# How Much Is My House Worth?
By Opendoor Editorial Team | 2019-01-28
> Knowing how to calculate your home’s value makes is essential for selling your property successfully. Our guide will help you to determine how much your house is worth.
## Key Takeaways
#### Key Takeaways
- **Home value is a price range, not a single number.** The same property can have three legitimate values — assessed (for tax), appraised (for lender), and market value (what a willing buyer would pay today) — and they routinely differ by 10% or more.
- **Market value is set by recent comparable sales**, typically within a one-mile radius, with similar size, age, and condition, sold in the past three to six months — the same method professional appraisers and Opendoor use.
- **Automated estimators are starting points, not final answers.** Public AVMs (public AVM estimate, another public AVM estimate, Realtor.com My Home) carry median error rates in the **2% to 7%** range, with wider error in low-volume or unique markets. Use them as a sanity check, then refine with comps and condition.
- **Three on-page steps to a defensible value:** pull 3 to 6 comparable sales, adjust for square footage, condition, and upgrades, then cross-check against an [Opendoor cash offer](https://help.opendoor.com/selling/how-it-works/how-selling-to-opendoor-works) or licensed appraisal.
- **Condition and timing matter as much as the comps.** Online estimates don't account for home condition — a roof, kitchen, or HVAC update can swing a real-world offer by tens of thousands.
Whether you're thinking about selling, refinancing, or simply curious about your biggest investment, knowing what your home is worth right now gives you the power to make confident decisions. Market value shifts constantly—driven by buyer demand, interest rates, and what's happening in your neighborhood this month.
This guide walks you through free online estimators, manual valuation methods, 2025 market trends, and when to get a professional appraisal or instant cash offer.
## **What is my house worth today?**
Your home's worth—often called market value—is the price a qualified buyer would pay right now. It reflects what similar homes are selling for in your area, adjusted for your property's[ specific features and condition](https://www.opendoor.com/articles/factors-that-influence-home-value).
Most homeowners look up their home's value for one of four reasons: pricing a listing, exploring a refinance, tapping into equity, or simply tracking their investment. Market value isn't a fixed number. It shifts with buyer activity, mortgage rates, inventory, and what's happening in your neighborhood this month.
## Market value vs. appraised value vs. assessed value
When sellers ask **'what is my house worth,'** they're usually thinking about one number — but in practice, every home has **three legitimate values** that serve different purposes. Mixing them up is one of the most common reasons sellers misprice a listing or buyers get caught off guard at closing.
- **Market value** is what a willing, informed buyer would pay a willing, informed seller in an open-market transaction today. This is the number you list at and the number a buyer offers against. It's set by **recent comparable sales** in the same neighborhood, adjusted for condition, size, and features. For a deeper breakdown of how to pin it down, see our [complete guide to fair market value](https://www.opendoor.com/articles/fair-market-value-of-a-home-what-it-means-and-how-to-find-it).
- **Appraised value** is a licensed third-party opinion of market value, ordered by a lender to make sure they're not loaning more than the home is worth. It uses the same comparable-sales method but follows federal lender rules. See our [home appraisal guide](https://www.opendoor.com/articles/home-appraisal-guide-what-it-is-how-long-it-takes-what-to-expect) for what the appraiser actually looks at.
- **Assessed value** is the number your county assigns for **property tax** purposes. It's usually a fraction of market value (every state uses a different assessment ratio) and updates on a tax-cycle schedule — not when the market moves. Don't use it to price a listing.
A fourth concept worth knowing: an **Opendoor cash offer** is a real, binding-when-signed price based on the same comp-and-condition analysis, factoring in service charge, repairs, and carrying costs. [Opendoor's offer process combines technology with human expertise](https://help.opendoor.com/selling/understanding-your-offer/how-offer-price-determined), and unlike a free estimator, it accounts for the actual condition of your home.
## **Free home value estimator options**
Automated valuation models, or AVMs, pull data from public records, recent sales, and market trends to estimate your home's value in seconds. You can check multiple platforms for free and see where the numbers cluster. No single estimate tells the whole story, but together they give you a reliable range.
### **Zillow Zestimate**
Zillow's algorithm looks at public records, MLS data where available, and recent nearby sales to produce an estimate for most U.S. homes with a[ 3.2% median error rate](https://www.zillow.com/how-much-is-my-home-worth/) for on-market properties. The platform updates as new information comes in, so you're seeing real-time shifts across a wide coverage area.
### **Realtor.com My Home**
Realtor.com's RealValue tool tracks your home's estimated worth over time using market data and comparable sales. You can see how your value has moved as local conditions change, and the platform surfaces recent sales in your neighborhood for context.
