A key principle of "old wealth" is using debt with an interest rate below market returns to grow money exponentially. Conversely, "new wealth" challenges traditional wisdom by recognizing that in many markets, renting and investing a down payment can yield higher returns than home ownership.

The idea that homeownership is the only path to wealth is outdated. Using the '5% rule' to calculate unrecoverable costs (taxes, maintenance, opportunity cost), renting can be more profitable if you are disciplined enough to invest the savings in the stock market.

To quickly compare, multiply a home's price by 5% and divide by 12. If you can rent an equivalent home for that monthly amount or less, renting is likely the better financial choice due to owning's significant unrecoverable costs.

The trope that renting is 'throwing away money' is flawed. Rent is a payment for valuable, non-financial assets like location flexibility, freedom from ownership costs (taxes, repairs), and the option to invest capital elsewhere—potentially in higher-return, more diversified assets like the stock market.

Oppenheim argues that financially, renting is often smarter than buying. He states 90% of his clients would have been better off renting for the past decade, avoiding taxes, commissions, and maintenance costs in a flat market, while gaining valuable mobility.

For those who can afford a down payment but not the monthly mortgage, Emma Hernan suggests a "buy and rent" strategy. Purchase the property, place a tenant in it to cover the mortgage payments, and build equity. You can then move in years later when your financial situation improves.

The "renting is throwing money away" argument ignores opportunity cost. When renting is cheaper than a mortgage, the difference can be invested in higher-yield assets like stocks, historically outperforming home equity and creating more wealth over the long term.

The idea that renting is "throwing money away" is flawed. Rent is payment for a service that provides shelter, flexibility, and insulation from the risks and hidden costs of homeownership like surprise repairs, property taxes, and maintenance. This "optionality" is a powerful, though non-tangible, financial asset.

The primary obstacles to homeownership—high prices, large down payments, and expensive mortgages—are inadvertently fueling a boom for the single-family rental market. As millennials are priced out of buying, they become long-term renters, creating sustained demand for institutional landlords.