20 Fun Facts You (Probably) Never Knew About Houses

Our homes are central to our lives—they’re where we eat, sleep, relax, raise families, and create memories. But beyond their walls and rooftops lies a wealth of surprising stories, curious inventions, and historical milestones that many homeowners and renters never consider. Did you know that at one point you could order an entire house from a catalog? Or that brass doorknobs can disinfect themselves? From ancient innovations like Roman central heating to modern real estate records, houses have evolved in remarkable ways across cultures and centuries.

Whether you’re a history buff, a homeowner, or just someone who loves odd trivia, learning about the hidden history and quirky facts of residential life offers a whole new appreciation for the places we call home. This collection of 20 fascinating facts dives deep into the unexpected, the innovative, and the just plain fun aspects of housing—from secret Victorian passages to jaw-dropping modern mega-mansions.

So settle in, and prepare to see your home—and homes around the world—in a whole new light.

1. Sears Used to Sell Mail-Order Houses

From 1908 to 1940, Sears Modern Homes offered an innovative way to buy a house: through the mail. Homebuyers could order a complete house kit from a Sears catalog, with everything needed to build the home delivered directly to their location. These kits included all the materials—lumber, nails, windows, and even paint—along with detailed instructions. Over 75,000 of these homes were sold in hundreds of different styles, and many of them are still standing today, serving as a testament to the quality and durability of these DIY homes.

2. A Creaking House Is Related to Temperature, Not Age

Contrary to popular belief, a creaking or groaning house isn’t necessarily a sign of old age. The noises you hear are typically caused by thermal expansion and contraction. As temperatures and humidity levels change, the materials in your home—wood, metal, and even drywall—expand and contract, causing those familiar sounds. So, the next time your house “talks,” it might just be reacting to the weather!

3. Homes with Black Front Doors Sell for the Highest Price

According to a Zillow survey, homes with black front doors tend to sell for the highest price. The study found that a black front door could add up to $6,449 to a home’s selling price. This bold, classic color exudes elegance and curb appeal, which can make a significant difference when it comes to selling a house. Slate blue front doors also performed well, coming in as a close second.

4. Off-White Houses Are the Most Popular

Off-White Houses

When it comes to exterior home colors, lighter shades are the most favored. A 2023 Alside poll revealed that off-white or cream is the preferred siding color among homeowners, followed by light gray, white, and light brown. These neutral colors are versatile and timeless, making them a popular choice for those looking to boost their home’s curb appeal.

5. Brass Doorknobs Can Disinfect Themselves

Brass Doorknobs Can Disinfect Themselves

Brass doorknobs are not only stylish but also practical. Thanks to a phenomenon known as the oligodynamic effect, unvarnished brass has the ability to kill bacteria on its surface. This self-disinfecting property makes brass an ideal material for frequently touched items like doorknobs, especially in areas where hygiene is a priority.

6. The Typical Homeowner Stays in Their House for 13.2 Years

On average, homeowners in the U.S. stay in their homes for 13.2 years. This tenure has increased over the past decade; in 2012, it was just 10.1 years. The highest recorded average was in 2020, when it peaked at 13.5 years. This trend reflects changing economic conditions and shifts in the housing market, as more people are choosing to stay in their homes longer rather than move frequently.

7. A Seller Must Disclose if a House Is Haunted

In a famous 1991 court case known as the “Ghostbusters ruling,” the New York Supreme Court determined that sellers must disclose if a house is haunted. Failure to do so could lead to the buyer rescinding the contract. This ruling has made it clear that transparency is key when it comes to disclosing any unusual history a property might have, whether it’s paranormal activity or anything else that could affect the buyer’s decision.

8. A Castle in France May Cost Less Than a Teardown in Los Angeles

Believe it or not, you could purchase an 18th-century French castle for just over $1 million. This might seem like a steal compared to the real estate market in Los Angeles, where the same amount might only get you a house in need of a complete overhaul, depending on the location and market conditions. This fact highlights the stark contrasts in property values around the world.

9. Property Tax Started in Ancient Times

Property taxes are one of those inescapable aspects of homeownership, and they’ve been around for a long time—dating back to ancient civilizations. The earliest known property taxes can be traced to ancient Egypt around 5,000 B.C. These taxes were levied on land and property to fund the needs of the state, a practice that continues in various forms to this day.

