Calculator Inputs
Enter subject property details, comparable sales, cost data, rent data, and valuation weights.
Formula Used
Comparable adjustment:
Adjusted Price = Sale Price + Size Adjustment + Bed Adjustment + Bath Adjustment + Lot Adjustment + Age Adjustment + Condition Adjustment + Location Adjustment + Time Adjustment
Sales approach:
Sales Value = Sum(Adjusted Comparable Price × Similarity Weight) ÷ Sum(Similarity Weights)
Cost approach:
Cost Value = Land Value + Replacement Cost × (1 − Depreciation Rate) + Improvements − Repairs
Income approach:
Income Value = Net Operating Income ÷ Capitalization Rate
Final value:
Fair Market Value = Sum(Approach Value × Approach Weight) ÷ Sum(Approach Weights)
How to Use This Calculator
Enter the subject home details first. Add size, bedrooms, bathrooms, lot size, age, condition, and location score.
Next, enter three recent comparable sales. Use homes from the same area when possible. Keep sale dates recent.
Then adjust the market assumptions. Enter the value per square foot. Add bedroom, bathroom, age, condition, and location adjustments.
Use the cost section when replacement cost matters. Use the income section when rent potential matters. Change the weights to match your valuation purpose.
Press the calculate button. The result appears under the page header and above the form. You can export the report as CSV or PDF.
Example Data Table
| Input | Example Value | Purpose |
|---|---|---|
| Subject living area | 2,200 sq ft | Sets the main size baseline. |
| Comparable 1 sale price | $520,000 | Starts the sales comparison model. |
| Market change | 4.5% yearly | Adjusts older sales to today. |
| Replacement cost | $185 per sq ft | Builds the cost approach value. |
| Monthly rent | $2,850 | Builds the income approach value. |
Fair Market Value Guide
What Fair Market Value Means
Fair market value is the likely price a home may sell for. It assumes a willing buyer and a willing seller. It also assumes normal exposure to the market. The price is not always the listing price. It is also not always the tax value. A strong estimate uses market evidence. This calculator blends several value signals. It starts with comparable sales. Then it checks cost and rental income. This gives a wider view of value.
Why Comparable Sales Matter
Recent sales are usually the strongest evidence. Buyers compare homes before making offers. Sellers also study nearby closed prices. A comparable sale should be similar. Size, beds, baths, age, and condition matter. Location also changes value. The calculator adjusts each sale. It raises or lowers the comp price. The adjusted price shows a better match. Recent and similar comps receive higher weight.
Cost and Income Checks
The cost approach estimates land and building value. It subtracts age related depreciation. It also includes improvements and needed repairs. This method helps when homes are newer. It can also help when sales data is thin. The income approach uses rent potential. It estimates net operating income. Then it divides income by a cap rate. This is useful for rental property. It may matter less for owner occupied homes.
Reading the Final Range
A value range is safer than one number. Real estate markets move daily. Condition can change buyer behavior. Financing terms can also affect offers. The confidence score reflects comp spread. A tighter spread gives stronger confidence. A wider spread suggests more review. Use the result as guidance. For legal or lending work, hire an appraiser. For pricing, compare the result with current listings.
FAQs
1. What is fair market value?
Fair market value is the likely sale price between informed, willing parties. It assumes normal market exposure and no unusual pressure on either side.
2. Is this the same as an appraisal?
No. This calculator gives an estimate. A licensed appraiser may inspect the home, verify records, and prepare a formal report for lending or legal use.
3. Which approach is most important?
For most homes, comparable sales carry the most weight. Cost and income approaches are useful checks, especially for newer or rental properties.
4. How many comparable sales should I use?
This tool uses three comparable sales. For deeper research, review more nearby sales, active listings, pending sales, and withdrawn listings.
5. What is a location score?
A location score rates the appeal of the area. Schools, access, noise, views, safety, and local demand can all affect this score.
6. Why does the calculator adjust old sales?
Older sales may not reflect current prices. The market change input updates those sales based on the assumed yearly price movement.
7. Can I use this for rental homes?
Yes. Enter market rent, vacancy, expenses, and cap rate. Increase the income approach weight if rental performance is very important.
8. Why is the result shown as a range?
Home value is uncertain. A range accounts for comp quality, buyer behavior, market shifts, and differences that simple inputs may miss.