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quadplex

What Is a Fourplex? Quadplex? 4plex? [PHOTOS]

quadplex
Quadplex and fourplex house plans

*Updated 1-7-2025

A quadplex is a type of multifamily property with four separate units, each with its own entrance and utility setup. By definition, quad plex means four units or parts. Each section of the apartment building and housing structure must be a complete unit and have a separate, lockable front door.

Quadplexes, also called fourplex properties, are considered great investments for real estate investors due to their potential for steady cash flow, passive income, and tax benefits.

what is a quadplex
Quadplex definition

What is a Fourplex? Quadplex? 4plex?

Quadplex, fourplex, or 4plex are terms used interchangeably to describe a multifamily home with individual units. These building structure names all refer to a type of multifamily property and apartment building that has four separate living units, each with a specific, lockable front door or entryway and a complete set of individual utilities (tenant responsible), private bathrooms and individual kitchens. Each unit should also have a private utility meter and separate entrance for each dwelling unit.

These buildings are popular in the real estate market for both new investors and seasoned professionals looking to expand their investment portfolio.

quadplex in texas
Many names for one type of building including fourplex, 4plex, four plex, four family house, quadriplex, quad plex, quadruplex vs quadraplex, and more!

What Are Other Names for A 4plex Home?

Just to add to the confusion, a fourplex can also be called a 4-plex or four plex; other names include quadruplex, quadraplex, 4plex or quadplex.

The front door requirement is important here; there are many multifamily homes and buildings that offer four different living space. For a multi family home to be considered a fourplex, 4plex, 4 plex, four plex, quad plex, fourplex, 4-plex, four-unit building, quardriplex, or four-family house, and our two favorite – the quadruplex and the quadraplex. What is your favorite of the two – quadruplex vs quadraplex?

With all these names, one common characteristic is that all four units must have separate front doors and individual entrances dedicated to their unit.

Quadplex House Plans: Configuration & Design

There’s a lot of variety in fourplex house plans regarding how these multifamily homes and buildings are constructed. A quadplex can feature four units side by side.

Quadplexes can be stacked or a single-story buildings but if land is tight, quadplex plans can also be constructed as a two-story building featuring two lower units and two upper units. As long as the folks who live on the second floor have their own door and a unique lock, the building can be called a quadplex or fourplex.

From an aesthetic and architectural designs perspective, the options are almost as limitless as a single-family property.  Architecture can vary widely from contemporary to barndominium style to modern farmhouse to more Los Angeles or Florida beach-themed designs, these multi family homes are versatile and adaptable to neighborhood trends and what is attractive to potential renters. Most floor plans and site layouts have all the standard design options like garage, dining room, pantry, walk-in closets, patios, window treatments, smart home technology upgrades, etc.

The one primary requirement is that all units must have access to the street.

quadplex plans
Example of large home quadplex plans

Quadplex Floor Plans

The floor plan of each dwelling unit within your quadplex house may be different; if you invest in a two-story quadplex home for rental income and cash flow, it’s possible that the two units on the 1st floor could have two bedrooms, and the two units on the top floor might be one-bedroom apartments, each with different target tenant demographics and varying rental income profiles. Whether you’re debating quadruplex vs quadraplex or considering modern floor plan options, the core design includes four separate, complete living units. These versatile structures offer flexibility in layout and can cater to separate families, ensuring consistent rental income opportunities.

Benefits of Fourplex Homeownership

If you’re considering purchasing property rentals to boost your investment group portfolio, a quadplex can be much more lucrative than a single-family home. Several factors that make rental ownership tougher can be improved with a quadplex, such as:

  • Home Improvement Costs – Maintenance & Repairs
  • Monitoring & Property Management
  • Mortgage costs

The pros of living or owning a fourplex is the overall lower price of the investment and spreading of the risk profile. For example, each tenant has their own utilities. Owners shouldn’t have to worry about water charges or electric bills. You have multiple units in close proximity to each other and under just one roof; so if a Texas hailstorm comes through and causes damage to property rentals, you can repair one roof to protect four units.

fourplex house
Duplex Triplex Fourplex are all great investment choices

House Hacking: Live in Your 4plex. Get Rental Income & Cash Flow From Other Units

By living in your quadplex, you can monitor the other dwelling units on the property easily. If there is a conflict between rental tenants or a particular tenant causing problems, you’ll be right there to address it. The quadruplex is a step up in financial management from the duplex and triplex investments, but not so much as to be a negative factor. A strong case for more tenant diversification of cash flow stability could be made for the 4plex.

