The Apartment Building You Can’t Afford to Own

There is a simple mistake that investors make when evaluating an apartment building: they focus too heavily on whether they can afford to buy it and not enough on whether they can afford to own it. The distinction matters. A property can appear attractively priced on a per-unit basis, have a reasonable going-in cap rate, and even produce a respectable projected return. Yet the investment can still be fundamentally unattractive if the assumptions required to make the numbers work leave too little room for error. This is particularly relevant in Canadian multifamily today. Higher financing costs, expensive construction, regulatory constraints and more conservative lenders have made the margin between a good investment and a merely plausible one much narrower. The question is no longer simply, “Can we buy this building at the right price?” It is, “What has to go right after we buy it?”

That is a much more demanding question.

The Purchase Price Is Only the Beginning

Consider a hypothetical 40-unit apartment building offered for $6 million. At first glance, the numbers might look reasonable. The price is $150,000 per unit, the building has an existing tenant base, and the current NOI of $330,000 represents a 5.5% going-in cap rate. An investor might reasonably conclude that there is upside. Perhaps rents are below market. Perhaps several units have not been renovated. Perhaps expenses can be reduced. Perhaps the property can eventually support a 5% exit cap rate on a materially higher NOI. None of those observations is necessarily wrong. The problem is that each introduces another assumption.

Suppose the business plan requires $600,000 of renovations. Financing costs another $100,000. The investor therefore has approximately $6.7 million of total project capital invested before considering the cost of carrying the property through the renovation and stabilization period. The investment now depends on increasing NOI from $330,000 to, say, $450,000. At a 5% capitalization rate, that stabilized NOI implies a value of $9 million.

That sounds compelling. The investor has supposedly created $2.3 million of value. But notice what the investment actually requires. The units must be renovated at the anticipated cost. Tenants must turn over at a reasonable rate. New rents must be achievable. Leasing must occur without excessive concessions. Operating expenses must remain under control. The stabilized NOI must actually be sustainable. And, perhaps most importantly, the debt available against the completed property must be sufficient to support the intended refinance. The building was never really a $6 million investment. It was a $6.7 million investment that required a specific sequence of events to occur after closing. That is the number that deserves the most attention.

The Cost of Being Wrong

This is where underwriting discipline becomes particularly important.

Investors often stress-test the purchase price but not the ownership structure. They may ask what happens if rents are 5% below forecast or the exit cap rate is 25 basis points higher. Those are useful tests, but they do not fully capture the risk. The more important question is whether the investment remains viable when several modest disappointments occur simultaneously. Suppose the renovation budget increases by 10%, stabilized rents come in 3% below expectations and the property takes six months longer to stabilize. None of these outcomes would be extraordinary. Yet together they can materially alter the economics. The additional renovation cost reduces equity returns. The slower lease-up increases carrying costs. Lower rents reduce NOI. Lower NOI reduces the stabilized valuation. And a lower valuation may reduce the amount that can be refinanced. This creates an important feedback loop.

An assumption that appears relatively insignificant at the property level can become very significant at the investor level because leverage magnifies the effect. This is also why the phrase “there is plenty of upside” should be treated carefully. Upside is not the same as value creation. A theoretical rent gap has no value until an investor can capture it economically, legally and operationally. A building with $300 of theoretical monthly rent upside per unit is not necessarily a better investment than one with $150 of upside. It depends on the cost of capturing that upside, the time required to do so, the regulatory environment, tenant turnover, renovation costs and the financing consequences.

The cheaper-looking opportunity can easily become the more expensive investment.

Affordability Should Be Measured Through Resilience

The best way to think about affordability in multifamily is therefore not simply the purchase price or even the required equity cheque. It is the amount of financial and operational flexibility that remains after the acquisition.

• Can the property withstand slower rent growth?

• Can it absorb an unexpected capital expenditure?

• Does the debt still work if interest rates remain higher for longer?

• What happens if the refinance valuation is lower than expected?

• Can the investor hold the property for another two years without being forced to sell?

These questions get closer to the real economics of ownership.

This is particularly important for value-add investments. A value-add strategy should not mean that every assumption must be perfectly executed for the investment to succeed. Ideally, the asset should have multiple ways to produce an acceptable outcome. Perhaps rents grow more slowly than expected, but operating improvements still increase NOI. Perhaps the refinance occurs later than anticipated, but the property generates sufficient cash flow to support the additional holding period. Perhaps the market does not compress its cap rate, but the investor can still create value through NOI growth. That is a much stronger investment than one whose success depends on everything happening according to the original spreadsheet. Ultimately, the most dangerous apartment building is not necessarily the one with the highest price. It is the one where the investment case leaves no room for the owner to be wrong.

A good acquisition should survive reasonable mistakes in timing, financing, rents and expenses. The investor should be able to own the building through an unfavourable part of the cycle without being forced into a transaction by the capital structure. The objective is therefore not to find the building with the greatest theoretical upside. It is to find the building where the relationship between price, debt, operations and downside risk gives the investor enough room to execute. That is what makes a property affordable. And in the current Canadian multifamily market, the ability to own an asset through uncertainty may be more valuable than the ability to buy it cheaply.