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How to Use Comparable Sales in Real Estate
Use distance, recency, size, and condition to estimate property value.
Analyze this faster
Use the AI Deal Analyzer to extract property details, then validate assumptions with DealCalc calculators.
Why this matters
Real estate investors do not need a number in isolation. They need a decision framework. A good analysis connects price, value, income, expenses, risk, and exit strategy.
Core formula or model
Start with the industry-standard formula, then adjust for market reality. Verify assumptions with comparable sales, rent comps, title data, taxes, insurance, condition, and financing terms.
Investor example
Assume a property has a purchase price, repair budget, estimated value, rent potential, and transaction costs. The right conclusion depends on whether the numbers support the intended strategy: rental, flip, wholesale, or land resale.
Common mistakes
- Relying on active listings instead of sold or leased comps.
- Ignoring vacancy, maintenance, closing costs, and reserves.
- Using one exit strategy without comparing alternatives.
- Making an offer before verifying title, taxes, and property condition.
Next step
Run the numbers in the related DealCalc tools and use AI analysis when you have a CMA, MLS sheet, flyer, or seller packet.
Author: DealCalc Editorial Team