You may also choose to take care of mowing and other property management and maintenance issues. With this effort, you can give commercial property rentals the feel of a real home and create loyalty (and lease renewals!) with your tenants.

Because quadplex dwellers are dealing with a shared wall and perhaps a floor/ceiling connection, make sure that you have a definition of nuisance behaviors in your lease agreement and on your website.

One noisy dwelling unit or disruptive neighbor can do a lot to damage the community feel that you’ve so carefully built within your quadplex home and environment. If you must evict a tenant over this behavior, you need justification in writing to get an unwanted tenant out quickly.

House Hacking Savings

By living in your quadplex, you can actually count on your neighbors to pay your mortgage. This classic house hacking technique was popularized by Bigger Pockets for real estate investors is a great way to capture rental income and cover your own living expenses and build equity all at the same time.

As discussed with our duplex house insight and blog post, this residential real estate strategy along with the BRRRR method of investing is an increasingly popular and effective way to step into real estate investing.

If your quadplex house is in a hot climate, you can save on utilities by moving into a lower level unit. If your quadplex home is in a cold location, you might take one of the interior units so you’re not paying to heat the northern-most of all the apartments. Take advantage of the floor plans and site layout!

quadplex home
Duplex, Triplex, Quadplex…oh my!

Multi Family Home Plans: Difference Between Duplex, Triplex, and Quadplex

The quadplex definition is a four unit apartment building. By contrast, a single-family residential home is one dwelling unit within four walls.

A duplex house offers two units, as long as both units have separate living space, private front doors with separate entrances. A triplex is a three dwelling unit building. Investors often debate the merits of investing in duplex vs triplex vs fourplex apartment buildings.

Quadplex: Property Owner Benefits

For those into house hacking like the Bigger Pockets style, the ability to live in your quadplex comfortably is of great importance. If you choose to do your own property management, you can monitor this investment property easily.

Choose your favorite of the four living units and settle in. You can even use the living space or living area as a demo model. Showing off the usable sq. ft. can do a lot to bring other potential tenants and renters in.

Your quadplex should easily and quickly have positive cash flow; with three neighbors kicking in on your mortgage loan payment, your living expenses should stay low!

This real estate investing strategy can help you build up funds for the next property. In our experience in residential construction and over 2500 real estate transactions in Texas with a strong focus on the DFW market. We have experience in all forms of housing including multi family apartments in downtown Dallas, single family homes throughout Texas, renovating duplex houses in Fort Worth, triplexes in Lewisville, and acquiring and managing an amazing cash flow quadplex in Grapevine, Texas.

how much does it cost to build a quadplex
How much does it cost to build a quadplex?

How Much to Build Quadplex Plans?

Depending on your location and zoning, you can build a quadplex for under $400,000. In Texas, land lot prices will vary greatly if you are looking with the boundaries of Dallas TX which would be similar to Fort Worth TX, San Antonio or Houston TX, but very different as compared to Plano TX or Richardson, Texas. Or look even further to smaller areas like Killeen TX and Gainesville TX for very attractive return on investment profiles.

With that purchase price and cost basis around $400,000, you will not have to deal with old damage, poor construction habits of previous owners, or inheriting difficult or unhappy tenants.

Cost To Build A Quadplex? How Much Per Square Foot in Texas?

As noted above, you can get a quadplex build for under $400,000. We estimate that a new building quadplex in Texas would cost $150 to $200 per sq ft to build. It offers a tremendously effective balance of risk and upside reward because rental income is spread over four individual units.

If you want more square feet per unit, you may end up paying more depending on your build schedule and the amenities you want added. Even if you do build a larger multi family building, it’s important to consider one of the best kept secrets about the quadplex; you can actually purchase these with a residential mortgage loan instead of a commercial loan.

This dream financing structure can save you a great deal of money and interest rate expense, particularly as you may be able to put down only a small down payment.

quadplex for sale
How to find a duplex triplex fourplex or quadplex for sale?

Reasons Why A Property Owner Would Put Quadplex Homes For Sale On Local Housing Market?

