Why $/sq.ft is the wrong first question?

When shopping for a home, one of the first questions people ask is:

"What’s the price per square foot?"

It has become one of the most commonly used shortcuts in real estate. Buyers compare neighbourhoods, listings, and markets using a simple formula:

Price ÷ Square Footage = $/Sq.Ft.

But imagine applying that same logic to buying a car.

A Honda Accord has a footprint of roughly 103 square feet. At a purchase price of about $40,000 CAD, that’s approximately $390 per square foot.

A Tesla Model 3 has a footprint of roughly 104 square feet. At a purchase price of about $60,000 CAD, that’s approximately $575 per square foot.

By this metric alone, the Tesla appears to be significantly worse value. But nobody shops for cars this way. Nobody walks into a dealership and asks:

“What’s the dollar-per-square-foot cost of this vehicle?”

In fact, most people have no idea how many square feet their vehicle occupies.

Instead, they ask questions that actually relate to ownership:

• What’s the fuel economy?

• How reliable is it?

• What are the maintenance costs?

• What will insurance cost?

• What is the total cost of ownership?

Those questions focus on what it costs to live with the vehicle after the purchase.

Why don’t we approach homes the same way?

A Home’s Equivalent of Fuel Economy

When buying a car, fuel economy is one of the first numbers people look for. A vehicle that burns 12 litres per 100 kilometres is fundamentally different from one that burns 6 litres per 100 kilometres. The purchase price may be similar, but the ownership experience is not.

Homes have an equivalent metric: energy consumption.

Consider two 2,000-square-foot homes.

Both sell for $600,000.

Both have a price of $300 per square foot.

On paper, they appear identical.

But one is built to Passive House performance standards and the other is a conventional home.

The conventional home may require $3,000 to $5,000 per year in heating and cooling.

A Passive House may require only a few hundred dollars per year. That difference alone can add up to well over $100,000 in operating costs over 25 years, before accounting for rising energy prices. Yet both homes would still be advertised at the same $/sq.ft.

The traditional metric tells you they are equivalent. Their performance tells you they are not. It would be like comparing two vehicles solely on purchase price while ignoring that one uses half (or less) the fuel of the other.

Your Home Never Stops Running

There is another key difference between homes and cars. Cars mostly cost money when you use them. If a car sits parked for a week, it doesn’t meaningfully consume fuel. A home doesn’t work that way. A home is operating 24 hours a day, 365 days a year, whether you are inside it or not.

Even when you are at work, asleep, or on vacation, it continues to:

• Heat or cool interior spaces

• Run ventilation systems

• Maintain humidity and air quality

• Power base electrical loads

• Age and wear building systems

The meter never stops. In many ways, a home behaves less like a consumer product and more like a continuously running system. It has ongoing operating costs that do not depend on active use. That is the critical difference. Every inefficiency is not a one-time cost—it is a recurring expense.

A Home Is Not a Product. It’s a System.

Every home consumes resources:

• Electricity

• Heating fuel

• Water

• Maintenance

• Repairs

• Insurance

• Property taxes

  
  

Two homes with identical square footage can have dramatically different ownership costs. One may require thousands per year in energy alone. The other may require only a fraction of that amount. One may need major capital upgrades within a decade.

The other may operate efficiently for decades with minimal intervention.

Yet both can have the same $/sq.ft.

We Spend More Time in Our Homes Than Our Cars

The irony is that we carefully evaluate fuel economy in vehicles—even though we spend very little time in them. On Prince Edward Island, the average person spends less than 40 minutes per day driving, or under 3% of a 24-hour day. Meanwhile, we spend the majority of our lives in our homes. We sleep there. We work there. We raise families there. We pay utility bills there.

If any asset deserves attention to operating performance, it is the one we occupy most of the time.

The Better Questions

Before asking: “What’s the price per square foot?”

We should also be asking:

• What are the annual utility costs?

• How much energy does this home consume?

• What systems will need replacement in the next 10–20 years?

• What are the expected maintenance costs?

• What is the total cost of building ownership over time?

Because square footage doesn’t determine affordability. Operating costs do.

And just as fuel economy tells you far more about a vehicle than its physical size ever could, a home’s operating performance tells you far more about ownership than its price per square foot ever will.