### **Redfin Estimate**
Redfin's model combines automated data analysis with inputs shaped by local market expertise. Where Redfin has strong agent presence and data access, the estimates reflect localized pricing nuances. The tool also shows you nearby comps and lets you update property details to refine accuracy.
[Get your offer](#)
Related: [how to find value of home](https://www.opendoor.com/articles/how-much-is-my-house-worth-7-ways-to-find-out-your-homes-value) · [the market value of my home explained](https://www.opendoor.com/articles/whats-your-home-worth-take-these-steps-to-find-out).
## **How online home value calculators work**
Property value estimators use algorithms to synthesize large datasets and predict what buyers might pay today. The data comes from public records, MLS feeds where available, and neighborhood-level market trends.
Most calculators weigh three core inputs:
**Recent sales:** Comparable properties sold nearby within the last three to six months **Property details:** Square footage, lot size, bedrooms, bathrooms, condition, age **Market conditions:** Local supply and demand, days on market, seasonal trends
Algorithms weigh the factors differently depending on the model. Some prioritize recent sales heavily, while others factor in tax assessments or user-submitted updates. That's why you might see a range of values across platforms—no two estimators use identical formulas.
## How accurate are online home value estimators, really?
Public estimators have come a long way, but they're still **statistical models** — not appraisals. The honest answer to 'how accurate is my home value estimate' is: **accurate enough for a starting point, not accurate enough to set a list price**.
A few things to know before you trust any single number:
- **Median error rates land in the 2% to 7% range** for on-market homes in high-data metros, and **rise into the double digits** for off-market, rural, or unique properties. On a $400,000 home, a 5% error is $20,000 — enough to change your equity, your offer strategy, and your loan options.
- **Estimators don't see condition.** Two homes with identical square footage and bedroom counts can be $50,000 apart based on a renovated kitchen, a new roof, or deferred maintenance the model can't see. The Opendoor Help Center is explicit that [online estimates do not account for home condition or binding purchase commitment](https://help.opendoor.com/selling/understanding-your-offer/how-offer-price-determined).
- **They lag the market.** Most AVMs update on a weekly or monthly cadence using closed sales — so in a rising or falling market, you're seeing where the market \*was\*, not where it \*is\* today.
- **They blend public records.** A wrong bedroom count in the county records, a misclassified lot size, or a missed addition can throw the estimate off by 10% or more.
The right way to use them: pull **two or three** estimators (a public AVM estimate, a another public AVM estimate, and the Opendoor offer tool), look at the **range** rather than the midpoint, then refine by running your own comps. If the spread is tight, you've got a defensible value band. If the spread is wide, it's a signal to involve a licensed appraiser or get a cash offer that's grounded in your home's actual condition.
## **Step-by-step method to calculate your home worth**
Here's a practical way to approximate market value using the same principles professionals use. You'll gather data, adjust for differences, and cross-check your result against online estimates.
### **1. Gather recent comparable sales**
Start by identifying[ "comps"—homes similar to yours](https://www.opendoor.com/articles/home-sellers-why-you-should-care-about-comps) in size, style, age, and condition that sold within the last six months in your neighborhood or school zone. Prioritize properties within a close radius and similar lot type, like corner versus interior or busy road versus quiet street. You can find comps through public records, real estate websites, or by asking a local agent.
### **2. Adjust for square footage and upgrades**
Note the differences between your home and each comp. If a comp is 200 square feet larger, subtract an estimated value for the extra space based on the comp's price per square foot. Then add or subtract for bedrooms, bathrooms, garage spaces, lot advantages, and updates like remodeled kitchens or new roofs. Be conservative—minor upgrades rarely recoup dollar-for-dollar at sale.
### **3. Weigh local market conditions**
If inventory is tight and buyer demand is strong, lean toward the higher end of your adjusted comp range. In softer markets with longer days on market, price toward the lower to mid-range. Check recent listing activity and sold-to-list price ratios to gauge momentum.
### **4. Calculate price per square foot**
Divide each comp's sale price by its living area to find price per square foot. Apply a realistic range to your home's square footage. Keep in mind that floorplan quality, condition, and lot attributes can make similar-sized homes trade at different prices—this metric is a blunt tool.
### **5. Double-check with an online estimate**
Run your address through several AVMs. If your manual calculation aligns with a tight cluster of estimates, you're likely close. Large gaps suggest your home may have unique features or the market is shifting quickly, which means professional guidance might help.
## How to determine your home's market value in 5 steps
If you want a defensible value you could hand to a lender, an agent, or a cash buyer without flinching, work through these five steps in order. This is the same comp-and-adjust method appraisers use — just compressed into a homeowner-friendly workflow. For a side-by-side of every method, our sister article on [how to find value of home](https://www.opendoor.com/articles/how-much-is-my-house-worth-7-ways-to-find-out-your-homes-value) walks through all seven popular approaches.
