership and financing: A fourplex is typically owned as a single property that rents to four households. Owner-occupied fourplexes may qualify for conventional financing or certain government-backed loans in some markets, with loan products and down payment requirements differing from those for single-family homes. Lenders often consider the property as a small multifamily asset for underwriting purposes.

Zoning, regulation, and design: Zoning rules determine whether fourplexes are permitted, allowed with conditions, or restricted in a given area. Building codes require fire separation between units, safe egress, and often separate utility services or metering. Design standards may address parking, energy efficiency, accessibility, insulation, and sound attenuation between units.

Economics and management: Fourplexes offer higher density and potential rental income while maintaining a more manageable scale than larger apartment buildings. They can reduce per-unit ownership costs but require ongoing property management, maintenance, and attention to vacancy risk, insurance, taxes, and any homeowners association rules if applicable.