The "mortgage helper" is practically a Kamloops institution. Drive through almost any neighbourhood and you'll find homes with a separate side entrance leading to a basement suite, quietly helping the owners upstairs offset their mortgage. With a tight rental market and rules that have recently become more suite-friendly, more homeowners than ever are asking the same question: is adding a basement suite actually worth it? Here's an honest look at the costs, the rules, and the payoff.
None of these are dealbreakers, but they're worth thinking through before you commit.
No pressure, just clear, local insight to help you make a confident decision.
1. The Appeal: A Built-In Mortgage Helper
The most obvious draw is income. A legal suite can generate steady monthly rent that goes directly toward your mortgage, property taxes, and utilities. For many buyers, that rental income is the difference between a home feeling like a stretch and feeling comfortable.There's also a financing angle. When you buy a home with a legal suite, many lenders will factor a portion of the expected rental income into what you qualify for, which can meaningfully increase your purchasing power. A mortgage professional can walk you through exactly how that works for your situation, but it's a real advantage in a market like ours.2. Rental Demand Is Strong in Kamloops
A suite is only worth it if you can rent it, and on that front Kamloops is about as favourable as it gets. The city's vacancy rate sits around 1.2%, well below the national average of roughly 3.1%. In plain terms, that means demand for rentals consistently outstrips supply. Thompson Rivers University adds a steady stream of renters to the mix, and larger rental units are genuinely scarce, so a well-finished suite tends to lease quickly. One honest note: demand near campus can shift with student enrolment, and softer international enrolment has recently cooled some of those pockets. But across the city as a whole, the rental market remains tight and competitive for tenants.3. What It Costs to Build
This is where realistic expectations matter. Adding a suite is a significant investment, not a weekend project. Local builders generally estimate that a basement suite in an unfinished basement can run roughly $80,000 to $140,000 or more, while a suite in an already partially finished space can cost less. The final number depends heavily on the existing layout, whether you need to add egress windows, the plumbing and electrical work involved, and your choice of finishes. It's a real upfront cost, but when weighed against years of rental income and the value it adds to the home, many homeowners find the math works in their favour, provided they go in with accurate numbers.4. The Rules Have Actually Gotten Easier
Here's some good news for anyone considering a suite. Provincial legislation that took effect in 2024 now requires most municipalities, including Kamloops, to allow secondary suites on single-family lots as a matter of right. In the past, homeowners often had to go through rezoning, which added time, cost, and uncertainty. Today, if your property is in a residential zone, you generally have the right to add a secondary suite without that hurdle. That said, "allowed" is not the same as "no rules." In Kamloops, a secondary suite is capped at 40% of the home's habitable area, up to roughly 90 square metres, and must be on a single-family lot. It has to be built under a valid building permit and meet the BC Building Code, which covers essentials like egress windows, smoke and carbon monoxide detectors, and fire separation between units. Additional parking is typically required, and a business licence applies in certain situations. Always confirm the current requirements with the City before you plan a project.5. Legal vs Unpermitted: Why It Matters
You'll often see "in-law suites" mentioned in listings. In many cases those are unpermitted, built without a building permit, and that distinction is a big deal. An unpermitted suite can create serious headaches: problems when you try to sell, complications with insurance claims, difficulty renting legally, and real safety concerns if the space wasn't built to code. A legal suite, by contrast, protects both you and your tenant, and it stands out in the rental market. Kamloops even maintains a map of legal suites that renters can check. If you already have an unpermitted suite, there is often a path to legalize it, which can add value and peace of mind.The takeaway is simple: if you're going to add a suite, do it legally. The shortcuts almost always cost more in the long run.6. It Can Boost Your Resale Value
A suite doesn't just pay you while you live there. When it comes time to sell, a legal suite widens your pool of potential buyers considerably. It appeals to first-time buyers who need the income to qualify, to families wanting space for extended relatives, and to investors.Because that income potential is attractive to so many buyers, a legal, well-built suite can command a premium and help your home sell faster. It's one of the few renovations that works for you both during ownership and at the finish line.7. What to Weigh Before You Commit
A suite isn't the right fit for everyone, and it's worth being honest about the trade-offs:- It's a meaningful upfront investment, so financing the build matters
- You'll be a landlord, with the responsibilities that come with it: tenant screening, maintenance calls, and the occasional vacancy
- Sharing your property means less privacy and, often, shared outdoor space or laundry
- It isn't fully passive income, it takes some ongoing time and management
Final Thoughts
So, is a basement suite worth it in Kamloops? For many homeowners, the answer is yes. A tight rental market, strong demand, and rules that have genuinely become more suite-friendly make this one of the better markets in the province for a mortgage helper. The keys are to run your own numbers carefully, build it legally, and go in understanding both the rewards and the responsibilities. Do that, and a suite can be one of the smartest additions you make to your home.Thinking About Buying a Home With a Suite, or Adding One?
Whether you're shopping for a home with income potential or wondering what a suite could do for a property you already own, it helps to understand the local market and the numbers. I'd be happy to help you:- Find homes with legal suites or strong suite potential
- Understand how a suite could affect your budget and buying power
- Weigh whether adding a suite makes sense for your goals
