How to Rebalance Asset Allocation When Real Estate Is 80% of Net Worth

How do you rebalance when your home is 80% of your net worth? Start with what the number means: a Whitby household with an $894,257 house (the town’s July 2026 average, per the Toronto Regional Real Estate Board’s Market Watch) and $225,000 of investments has 80% of its wealth in a single, illiquid, undiversifiable asset — one that just fell 10.2% year-over-year. There are four practical levers: redirect new savings away from the house, downsize, sell and rent, or — cautiously — borrow against the home to invest. For most Ontario homeowners aged 45–60 the right answer is a sequenced combination of the first two over several years, not a dramatic sale. Here’s how we structure it, as a practice licensed on both the real estate and the planning side, with one honest caveat up front: rebalancing out of a principal residence trades tax-free growth for taxable growth, so the reason has to be risk, not return.

The Short Answer: Four Levers Compared

Why 80% Is a Problem — Even for a Great House

Canadians are unusually house-heavy: the principal residence is the largest single asset on family balance sheets in Statistics Canada’s Survey of Financial Security, which put median family net worth at $519,700 in 2023. A principal residence stacks four risks on one asset: it’s a single security (one property, not an index), in a single market (Durham’s average price is down 5.8% year-over-year, per TRREB, with Whitby off 10.2% and Clarington 10.3%), it’s illiquid (27 average days to sell in July’s functioning market — far longer in a frozen one), and it produces no income while consuming property tax, insurance and maintenance.

An 80% position in one stock would get any advisor disciplined; the housing version gets called normal. For clients aged 45–60, the question isn’t whether the house was a good investment — it usually was — but whether the next fifteen years of retirement funding should depend on one address.

Lever 1: Redirect the Cash Flow (Start Here)

The cheapest rebalancing has no transaction costs: stop adding to the overweight asset. Households overweight housing are often still prepaying a 4.09–4.24% mortgage (current best 5-year fixed range, per Ratehub, August 2026) while carrying unused registered room. FP Canada’s 2026 Projection Assumption Guidelines assume 6.3% for Canadian equities and 3.2% for fixed income — and inside a TFSA or RRSP there’s no tax drag on either.

The 2026 room is substantial: $7,000 of new TFSA space (up to $109,000 cumulative since 2009) and an RRSP dollar limit of $33,810, per the Canada Revenue Agency. A couple redirecting $2,000/month from prepayments into registered investments moves roughly $330,000+ onto the financial side of the balance sheet within ten years — our own calculation — often enough to take an 80/20 household to roughly 60/40 without calling a realtor. We covered the prepay-versus-contribute math in our recent article on paying off your mortgage early versus maxing your RRSP/TFSA.

Lever 2: Downsize — The One-Transaction Rebalance

Downsizing converts equity to capital in a single, tax-free step. A concrete 2026 example: sell the average Whitby detached-market home at $894,257 and buy in Port Hope, where Northumberland County averaged $721,450 in July. Our own calculation of the net capital freed:

The entire gain on the Whitby home is tax-free under the principal residence exemption (reported on CRA Schedule 3), and because a PRE-exempt gain isn’t income, it doesn’t touch the Old Age Security clawback, which begins at $95,323 of net income in 2026. Downsizing within Durham — a Bowmanville bungalow, a Pickering or Ajax condo — can free similar amounts; we compared the options in our recent article on condo vs. townhouse vs. bungalow downsizing in Port Hope. The honest caution: transaction costs consume roughly a third of the gross spread, so downsizing makes sense as a life decision that also rebalances — not as a pure portfolio trade.

Lever 3: Sell and Rent — The Full Rebalance

For some households — often retirees in Port Hope and east Durham — selling entirely and renting is the cleanest answer: all equity becomes income-producing capital, tax-free, and the landlord inherits the maintenance. The trade-offs are real: rent rises indefinitely, and Ontario’s rental supply is thin in smaller markets. We ran the full ownership-versus-rent arithmetic in our article on calculating total cost of ownership vs. renting and investing in Durham Region; for house-rich, income-poor retirees, the sell-and-invest version of that math is frequently the strongest of all four levers.

