The ‘painful’ way your dream home can end up hitting your long-term wealth

Wednesday, 1 April 2026

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The dream house question

It’s a conundrum facing many families looking to enter the property market.

Do you purchase your dream house for a higher mortgage, or do you go for a smaller mortgage in the knowledge that you may one day have to endure the cost of moving somewhere bigger?

Stephanie* is currently in the market, looking to make a purchase, but she doesn’t want to end up with a burden that weighs on her and her young family.

“What’s more beneficial in the long run: a smaller house we may pay off sooner, but won’t have as much capital growth and is not our dream house, or a larger dream house that has a higher mortgage, which means we won’t have extra money to travel and see the world while we’re young?” she asks.

This is fundamentally a question about building long-term wealth, while also meeting more immediate desires aligned with the idea of a life well lived (experiencing travel, entertainment and art).

It’s also about living within your means and not stretching the household budget to the point that your dream house becomes a bricks-and-mortar burden.

Basic maths

Samantha Wilson, an adviser at MortgageLife, tells me that so much of this depends on your age, life stage and what you value.

“Buying something smaller that doesn’t quite tick every box can take the pressure off financially, especially in a rising interest rate environment,” she says.

A smaller mortgage will always give you a bigger buffer in those moments when interest rates start to get a little out of control. You never know when you might have an oil shock, a market crash or a job loss, which will make you happy you have some leeway.

“It can be a safer and more manageable option to start with,” she says.

“However, you may outgrow it sooner, and when it comes time to selling, you may not have as much flexibility if the market isn’t in your favour and if the pressure is there for the next property.”

This is often the challenge with upsizing: the market will ultimately determine if you’re getting a good deal or not. And the pressure of having to buy quickly might mean you don’t consider all the options available, potentially leading to shifting to another house you aren’t entirely enamoured with.

“On the other side, going too big too soon can also have a long-lasting impact,” says Wilson.

“It can leave you feeling like you’re working just to pay the mortgage, with less room for lifestyle, savings or unexpected costs.”

Wilson says most of the first-home buyers she has been speaking to lately are opting for a smaller mortgage because it gives them greater flexibility and the ability to withstand the curveballs that life might throw at them.

Upside and downside

Financial adviser April Hastilow agrees with these advantages of a smaller mortgage, but she warns there are also a few cons to consider.

A smaller house, she explains, can start to grate on owners as lifestyle needs or the family makeup changes.

“I know people paying $80 a week for storage as their home can't fit the items,” says Hastilow.

If you reach this stage and decide you want to upgrade, this could mean extra transaction costs to make this happen.

“People seriously underestimate the costs of staging, marketing, pics, legal fees, agent fees and moving costs,” she says.

You have to ask yourself how many times you actually want to pay for all these things.

Capital growth equation

House prices are a game of percentages, which means the initial value of your house will have a bearing on the dollar figure associated with a pricing increase or decline.

If house prices lift by 10%, you end up with a larger gain if your house is initially worth more. And if you have growth over a number years, then this will compound over time.

But this can also go the other way.

A 10% property decrease on a $2m home can be painful, Hatilow explains, offering a reminder that you need to be willing (and able) to swallow both the ups and downs of the property cycle.

“If the higher mortgage still allows for a reasonable lifestyle, a buffer for rate changes, and some ability to save, the ‘dream home’ can make sense,” she says.

“But if it stretches things to the point where there is no flexibility, no buffer, and noticeable day-to-day stress, the smaller home is often the better long-term decision, even if it feels like a compromise initially. It’s less about maximising the loan, and more about finding a position that is sustainable and still lets people enjoy their lives along the way.”

Finding that balance is never easy when emotions are running high. But getting it wrong can see a dream house quickly turn into a financial nightmare.

*Disclaimer: The information in this article is of a general nature and is not intended to be personalised financial advice. The names of the individuals in this story have been changed to protect their privacy.

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