1. **Pull 3 to 6 comparable sales** in the past 3 to 6 months, within a one-mile radius (tighter in dense urban areas, wider in rural). Match on bedrooms, bathrooms, square footage (±15%), and lot size. Skip distressed sales, REO sales, and obvious teardowns.
2. **Calculate price per square foot** for each comp. Take the median, not the average, so one outlier doesn't skew the result.
3. **Adjust each comp** up or down for differences from your home: add for finished basements, renovated kitchens, newer roofs, and extra bathrooms; subtract for smaller lots, older systems, or busy-street locations.
4. **Sanity-check against three AVMs** — public AVM estimate, another public AVM estimate, and the Opendoor offer tool. If your comp-derived number falls inside the AVM band, you have a defensible range. If it's outside, your comps may be off or your home has condition factors the AVMs aren't seeing.
5. **Validate with a real offer or appraisal.** A cash offer (no obligation) or a pre-listing appraisal converts your range into a single, defensible number. The fastest path is to [request a free Opendoor cash offer](https://help.opendoor.com/selling/getting-your-offer/how-to-request-cash-offer), which is grounded in comparable sales transactions from the past few months.
A realistic time budget: 30 minutes to pull and adjust comps, 5 minutes to cross-check AVMs, plus the lead time for an offer or appraisal if you want a single number.
## **Market trends shaping home prices**
Home values this year are influenced by[ broad forces](https://www.opendoor.com/articles/understanding-fundamentals-of-real-estate-market) that play out differently by location and price tier. Here's what's moving the needle.
### **Demographic shifts**
Migration between urban cores and suburbs continues to reshape demand. Areas attracting families, remote workers, or retirees may see stronger price resilience, while neighborhoods losing population can experience softer pricing. Watch for new employer announcements, school district changes, or infrastructure projects that signal future demand.
### **Interest rate outlook**
Mortgage affordability influences buyer purchasing power. When rates ease, more buyers can qualify and prices hold steady or rise. When rates climb or stay elevated, buyers adjust budgets and upward price pressure softens, with rates forecast to[ decline to 6.4%](https://money.usnews.com/loans/mortgages/mortgage-rate-forecast) throughout 2025. Even a half-point rate move can shift what buyers can afford by tens of thousands of dollars.
### **Inventory levels**
Low inventory typically supports higher prices and faster sales. Growing inventory gives buyers more leverage, leading to longer listing times and more price sensitivity, with[ 33% more homes](https://www.housingwire.com/articles/inventory-back-to-2019-levels-and-what-that-means-for-2025/) on the market now than last year. Track how many months of supply your local market holds—less than three months signals a[ seller's market, while more than six months favors buyers](https://www.opendoor.com/articles/buyers-vs-sellers-market-how-to-use-the-current-market-to-your-advantage).
### **Regional migration**
Remote and hybrid work patterns, lifestyle preferences, and cost-of-living differences continue to shift demand across regions. Markets offering value, amenities, and job access can attract inflows that bolster prices. Conversely, high-cost metros losing residents may see price moderation or declines.
[Get your offer](#)
## The factors that actually move home value
When people ask **'what determines the value of my home,'** the answer falls into four buckets — and roughly in this order of impact for a typical single-family home:
- **Location.** School district, walkability, commute time, crime rate, and neighborhood trajectory account for the largest share of value variance between otherwise-identical homes. You can renovate a kitchen; you can't move a house.
- **Size and layout.** Gross living area (GLA) and bedroom/bathroom count are the biggest \*physical\* drivers. A finished basement counts in some markets and not others. A garage matters more in cold metros than in mild ones.
- **Condition and recent improvements.** A new roof, updated HVAC, modern kitchen, and refinished floors all show up in appraisals and in buyer offers. Deferred maintenance — original roof, dated electrical, a 25-year-old water heater — shows up as deductions or as a price-reduction request after inspection. The Opendoor assessment captures the [actual condition: flooring, roof, appliances, paint, landscaping](https://help.opendoor.com/selling/understanding-your-offer/offer-changed) before the final cash offer is locked.
- **Market conditions.** Mortgage rates, local inventory, and seasonality (spring is usually the strongest selling window in most metros) can swing prices 3% to 10% within a single year, even when nothing about your home changes. For a deeper dive, see our breakdown of [what really determines property value](https://www.opendoor.com/articles/factors-that-influence-home-value).
A practical tip: when you're estimating value, don't try to price every factor in isolation. Use comps that already control for **location and size**, then adjust only for **condition and major features**. That's how appraisers do it — and it keeps the math from spiraling.
