Real Estate Investment ROI Calculator

A comprehensive web application for analyzing and visualizing the financial metrics of real estate investment properties.

Overview

This calculator helps real estate investors analyze investment properties by calculating key financial metrics, visualizing cash flows, and projecting returns over time. Users can input property details, financing terms, income, expenses, and growth projections to get a comprehensive analysis of investment potential.

Features

• Interactive Input Form: Input all property and financial details using a user-friendly form
• Real-time Calculations: See results update instantly as you change input values
• Comprehensive Metrics: Calculate key real estate investment metrics:
  • Monthly and Annual Cash Flow
  • Cash on Cash ROI
  • Cap Rate
  • Debt Coverage Ratio
  • Break-even Ratio
  • 5-Year Return on Investment
• Data Visualization:
  • Cash Flow Breakdown Chart
  • 10-Year Investment Projection Chart
  • Detailed Investment Summary
• Responsive Design: Works on desktop and mobile devices

Metrics Explained

• Cash Flow: The income left after all expenses are paid (monthly/annual)
• Cash on Cash ROI: Annual cash flow divided by total initial investment
• Cap Rate: Net operating income divided by property purchase price
• Debt Coverage Ratio: Net operating income divided by annual mortgage payment
• Break-even Ratio: Total operating expenses plus mortgage payment divided by gross income
• ROI with Equity: Total returns including cash flow and property equity growth

Usage

1. Enter property details in the input form (purchase price, address, size, etc.)
2. Input financing details (down payment, interest rate, loan term)
3. Add income information (monthly rent)
4. Enter all expenses (property tax, insurance, maintenance, etc.)
5. Set appreciation and growth expectations
6. View the calculated metrics, cash flow breakdown, and investment projections

Technical Details

Architecture

• Frontend: React with functional components
• Visualization: D3.js for custom interactive charts
• Styling: Custom CSS with responsive design

Dependencies

• React 19.x
• D3.js 7.x

Browser Support

Supports all modern browsers including:

• Chrome (latest)
• Firefox (latest)
• Safari (latest)
• Edge (latest)

Future Enhancements

• PDF report generation
• Property comparison feature
• Ability to save multiple property analyses
• Tax considerations in calculations
• Integration with real estate APIs for market data

License

This project is open source and available under the MIT License.