Your next rental can look reasonable on its own and still put too much pressure on the properties you already own.
That is why I start a portfolio-expansion conversation with the existing buildings. Before asking what you could buy next, I want to understand what your capital and time are already supporting.
I'm Jeremy McGraw, a Windsor-Essex Realtor and active real estate investor. My own experience purchasing, renovating, financing and operating investment property has shaped how I approach growth. A larger portfolio is useful only if you can finance, maintain and manage it through the less convenient periods of ownership.
I help investors assess potential acquisitions in that context. The objective is to make the next purchase fit the portfolio, rather than measure progress solely by the number of units owned.
By Jeremy McGraw, Sales Representative, RE/MAX Capital Diamond Realty Brokerage. Updated November 2, 2026.
Define what the next property needs to improve
Are you looking for more spendable cash flow? A different property type? Less management work per unit? A renovation project that suits your experience? A replacement for a property that no longer fits?
Those are different goals. A building that adds income can also increase debt, deferred maintenance and demands on your time. A property that looks less exciting may fit better if it is easier to operate alongside what you already own.
I want a clear purchase brief before we start comparing listings. That helps us reject properties that add size without addressing your actual objective.
Take a useful snapshot of the existing portfolio
I am not asking for a complete financial plan. I need enough information to understand what the next purchase would change.
| Area | Questions I want answered |
|---|---|
| Operating cash | What remains after realistic expenses and debt payments? |
| Debt | When do mortgages renew, and what obligations support other borrowing? |
| Available cash | What is uncommitted after known expenses and reserves? |
| Building work | Which roofs, systems or units may need substantial spending? |
| Tenancies | Where is income vulnerable to vacancies or collection problems? |
| Management | Who handles the work, and where is capacity already stretched? |
| Ownership structure | What legal and tax questions should be settled before another offer? |
I would not treat every dollar in a bank account as available down-payment money. Some of it may already be needed for a roof, an upcoming tax payment or a period of reduced income.
Your lender and accountant should assess the broader borrowing and financial implications. I use the resulting assumptions to evaluate the property purchase.
Calculate the cash remaining after expansion
Here is a hypothetical example in Canadian dollars. It is not a reserve recommendation.
| Use of available cash | Amount |
|---|---|
| Cash available before the proposed acquisition | $180,000 |
| Planned work on existing properties | −$25,000 |
| Reserve retained for the existing portfolio | −$30,000 |
| New acquisition down payment and closing costs | −$105,000 |
| New property's initial work | −$10,000 |
| Cash remaining for the new property's reserve | $10,000 |
The investor starts with $180,000 but has only $10,000 left for the new property's reserve after those commitments. Whether that is adequate depends on the property's size, condition, debt, expenses and income risks.
Now suppose the initial work costs $15,000 more than expected. The budget would need another source of cash or a change in the plan. A lender's approval would not resolve that operating shortfall.
I want this calculation done before the offer, when you can still change the property, price or timing.
Try it yourself
What's left after the next purchase?
Starts with the hypothetical example above. Add your own commitments, or a cost overrun, to see what remains for the new property's reserve.
- Committed before the reserve
- $170,000
- Left for the new property's reserve
- $10,000
A planning illustration, not a reserve recommendation or financial plan. Whether the remaining amount is enough depends on the property's size, condition, debt, expenses and income risks.
Review combined pressure, not just one property's return
What happens if a vacancy in the new building overlaps with a major repair in an existing one? What if several mortgages renew near the same time? What if one contractor is responsible for work across your portfolio and falls behind?
I do not need to predict the exact event to test whether the portfolio has room to respond. I would compare a supported base case with a lower-income or higher-cost case, then identify the cash required in each.
Borrowed down-payment funds need particular attention. Their payments belong in the overall cash picture, even if the new property's mortgage statement does not show them. My refinancing and BRRRR planning page explains why released equity and ongoing borrowing capacity should be evaluated together.
Choose between another small property and a larger building
Another duplex may fit the way you already operate. A fourplex or small apartment building may consolidate units at one address. A mixed-use property may introduce a different income source and a different set of obligations.
None of those options is automatically the next step.
Larger buildings can bring shared-system costs and more involved financing. Separate buildings can spread some property-specific risks while adding travel and service coordination. Mixed-use acquisitions need commercial-lease and tax review.
I help compare those choices against your objective and the support available to manage them. For a closer look at larger residential acquisitions, see my fourplex and small apartment building page.
Consider whether the best move is a purchase right now
Sometimes preparing an existing unit, fixing an operating problem or completing planned capital work deserves priority over adding another building.
In other cases, a sale may be worth reviewing before a replacement purchase. I would compare the implications with your accountant and mortgage professional rather than assume refinancing or selling is always preferable. A disposal may have tax consequences that materially change the capital available.
My investment-property selling page covers the real estate side of that option.
I am comfortable helping you conclude that the next purchase should wait. That conclusion can be more useful than acquiring a property that leaves no room for ordinary ownership problems.
Questions portfolio owners ask me
How many properties should I own before buying an apartment building?
There is no property-count threshold that establishes readiness. Capital, financing, experience, operating support and the particular building matter more than a sequence of smaller purchases.
Can I use equity from one property to buy another?
Potentially, subject to lender approval and your circumstances. I would examine the cash requirements of both properties and have your accountant review the borrowing plan and records.
Should my next purchase be in a different neighbourhood?
Possibly. It may change some location exposure while increasing operational spread. I would look at why the location suits the proposed rental use and how it affects management.
Can you help compare buying, holding and selling?
Yes, on the property and transaction side. I can help examine acquisition options and market evidence while your accountant, lender and lawyer assess their respective implications.
Work with me on your next acquisition
If you already own rentals and are considering another Windsor-Essex purchase, bring a broad picture of your existing properties, available cash, financing and upcoming work. I can help define what the next acquisition needs to accomplish and assess suitable opportunities against that brief.
This is general real estate acquisition information, not a financial plan or investment recommendation. Reserve needs, borrowing and tax consequences must be assessed for your circumstances.

About the author. Jeremy McGraw has been a Realtor in Windsor-Essex since 2016 and a real estate investor just as long. He has bought, renovated, rented and refinanced investment properties of his own, and works as part of SJ Real Estate at RE/MAX Capital Diamond Realty Brokerage.
Sales Representative, RE/MAX Capital Diamond Realty Brokerage
McGraw Real Estate · Windsor-Essex
519-982-8284 · jeremy@remax519.com