10. The World’s Biggest House Is 400,000 Square Feet

 

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The title of the world’s largest house goes to Antilia, a 27-story skyscraper in Mumbai, India, owned by billionaire Mukesh Ambani. Covering an astonishing 400,000 square feet, the home features multiple swimming pools, a health spa, a ballroom, and 168 parking spaces, among other luxury amenities. Antilia is not just a home; it’s a symbol of immense wealth and architectural ingenuity.

11. The World’s Smallest House Is 25 Square Feet

On the other end of the spectrum is the world’s smallest house, which measures just 25 square feet. Created by inventor Glen Bunsen, this tiny home is fully functional, fitting a sink, stove, and shower into its compact space. Remarkably, the house is transportable and can even fit inside a standard van, making it the epitome of minimalist living.

12. The Most Homes Sold in One Year Is 6,438

The record for the most homes sold in a single year is held by Ben Caballero, a real estate agent based in Dallas, Texas. In 2020, Caballero sold an astonishing 6,438 homes, a feat that earned him a place in the Guinness Book of World Records. His achievement highlights the potential for high-volume sales in the real estate industry, especially in fast-growing markets.

13. Homes Are Roughly 30 Percent Larger Than They Used to Be

Homes today are significantly larger than they were in the past. According to U.S. Census data, the median size for a single-family home is now 2,299 square feet. In contrast, homes built before or during the 1960s had a median size of around 1,500 square feet. This increase in size reflects changes in lifestyle and the demand for more space and amenities in modern homes.

14. Mark Zuckerberg Bought Four Houses Surrounding His House

In a move that surprised many, Facebook co-founder Mark Zuckerberg purchased four homes surrounding his primary residence in Palo Alto, California, for over $40 million. The reason? Privacy. By owning the neighboring properties, Zuckerberg could create a private compound, ensuring that his home remains a secluded and secure retreat.

15. The First Real Estate Agents Were Called “Curbstoners”

In the early 1900s, the term “curbstoner” referred to an unlicensed dealer, including those in the real estate business. These early real estate agents were essentially unregulated house flippers, selling properties quickly for cash. The term has since fallen out of use, but it offers a glimpse into the early days of the real estate industry before it became the highly regulated field it is today.

16. Homeowners Used to Burn Their Mortgage Documents After Paying Off Their House

In the early 20th century, paying off a mortgage was a cause for celebration. Some homeowners marked the occasion by holding a mortgage burning party, where they would ceremonially burn the mortgage documents. This practice symbolized the end of debt and the full ownership of the home. In Scotland, a similar tradition involves painting the front door red to signify the final mortgage payment.

17. The First Glass Windows Were Used in Ancient Rome

The concept of glass windows dates back to ancient Rome, where the first glass panes were used in buildings around 100 A.D. These early windows were small and often cloudy, but they marked the beginning of using glass to allow natural light into homes while keeping the elements out.

18. The Most Expensive House Ever Sold Costs Over $500 Million

The title for the most expensive house ever sold goes to a mansion in the Bel Air neighborhood of Los Angeles, known as “The One.” Originally listed for $500 million, it was eventually sold for $126 million after going into foreclosure, still making it one of the priciest real estate deals in history. This mega-mansion boasts 21 bedrooms, 42 bathrooms, a 50-car garage, and stunning views of the city.

19. Victorian Homes Often Featured Secret Rooms and Passages

Victorian-era homes, particularly those built in the late 19th century, often included secret rooms and hidden passages. These features were used for various purposes, such as hiding valuables, offering a place of refuge during emergencies, or simply for the amusement of the homeowners and their guests.

20. The First Central Heating System Was Invented by the Romans

The ancient Romans were pioneers in home heating technology. They developed the hypocaust system, an early form of central heating that involved circulating hot air beneath the floors and through the walls of their buildings. This innovation allowed the Romans to enjoy warm, comfortable homes even during the colder months.

These fun and intriguing facts reveal the rich history and surprising details behind the places we call home.

Conclusion

Houses are more than just places to live—they’re filled with history, innovation, and quirks that many of us never knew. From mail-order homes to self-disinfecting door knobs, these fun facts highlight just how fascinating our everyday surroundings can be. Whether you’re looking to add a touch of history to your home or just appreciate the ingenuity of past generations, these tidbits offer a deeper connection to the spaces we inhabit.