Homeowners check this figure for a lot of reasons. Maybe you're weighing a move-up purchase, thinking about downsizing, considering a renovation, or just tracking your household's net worth. Others want to know what borrowing options might be realistic.
This guide walks through five steps: estimating your home's current market value, confirming every dollar of outstanding home-secured debt, subtracting debt from value, calculating your equity percentage, and understanding why that number won't match your eventual sale proceeds or borrowing limit.
Key Takeaways
- Home equity equals current market value minus all debt secured by the property
- Use current principal balances, not original loan amounts or monthly payments
- Online estimates work for planning; a CMA or appraisal fits higher-stakes decisions
- Equity percentage and loan-to-value (LTV) measure different things
- Closing costs, taxes, and liens reduce actual sale proceeds below your equity figure
What You Need to Check for Home Equity
Getting an accurate number comes down to two inputs: your home's current market value and the total debt secured against it. Before you start pulling numbers, decide why you're checking. A rough planning estimate, a likely sale-price range, and a formal lender valuation each call for a different method.
What to Gather
Gather these before running any calculation:
- Recent comparable sale prices in your neighborhood
- One or more online valuation estimates
- Your latest mortgage statement or servicer portal balance
- Second-lien or home equity loan statements, if applicable
- Current HELOC balance (only the amount actually drawn)
- Records of any other liens against the property
Three formulas drive everything in this guide:
- Home equity = current market value − total secured debt
- Equity percentage = home equity ÷ current market value × 100
- LTV = mortgage debt ÷ current market value × 100
Why Fresh Numbers Matter
Valuation date matters. A price estimate from eighteen months ago won't reflect today's market, so pull figures that match your home's current condition, size, and recent comparable sales.
In Sanborn, NY, for example, the median home sale price climbed to $320,000, up from $267,500 just six months earlier. That kind of swing shows why stale numbers can throw off your whole calculation.
On the debt side, use your current principal balance, not the original loan amount or your monthly payment. If you have a HELOC, only count what you've actually drawn, not your full credit limit.
Methods to Check Home Equity
You can check home equity three ways, each suited to a different need: a quick self-check using records you already have, a market-based estimate using comparable sales or a REALTOR®'s comparative market analysis, and a formal appraisal when you need an independent, defensible number.
Method 1: Use an Online Estimate and Mortgage Records
Automated valuation tools and public property records give you a fast starting point. They won't fully account for your kitchen remodel, a finished basement, or a sale that closed last week down the street.
Tools needed: One or two reputable valuation sites, your latest mortgage statement, and balances for any second mortgage or drawn HELOC amount.
Steps:
- Record each online value estimate and its date; if you check more than one tool, note the range rather than trusting a single number
- Add up the current principal balances of every loan secured by the property
- Subtract total debt from the estimated value, then divide by that value for your equity percentage
Zillow's own data shows why a range matters more than a single figure. The company reported a 1.8% median error for homes currently listed for sale, but that error jumped to 7.2% for off-market homes in its 2025 report, according to Zillow's annual report.
This method is free and quick for personal tracking, but it's not reliable enough for pricing a listing, settling an estate, or applying for a loan.
Method 2: Compare Recent Sales or Request a CMA
Recently sold comparable homes give you a more locally grounded number than an algorithm. The idea is to match location, size, condition, and features as closely as possible, then adjust for the differences.
What you'll need: Recent comparable sales, your own property details, renovation and repair records, and local market context. A local REALTOR® can prepare a comparative market analysis combining market knowledge with available sales data.
Steps:
- Identify genuinely comparable homes sold recently, prioritizing similarity over highest price
- Adjust for differences like an updated kitchen, a finished basement, deferred maintenance, or lot size
- Use the resulting value range alongside your current debt to estimate equity, noting assumptions that could shift the result
This approach reflects actual local buyer demand better than an automated estimate, though it's still an estimate, not a lender-ordered appraisal.
The Carol Klein - Century 21 Northeast team offers a free Home Valuation & Market Analysis for homeowners across Western New York, including Buffalo, Amherst, Clarence, and surrounding communities. Use it if you're weighing a sale, a downsizing move, or just want a current equity check before your next step.
Method 3: Get a Professional Appraisal
A licensed appraiser inspects the property and backs up their opinion of value with comparable sales, property characteristics, and market evidence.
Steps:
- Confirm why you need the appraisal and whether a lender, court, or estate administrator requires a specific appraiser or report format
- Prepare records on improvements, permits, maintenance, and known defects, without assuming every project returns its full cost
- Subtract current secured debt from the appraised value, and review the report's assumptions, effective date, and comparable sales
Appraisals are more formal and defensible than a personal estimate, but they cost money and reflect one specific date. Bankrate, citing 2025 data, puts the average single-family appraisal fee at $357, with a typical range of $314 to $423, according to Bankrate's 2025 research. Even a formal appraisal can differ from your eventual sale price or from a second appraisal.
