Is Buying a House Actually a Good Investment? Running the Real Math

Ask a realtor whether buying a house is a good investment and you already know the answer. Ask an actual spreadsheet and it gets interesting. The honest version is “it depends, and the break-even is a lot further out than anyone selling you the house wants to say.” A home can be a fine investment. It can also quietly lose you money for years. The difference is not the house, it is how long you hold it and what you compare it against.

I want to be clear up front: this is not an anti-buying rant. I like real estate as an asset class. But a house gets sold to people as safe, and it is actually a leveraged, illiquid, undiversified bet dressed up in a picket fence. The way I think about it, you should run the same math on a home that you would run on any other position. So let's run it.

The Break-Even Is the Whole Ballgame

The single most useful concept here is the break-even horizon: the number of years you have to own a place before the total cost of buying drops below the total cost of renting the same place.^[1]Below that line, renting wins. Above it, buying wins. Every honest rent-vs-buy answer is really an answer to “how long will you stay?”

The rule of thumb people repeat is 5 to 7 years. That was roughly true in a world of cheap mortgages. It is optimistic now. With mortgage rates sitting near 6% to 6.5%, break-even analyses in 2026 push the crossover closer to 7 to 14 years in a lot of US markets.^[1] Higher rates mean more of your early payments go to interest instead of equity, so it takes longer for ownership to pull ahead. If there is any real chance you move in under five years, the math is usually screaming rent.

Transaction Costs Eat Short Holds Alive

Here is the part the payment calculator hides. Buying and later selling a home is expensive on both ends. Closing costs to buy typically run 2% to 5% of the price. Selling costs more: agent commissions plus closing costs, historically stacking up to a chunk that put the full round trip near 10% of the home's value.

Commissions got shaken up in 2024. Since the National Association of Realtors settlement took effect on August 17, 2024, sellers no longer automatically pay the buyer's agent commission, and that fee is now negotiated separately.^[2] Buyer-agent commissions dipped right after, then rebounded to around 2.4% to 2.5%, so the relief turned out thinner than a lot of buyers hoped.^[2] It does not change the shape of the problem: you are paying a large fixed toll every time you transact, and that toll is dead money the moment you pay it.

Think about what that does to a short hold. If it costs roughly 10% to get in and out, your home has to appreciate about 10% just to break even on the transaction, before you have made a single dollar. Hold for two years in a flat market and you have handed a year of savings to intermediaries. This is why flipping your primary residence every few years is one of the most reliable ways to feel rich while getting poorer.

The Phantom Costs Nobody Puts in the Payment

When people compare rent to a mortgage, they compare rent to the mortgage payment. That is the wrong comparison, because a mortgage payment is not the cost of owning. It is a fraction of it. The rest is the phantom stack that a landlord normally eats for you.

• Property tax. In 2025 the average US single-family home carried a property tax bill of $4,427, an effective rate of about 0.9% of value, and it rose 3% year over year.^[3] In the Northeast the average bill runs far higher, north of $10,000 in New Jersey. This never stops. You are renting the land from the government forever.
• Maintenance.The working rule is about 1% of the home's value per year, and older homes run well above that. On a $400,000 house that is roughly $4,000 a year, every year, for roofs and water heaters and the HVAC unit that always dies in July.
• Insurance and the rest.Homeowners insurance, and in some markets HOA dues, sit on top. When the renter's dishwasher breaks, they text the landlord. When the owner's dishwasher breaks, they get a bill.

Add property tax and maintenance alone and you are often looking at close to 2% of the home's value leaking out every year, none of it building equity. That is the real number to stack against rent, not the mortgage payment.

The Opportunity Cost of the Down Payment

Now the cost nobody sees, because it is invisible by nature. When you put $80,000 down on a $400,000 house, that $80,000 stops working for you as a financial asset and becomes a brick. The question is not just “will my house go up,” it is “will my house go up more than that $80,000 would have somewhere else.”

The long-run comparison is brutal for housing. Robert Shiller's data going back to 1890 shows US home prices barely beat inflation, appreciating close to 0% per year in real terms over the very long run.^[4] The S&P 500, meanwhile, has returned about 10% per year nominally since 1928.^[5] An $80,000 down payment dropped into a broad index fund at roughly 10% would, by the rule of 72, double in about seven years while you did nothing. That is the money the house is quietly costing you.

Why a House Only Looks Like Safety

Housing gets filed under “safe” in most people's heads, and structurally it is the opposite of a safe asset. Look at what it actually is.

It is leveraged. Most buyers borrow four or five times their down payment, which amplifies both gains and losses. It is illiquid. You cannot sell a bedroom to cover an emergency, and unloading the whole thing takes months and that 6%-ish exit toll. It is undiversified. A huge share of a typical household's net worth ends up in one property, in one neighborhood, in one city, tied to one local job market. If you bought where you work and the local economy craters, your home value and your paycheck fall together. No financial advisor would let you put that much of a portfolio into a single stock. Somehow we call it prudent when it is a house.

So When Does Buying Actually Win?

Plenty of times, honestly. The math tips toward buying when you will hold for a long stretch, seven-plus years and ideally more, because that stretches the fixed transaction cost across enough time to make it small. It wins when a fixed-rate mortgage locks your housing cost while rents keep climbing around you. And it wins on a factor spreadsheets miss: a mortgage is forced savings. Most people who “rent and invest the difference” never invest the difference. They spend it. The house makes you build equity whether you have the discipline or not, and that is worth real money to real humans.

There is also the part no formula captures. A home you plan to live in for fifteen years is not really an investment decision, it is a lifestyle purchase with an equity side effect. Stability, a place that is yours, not asking a landlord before you paint a wall. That has value. Just don't confuse it with your best-returning asset, because on the numbers it usually isn't.

The Honest Bottom Line

Is buying a house a good investment? If you hold it seven-plus years, want to live there, and can stomach being illiquid and undiversified, yes, it can be a solid one, mostly through leverage and forced savings rather than raw appreciation. If you might move in a few years, or you are buying because “renting is throwing money away,” the real math says slow down. Renting is not throwing money away. It is paying for flexibility and skipping the 10% toll, the property tax, the maintenance, and the opportunity cost of a frozen down payment.

None of this is anti-buying. It is anti-mythology. Run the actual numbers for your actual timeline, compare against renting and investing the gap, and buy with your eyes open. A house is one asset class among several, with a real return profile and real drawbacks. Treat it like one and you'll make a much better call than the guy whose income depends on you signing.