## **How accurate are online property value estimates?**
Online estimates work best as a quick starting point, not a final sale price. Accuracy can be impacted by unique features, recent renovations not reflected in public data, unusual lots, or fast-changing market conditions.
Here's how different valuation methods compare:
**Online calculator:** Quick ballpark figure; may miss unique features and recent updates. **Real estate agent:** Local market expertise, on-the-ground comps, pricing strategy; takes more time to schedule. **Professional appraisal:** Formal, detailed valuation often required for loans; typically the most expensive
**Cash offer:** Immediate selling decision with certainty on timing; reflects a quick-sale value rather than top-of-market list price
If you're preparing to sell, combining an online estimate with agent insight gives you the most complete picture. If you're refinancing or settling an estate, an appraisal may be required.
## **Improvements that boost the value of my home**
Focus on broadly appealing,[ cost-effective updates](https://www.opendoor.com/articles/improvements-that-increase-home-value) that show well in photos and during showings. Not every improvement adds dollar-for-dollar value, so prioritize projects with high return potential.
### **Curb appeal upgrades**
Fresh landscaping, trimmed shrubs, mulch,[ exterior touch-up paint](https://www.opendoor.com/articles/paint-colors-that-boost-home-value), and a standout front door elevate first impressions and signal a well-cared-for home. Buyers form opinions within seconds of arrival, so curb appeal sets the tone for the entire showing.
### **Energy efficiency additions**
Weatherization, smart thermostats, LED lighting, and efficient appliances appeal to buyers seeking lower utility costs and reduced environmental impact. The upgrades often pay for themselves over time and can differentiate your home in competitive markets.
### **Minor kitchen refresh**
New cabinet hardware, updated lighting, fresh paint, faucet replacements, and resurfaced or painted cabinets can modernize the space without a full remodel, delivering a[ 96% ROI](https://www.21oak.com/home-maintenance/home-remodeling-projects-with-high-roi-2024/). Kitchens drive buyer decisions, but you don't need a $50,000 renovation to make an impact.
### **Decluttering and staging**
Deep cleaning, decluttering, neutral décor, and strategic staging improve perceived space and help buyers visualize themselves living there. Even small changes like removing personal photos and rearranging furniture can make rooms feel larger and more inviting.
## **When to get a professional appraisal or cash offer**
Consider a professional appraisal for refinancing, estate planning, divorce, or when you need a documented value. Appraisers provide an unbiased, formal assessment based on in-person inspection and comparable sales analysis. Lenders typically require appraisals for mortgage transactions to verify collateral value.
If you're preparing to sell and want certainty and speed—especially if you're coordinating a purchase or relocation—a cash offer can simplify timing, reduce contingencies, and eliminate showings.[ Get an instant cash offer from Opendoor](https://www.opendoor.com/address-entry) to see what your home could sell for today, with flexible close timelines and transparent pricing.
## When a free estimate is enough — and when you need a professional
Free home value estimators are perfect for some decisions and dangerously imprecise for others. Here's how to pick the right tool for the question you're actually trying to answer.
**A free AVM is enough when you're:**
- Tracking your equity over time for personal net-worth planning.
- Deciding \*whether\* to think about selling in the next 6 to 12 months.
- Comparing two or three target neighborhoods at a high level.
- Estimating a refinance break-even point.
**A licensed appraisal or cash offer is the right call when you're:**
- Listing the home in the next 30 to 60 days and need a defensible list price.
- Settling a divorce, estate, or partnership buyout where the value is legally consequential.
- Removing private mortgage insurance (PMI) on an existing loan.
- Disputing a tax assessment.
- Buying out a co-owner or refinancing into a cash-out loan.
For sellers, the fastest middle ground is a **no-obligation cash offer**: it's grounded in comparable sales and your home's actual condition, takes under five minutes to request, and you can [walk away at any point before signing a purchase agreement](https://help.opendoor.com/selling/getting-your-offer/how-to-request-cash-offer). Many sellers use the cash offer purely as a price-discovery tool — a single, real number to anchor their decisions — even if they ultimately list on the open market.
## **Ready to see your exact offer? Get a cash estimate from Opendoor**
If you want a quick, no-obligation way to see your home's current market value and explore selling options, get an instant cash offer from Opendoor. You'll see a clear, transparent price with flexible close timelines—no showings or open houses required. You can review the offer without any commitment to sell, giving you the information you need to make the best decision for your next move.
**FAQs about determining house value**
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*Originally published at [https://www.opendoor.com/articles/how-to-determine-home-value](https://www.opendoor.com/articles/how-to-determine-home-value)*