Ask a landlord what their rentals are worth and you usually get the purchase price, or a number from a listing site, or a shrug. Ask what they own of that, and the answer is usually slower. It is also the more useful number.
Equity is two numbers, subtracted
Real-estate net worth is not complicated:
What the property is worth, minus what you still owe on it.
Do that per property, add them up, and you have your real-estate equity. That is the whole definition. Everything interesting is in how honestly you get each half.
Note what it deliberately excludes. It is not your total net worth. It says nothing about your investments, your savings or your business. It is one asset class, measured properly, and it is the one most landlords have the least visibility into.
Equity grows three ways, and only one of them feels like anything
Principal paydown. Every mortgage payment splits into interest and principal. The interest is the cost of the loan and is gone. The principal is you buying a little more of the building, every month, with your tenant's rent. It is the quietest form of saving there is, and most people never see it because it never appears in a bank balance.
Early in an amortization almost all of the payment is interest, and the principal share grows over time. Two identical payments five years apart do very different amounts of work.
The market. Property values move. This is the part people talk about and the part nobody controls.
Money you put in. A lump-sum prepayment, or a renovation that genuinely raised what the property is worth.
The first one is the interesting one, because it happens whether or not the market cooperates, and it is a straight consequence of somebody else's rent paying down your loan.
The valuation problem, said honestly
"What is it worth" has no free, exact answer. Anyone who tells you otherwise is selling something.
What can be done honestly is an estimate that tells you how it was estimated. One reasonable method, and the one Wealthru uses when there is nothing better available: take what you actually paid, and index it forward using Statistics Canada's New Housing Price Index, published monthly by province and metropolitan area (table 18-10-0205-01).
This is directional, not precise. It is an index of new-house prices, and your particular sixty-year-old duplex is not the index. What it gives you is a defensible answer to "roughly how has this moved since I bought it" without pretending to be an appraisal.
The honest posture, and the one worth demanding of any tool that shows you a number:
- Say which method produced it. An index estimate and an appraisal are not the same thing and should never look the same.
- Let the owner override it. If you have a recent appraisal or a real sale next door, your number is better than any model's.
- Never invent a value you do not have. A property with no purchase price and no valuation should show "no valuation", not a confident zero. A fabricated zero is worse than a blank, because it quietly drags a whole portfolio total down and nothing on screen says why.
What this is good for
Knowing your equity changes specific decisions, not your mood:
- Refinancing. Access usually depends on your equity position, and knowing it before you ask saves a conversation.
- Selling, or not. "What would I actually walk away with" is equity minus selling costs and taxes, not the sale price.
- Whether a rental is working. A property with thin cash flow can still be doing real work through principal paydown. A property with neither is worth a harder look.
The short version
- Equity is value minus what you owe, per property.
- It grows through principal paydown, the market, and money you add.
- Principal paydown is the part your tenant funds and the part nobody sees.
- An honest value estimate names its method and can be overridden.
- A number with no data behind it should be blank, never zero.
These are estimates for planning, not financial advice, and not an appraisal.