Equity is the share of a property’s value that is truly yours. You calculate it by subtracting the outstanding loan balance from the property’s market value: a home worth $400,000 with a $250,000 mortgage carries $150,000 of equity.
Equity grows two ways: as you pay down loan principal through amortization, and as the property appreciates. You can put it to work by selling, refinancing, or borrowing against it, though tapping equity adds debt and risk. It’s effectively the mirror image of your loan-to-value ratio — as one falls, the other rises.
Gross equity is a snapshot, not spendable cash
If a property is reasonably valued at $425,000, the first mortgage is $275,000, and a second lien is $25,000, gross equity is $125,000. The result changes with the valuation date, property condition, and every secured balance. An online estimate, tax assessment, appraisal, broker opinion, and actual sale price can each answer a different question.
Accessible or net sale equity is smaller than gross equity. A lender may apply combined loan-to-value limits and underwriting before permitting a new loan; a sale also has brokerage, transfer, legal, payoff, tax, repair, and closing costs. Do not put the full $125,000 into an acquisition budget as if it were cash in a bank account.
•
Date the value source and record all liens and payoff amounts.
•
Model sale costs separately from refinance borrowing limits.
•
Stress-test a lower value and higher transaction cost before relying on proceeds.
How landlord equity changes
Scheduled principal paydown can increase equity even if value is unchanged. Market appreciation or improvements can raise value, while depreciation in the everyday market sense, property damage, added debt, or unpaid secured charges can reduce it. Renovation spending does not guarantee a dollar-for-dollar value increase.
Use equity to understand leverage, refinance room, and a possible exit, but pair it with cash flow. A high-equity property can still have weak liquidity or negative operations, and borrowing against it converts ownership value into a secured repayment obligation.
Related tools & guides
Editorial ownership
Written and maintained by the Aptoria editorial team
Editorial method reviewed July 28, 2026. Aptoria reviews scope, source fit, examples, limitations, links, and publication gates. This record does not claim attorney, CPA, lender, appraiser, or other independent professional sign-off.
Primary and authoritative sources
Related terms
Investing metrics
Appreciation
The increase in a property's market value over time — one of the main ways real estate builds wealth alongside rental income.
Investing metrics
Amortization
The schedule by which a loan is paid off over time, with each payment split between interest and principal.
Investing metrics
LTV (loan-to-value ratio)
The loan amount as a percentage of a property's value — a core measure of leverage and lender risk.
From definition to done
Aptoria runs the routine work behind these terms — rent, books, and screening — inside limits you set. Free for your first unit.
Start free