How to Interpret the Results
Your calculated equity is a snapshot, not a guaranteed amount of cash or borrowing power. Read it alongside your equity percentage, LTV, and current market direction.
Positive equity means your estimated market value exceeds total secured debt. Report both the dollar figure and the percentage. A stronger equity position generally gives you more flexibility when selling or financing.
A thin equity cushion is sensitive to small valuation swings, selling costs, or market softening. Use a value range instead of one exact number, and avoid decisions that depend on the most optimistic estimate panning out.
Negative equity means you owe more than the home may currently be worth. If you land here:
- Confirm all balances directly with your servicer
- Get a more reliable valuation before making any decisions
- Review your payment obligations
- Seek qualified financial or housing guidance before selling or borrowing
Equity vs. Usable Equity
Gross equity isn't the same as what a lender will let you borrow. Usable or borrowable equity depends on a lender's maximum LTV or combined LTV limits, your credit, income, and debt-to-income ratio.
Bankrate notes that lenders commonly want 20%, sometimes 15%, equity remaining, which translates to roughly an 80-85% maximum combined LTV in many cases, according to Bankrate's lending guide. That's a general reference point, not a universal rule, so check current terms with your lender.
Estimated Sale Proceeds
To estimate net sale proceeds, subtract selling costs from your expected sale price:
- Agent compensation
- Transfer taxes, where applicable
- Seller concessions
- Repair costs
- Mortgage payoff amount (not your current balance)
- Liens and closing charges
Common Errors in Checking Home Equity
Most mistakes come from using the wrong value or the wrong debt figure, which skews the result high or low.
- Using an outdated or inappropriate value. Your original purchase price, tax assessment, or a stale online estimate doesn't reflect current buyer demand or your home's actual condition.
- Missing secured debt. Subtracting only the first mortgage while ignoring a second mortgage, home equity loan, drawn HELOC, or judgment lien.
- Confusing payment types. A monthly payment or payoff quote is not the same as your principal balance; a formal payoff figure may include accrued interest and fees.
- Overestimating renovation value. Assuming a remodel adds dollar-for-dollar value, or comparing against incomparable high-priced sales while overlooking deferred maintenance.
- Treating equity as guaranteed cash. Estimated equity isn't guaranteed loan approval or sale profit once you factor in transaction costs, market movement, and underwriting.
Safety and Best Practices
A few precautions keep your equity check accurate and your information secure:
- Protect personal data on valuation websites; never share mortgage statements, account numbers, or Social Security numbers with unverified services
- Confirm current balances directly through your mortgage servicer and check official property records for additional liens
- Use a conservative value range and get a proper professional valuation before listing, settling an estate, or applying for a secured loan
- Remember that home-secured borrowing isn't risk-free; it raises your monthly obligations and puts the property at risk if payments lapse
- Research current rates, fees, and lender limits from authoritative sources rather than relying on a generic calculator for a personal decision
Conclusion
Checking your home equity comes down to three things: a current market-value estimate, complete home-secured debt information, and one formula: value minus debt equals estimated equity.
Which method fits best depends on your goal:
- Online tools work for a rough check
- Comparable sales or a CMA add market context
- An appraisal gives you a formal, defensible number
If you're considering a sale, a downsizing move, or a move-up purchase in Western New York, a current market analysis can clarify timing, pricing, and likely net proceeds. The Carol Klein team works with homeowners across Buffalo, East Aurora, Orchard Park, and the surrounding communities on exactly these conversations.
Frequently Asked Questions
How do I calculate my home equity value?
Subtract the total balances of all loans secured by your home from its current market value. You can estimate that value online, through comparable sales or a CMA, or confirm it with a professional appraisal.
How much would a $100,000 HELOC cost per month?
The payment depends on your interest rate, how much you've actually drawn, the repayment structure, and whether you're in the draw or repayment period. Use a current lender quote or calculator rather than a generic figure.
How do I tell if I have 20% equity in my home?
Divide your estimated equity by your home's current market value and multiply by 100. Having 20% equity means your mortgage debt is roughly 80% of current value, before factoring in other liens.
What is the cheapest way to get equity out of a house?
There's no universally cheapest option since rates, fees, and terms vary by lender and loan type. A HELOC, home equity loan, cash-out refinance, and selling each carry different costs and repayment risks worth comparing carefully.
What is considered a good amount of equity in a home?
There's no single ideal amount since goals and markets differ. Most homeowners benefit from a meaningful cushion that accounts for selling costs, possible market declines, and any borrowing they plan to do later.
