Property Value Estimator — Free Tool

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Property Value Estimator

Sales comparison · Income capitalization · Cost approach

📐 Sales Comparison Approach

Property Size (sqft)

Comp 1 Sale Price ($)

Comp 1 Size (sqft)

Comp 2 Sale Price ($)

Comp 2 Size (sqft)

💵 Income Approach (Rentals)

Annual Net Operating Income ($)

Leave blank if owner-occupied

Market Cap Rate (%)

Local market cap rate

🏗️ Cost Approach

Land Value ($)

Replacement Cost ($/sqft)

Cost to rebuild per sqft

Physical Depreciation (%)

Age/condition: new=0%, old=30%+

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Sales Comparison

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Income Approach

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Cost Approach

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Reconciled Value

About This Calculator

The Property Value Estimator uses three professional appraisal approaches to estimate property value. Professional appraisers reconcile all three methods to arrive at a final opinion of value.

Sales Comparison Approach: the most commonly used method — compares the property to recent sales of similar properties. Best for residential properties in active markets. Income Capitalization: divides Net Operating Income by the market cap rate. Used primarily for investment and commercial properties. Cost Approach: estimates land value plus the depreciated replacement cost of improvements. Best for unique properties or new construction.

This tool provides estimates — not formal appraisals. For financing, legal, or tax purposes, always engage a licensed appraiser.

Frequently Asked Questions

How do appraisers determine property value?▼

Professional appraisers use three approaches: (1) Sales Comparison — comparing to recent similar sales; (2) Income Approach — capitalizing rental income for investment properties; (3) Cost Approach — land value plus depreciated replacement cost. They weight each approach based on property type and data availability, then reconcile to a final value.

How accurate are online property value estimates?▼

Online estimates (Zillow Zestimate, Redfin, etc.) have a median error rate of 2–8% in active markets with good data, and can be off by 10–20%+ in rural areas or for unusual properties. They're useful for quick screening but should not be relied on for major financial decisions.

What factors affect property value most?▼

Location is the #1 factor (neighborhood, school district, proximity to amenities). Size (sqft) and bedroom/bathroom count. Condition and age of systems. Recent updates and renovations. Lot size. Current market conditions (supply/demand, interest rates). Comparable sales in the immediate area.

What is the income capitalization approach?▼

Income Approach: Value = Net Operating Income ÷ Cap Rate. Example: $24,000 NOI ÷ 6% cap rate = $400,000 value. This approach values property based on its income-producing ability — the higher the NOI and lower the cap rate (stronger market), the higher the value.

When should I get a professional appraisal?▼

Get a professional appraisal when: refinancing or getting a mortgage (lender requires it), selling and wanting an independent opinion, estate planning or divorce proceedings, disputing a property tax assessment (use appraisal as evidence), or making a major purchase decision where accurate valuation is critical.