  • Inherited Property – if a landlord dies and the quadplex house goes to a family member, the next of kin may not so eager to be in the property management business of leaking roofs and water damage or generally involved in residential real estate investing. Owning rental properties is not for everyone.
  • Bad Tenants – Landlords burn out and the tired landlord syndrome is real, One bad tenant or even a squatter can poison the environment of your quadplex; you may actually lose your good tenants because you’re slow in getting the bad tenant out.
  • Financial payments / Mortgage Loans – if a tenant does damage to your multi family building, you can go after them, but you’ll be hard-pressed to get the money in a timely fashion. Meanwhile, every month you’re not renting is negative cash flow and value in your investment properties account. You may need to take out more debt financing and mortgage loans to renovate the fourplex apartment building but struggle to earn much more in rent. At some point, you end up upside down in your investment. Selling may be the simplest way out. The real estate market can be a rollercoaster and stressful if mortgage payments are not made.
  • Repairs & Maintenance – every structure needs basic maintaining and annual checkups. Additionally, while tenants can do damage from the inside, mother nature can tear up your quadplex home from the outside. Insurance does cover some extreme property damage, but insurance deductibles can add up. Again, there are times when selling a quadplex is simply the best option.
  • Retirement – landlords need to retire too. Families or personal injury or illness can also leave property owners unable to monitor and maintain their fourplex multifamily property. Motivated sellers all have their own needs (maybe financial or legal reasons) for wanting to be done with property ownership; a smart real estate investor just need to be ready.

Investment Property: Tax Benefits To Owning A Quadplex

If you plan to live in your quadplex house, you may be able to get a residential mortgage loan on the property instead of a commercial loan which normally is at higher interest rates. This also means you can take the mortgage deduction on your income taxes each year; any profit you make when you sell the property could be protected from commercial tax rules. Talk with your accountant before you assume; pre-planning may be necessary to make sure the quadplex homes for sale proceeds are protected.

quadplex for sale in texas
Quadplex fhome or sale in Texas?

Quadplex Homes For Sale

Now, if you are on board with buying a quadplex for sale and understand and excited about all the benefits of owning a quadplex house and building, the difficult part begins on your real estate investment journey.  Finding a good deal on a quadplex for sale!

As we at Bright Bid Homes are based in Texas in the Dallas Fort Worth region, we know how challenging the current real estate market is to find good deals in the local housing market.  How to find a quadplex for sale in Texas?  Quadplex for sale Dallas TX? Quadplex for sale Fort Worth TX?  These are tough questions and requires deep research, DFW networking with Texas realtors and wholesalers, and combing through online listings on Zillow, Redfin, Trulia, and maybe even Craigslist, and reading all the online forums like Reddit and Quora for information on sourcing deals.

If you are looking to partner on a Texas quadplex for sale, reach out to our team at Bright Bid Homes, we are real estate investors and have a large toolbox of options to find that new off market listing for a quadplex for sale.

The quadplex ownership journey is filled with nuances and opportunities, but getting all the available information about a quadplex house deal and making informed decisions is for sure a path towards long-term wealth creation. If you’re ready to take the next step, don’t hesitate to reach out to our team for personalized quadplex and real estate investing guidance (and Texas deals!) on your way to quadplex home ownership.

what is a fourplex

** Disclaimer: This content aims to provide a general understanding of real estate topics such as multifamily units, investment opportunities, and property values. It should not be construed as financial advice, tax guidance, or a professional recommendation for any property type, including apartment complexes or large multi-unit quadplex properties. Always consult with licensed professionals, such as real estate agents, property managers, or personal finance experts, when evaluating potential investments, managing property taxes, or exploring tax deductions. Readers are encouraged to research vacancy rates, operating income, and market trends before making decisions regarding short-term rentals, commercial real estate, or residential property investments.

*** About the author: Hilary Schultz is a licensed Texas Realtor and experienced real estate professional, specializing in helping first-time homebuyers and investors find good investment opportunities in the DFW metroplex. With her husband Patrick, she has completed over 2,800 transactions across various property types, including multifamily real estate and new properties. Hilary is passionate about educating clients on strategies like house hacking and navigating higher-risk investments with the right balance of reward. As an executive board member of her local Texas PTA and active community leader, Hilary provides a unique advantage by combining local expertise with personalized service. From VA loans to large apartment complexes, Hilary is dedicated to helping clients achieve success through every step of their real estate journey. Check out our top posts, success stories, google reviews for inspiration!

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