Rising interest rates and their associated rising cap rates are a serious risk to this business, in my opinion.
I can think of a couple of ways to protect yourself, and a few ways to hedge, some of which I've implemented, but I'd love to hear others' ideas.
1) Longer term mortgages. If interest rates increase cap rates will increase, but a low rate mortgage (especially in assumable friendly Alberta) becomes an offsetting asset, allowing it to be used as a concession on terms to sell a property at a higher rate.
2) Stocks of chartered banks. The banks tend to earn higher net interest margins in a higher rate environment, so as rates rise they should become more profitable, and growing earnings should increase their price/dividends. Not a perfect hedge, but not bad either.
3) Inverse long bond funds. These are investments that are designed to move with interest rates, so if rates go up, they should go up as well. They do this by shorting long term government bonds, and with derivatives. These are very risky, don't use them unless you understand how they work and the risks involved.
4) Owning properties that aren't traditional rentals. I've had some success buying undervalued properties in primarily owner occupied areas. These do not usually trade on cap rate. So although higher rates won't help their value, they're not being purchased normally by the "marginal buyer" so they shouldn't be as affected by rising rates as a pure cap rate property (ie industrial/investment/multifamily/commercial property).
5) Aggressive mortgage paydown/cash. While this isn't a hedge in the strictest sense, as your cash won't get more valuable (unless we hit sustained deflation, which I consider unlikely) it does provide a buffer. A property with 50% equity and high interest rates might provide the same cashflow as the same property with 30% equity and low rates. Cash and equity provide options, and staying power. This doesn't protect from capital losses due to higher cap rates, but can protect the cash flow a successful investor would be using to live.
These are just a few ideas I've come up with over time, and I'd love to hear the thoughts of the community on this. While some might not agree this is the most likely scenario (and it might not be) I doubt anyone would say it's impossible either, which makes it rationale to consider a plan for that scenario.
Regards,
Michael
PS I should add that all of these have costs to them. Fixed rate mortgages cost more than floating most of the time. Bank stock isn't a fast growing investment, inverse long bond funds have huge friction and volatility costs, properties that aren't traditionally rentals are harder to find and can be hard to cashflow, and mortgage paydown/cash are both low yield investments, so more property would yield a higher possible end result. All of these options involve trading upside for downside risk protection.