A duplex is a residential building that contains two separate dwelling units on one lot. The units may sit side by side or one above the other, and each has its own entrance, kitchen, bathroom and living space.
In most cases a duplex is owned as a single property under one deed, which sets it apart from a pair of condominium units or two attached townhomes that are owned separately.
How it works
Because both units sit on one parcel, a single owner can live in one unit and rent the other, or rent both. Duplexes are usually classified as residential property, so buyers can often use residential mortgage programs. Financing for two to four units is generally available, and owner-occupants may qualify for lower down payment options than investors.
Each unit typically has its own lease and its own tenant. Utilities may be separately metered or shared, depending on how the building was built.
Pros and cons for investors
Advantages:
- Two income streams from one property, so one vacancy does not wipe out all your rent
- Shared roof, lot and systems can lower maintenance costs per unit
- A practical entry point for new investors, especially through house hacking
- Easier to manage up close than a scattered set of single-family homes
Drawbacks:
- Higher purchase price than a comparable single-family home
- Tenants share walls, so noise and neighbor issues come up
- Shared utilities can make billing more complicated
- Smaller pool of buyers when you sell compared with single-family homes in some markets
Example
A hypothetical buyer purchases a duplex, moves into one unit and rents the other for $1,700 a month. That rent covers a large share of the mortgage, lowering their housing cost while they build equity. When they move out later, both units become rentals.
Why it matters for landlords
Duplexes combine some of the simplicity of single-family homes with the efficiency of multifamily property. If you are evaluating one, look at both units’ leases, separate utility setups and the cash-on-cash return you expect. Make sure both units are legal by checking permits or the certificate of occupancy. Tools like TenantLoop rent collection let you manage both units’ rent and charges from one dashboard.
Related terms
Related questions.
Can I get a residential mortgage on a duplex?
Usually. Two to four unit buildings are generally treated as residential property, and owner-occupants may qualify for lower down payment options than investors. Ask your lender which programs apply.
What is house hacking with a duplex?
Living in one unit and renting the other. The rent from the second unit covers part of the mortgage while you build equity, and both units can become rentals when you move out.
How is a duplex different from two townhomes?
A duplex is usually one property on one deed with two units. Attached townhomes or two condo units are typically owned separately.