Lever 4: Borrow to Invest — Handle With Care

The advertised shortcut is to leave the house alone and invest borrowed money against it — a HELOC, or the readvanceable-mortgage strategy known as the Smith Manoeuvre. Interest on money borrowed to earn investment income is generally deductible under CRA’s Income Tax Folio S3-F6-C1, and big-bank HELOCs currently price around 4.95% (prime 4.45% + 0.50%).

But look at the 2026 spread honestly: 4.95% borrowing cost against FP Canada’s 6.3% equity assumption leaves about 1.35 points before fees — thin compensation for adding leverage to a balance sheet that is already 80% one asset. Deductibility depends on meticulous tracing of borrowed funds, and the strategy amplifies exactly what you’re trying to protect against: falling asset prices with debt attached. We implement it rarely, for high-income clients with secure cash flow and existing diversification — as a supplement to Levers 1 and 2, never a substitute.

What’s the Right Target Allocation?

There’s no universal number, but a serviceable test for clients within fifteen years of retirement: could you fund your essential retirement spending without selling the house on a deadline? As a rule of thumb — ours, not a guarantee — $300,000 of financial assets supports roughly $12,000/year of withdrawals at a conservative 4% initial rate. If your plan needs more than that and the house is the only source, the allocation is the plan’s biggest risk.

Frequently Asked Questions

Is it bad to have most of my net worth in my house? It’s a concentration risk: one illiquid asset in one local market, producing no income. Durham prices fell 5.8% year-over-year to July 2026, per TRREB — exactly the kind of drawdown diversification exists to absorb.

How can I diversify away from my home without selling it? Redirect new savings: pause mortgage prepayments and fill your TFSA ($7,000 for 2026) and RRSP (up to $33,810). Done consistently, this shifts your allocation meaningfully within five to ten years at zero transaction cost.

Is downsizing worth it financially in Durham Region? Moving from the Whitby average ($894,257) to the Northumberland/Port Hope average ($721,450) frees roughly $107,000 after commissions, land transfer tax and moving costs — tax-free under the principal residence exemption — our own calculation from TRREB July 2026 figures.

Is the Smith Manoeuvre a good way to rebalance? Rarely, in our view. Interest deductibility is legitimate under CRA Folio S3-F6-C1, but at a ~4.95% HELOC rate against a 6.3% expected equity return, the margin is thin — and it adds leverage to an already concentrated balance sheet. It suits high, stable incomes with diversification already in place.

Does selling my home affect my OAS? Generally no. A gain fully sheltered by the principal residence exemption isn’t taxable income, so it doesn’t count toward the OAS recovery threshold ($95,323 in 2026) — though investment income on the proceeds afterward does.

One Balance Sheet, Both Kinds of Assets

Rebalancing out of real estate sits exactly on the seam between a realtor’s job and a financial planner’s job — which is why it’s so often done badly, or not at all. Our practice is licensed on both sides, so we can model your house, your mortgage, your registered room and your retirement income in one projection, and sequence the levers in the order that costs you the least.

Book a complimentary consultation through TheHarmerGroup.ca or HarmerWealth.com and we’ll look at the whole balance sheet together.

Chad Harmer, PFP, CIM, FCSI, MBA, Realtor — The Harmer Group, Royal Heritage Realty Ltd. & Harmer Wealth Management Corp.

This article is for general information only and does not constitute personalized investment, tax, mortgage, real estate, or legal advice. Figures are current as of September 2026 and will change; projected returns are planning assumptions rather than guarantees, market values fluctuate, borrowing to invest magnifies both gains and losses, and interest deductibility and principal residence exemption treatment depend on your specific facts. Mutual funds are offered through Investia Financial Services Inc. Please consult a licensed professional about your specific situation.