Analyze Rental, Flip, Rehab & ADU Deals with Confidence.

Real Estate Investment Calculators & Deal Analysis Tools

Make better real estate decisions faster with PropStream’s investment property calculators. Analyze rental income, estimate rehab costs, evaluate fix-and-flip profits, and explore ADU opportunities.

Whether you’re a real estate investor, agent, wholesaler, or broker, PropStream helps you calculate ROI, forecast returns, and compare deals in minutes.

How to Analyze a Real Estate Deal (Step-by-Step)

Use PropStream’s calculators together to fully evaluate any property:

1. Estimate Renovation Costs with the Rehab Calculator
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Every successful investment starts with understanding the true cost of the project. Begin by using the Rehab Calculator to estimate renovation expenses based on the condition of the property and the scope of work needed. This helps you account for repairs, upgrades, labor, materials, and unexpected costs before making an offer. Having a realistic rehab budget allows you to avoid overpaying and gives you a clearer picture of your potential profit margins from the start.

2. Analyze Cash Flow with the Rental ROI Calculator
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Once renovation costs are established, use the Rental ROI Calculator to evaluate the property as a long-term rental investment. This tool helps you estimate monthly cash flow, cap rate, operating expenses, and long-term return on investment based on rental income projections. By understanding how the property may perform over time, you can determine whether it aligns with your investment goals and whether it has the potential to generate sustainable passive income.

3. Evaluate Resale Potential with the Fix & Flip Analyzer
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If your strategy involves reselling the property, the Fix & Flip Analyzer can help you determine whether the deal makes financial sense. This step focuses on estimating the after-repair value (ARV), projected resale price, holding costs, and potential net profit after renovations. By comparing total project costs against expected resale value, investors can quickly identify whether a property has strong flip potential or if the margins are too tight to justify the risk.

4. Explore Added Value with the ADU Calculator
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To maximize the property’s income and appreciation potential, review opportunities for adding an accessory dwelling unit (ADU). The ADU Calculator helps you estimate construction costs, rental income potential, and overall value added to the property through expanded living space. Whether it’s a garage conversion, guest house, or backyard unit, this step can uncover additional revenue streams and increase the long-term profitability of the investment.

5. Structure the Deal with LoanGeek Financing Tools
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After evaluating the numbers, the final step is reviewing financing options with LoanGeek to structure the deal effectively. Financing plays a major role in determining monthly costs, cash flow, and overall return on investment. By comparing loan scenarios, interest rates, down payment requirements, and financing strategies, investors can choose the option that best supports their goals. A strong financing structure helps ensure the investment remains profitable and financially manageable throughout the life of the project.

This step-by-step workflow helps you analyze deals from multiple angles before making a decision.

Pro Tip:

Need help? Use the PropStream Intelligence Assistant to help navigate the calculators.

How To Use PropStream's Calculators & Analyzers

Rental ROI Calculator

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Calculate Rental Property Returns Instantly

The Rental ROI Calculator helps you quickly evaluate any rental property investment.

  • Calculate cash flow, NOI, cap rate, and ROI
  • Analyze income, expenses, and financing in one place
  • Forecast performance with projections and pro forma reports
  • Compare deals with real-time scenario updates

Best for: Buy-and-hold investors, landlords, and real estate agents analyzing rental properties

Fix & Flip Analyzer

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Estimate Profit on Your Next Flip

Quickly determine a fix-and-flip deal is worth pursuing on your next property investment.

  • Calculate total costs, projected profit, and ROI
  • Input purchase, rehab, holding, and selling expenses
  • Identify your maximum allowable offer (MAO)
  • Adjust assumptions to test different scenarios

Best for: Fix-and-flip investors and wholesalers evaluating deal margins

Rehab Calculator

Estimate Renovation Costs with Precision

Build detailed rehab budgets using localized cost data.

  • Create line-by-line renovation estimates
  • Compare DIY vs professional costs
  • Customize projects by area, upgrade type, or individual actions
  • Generate project summaries and reports

Best for: Real estate investors, contractors, and flippers planning renovations

ADU Calculator (Accessory Dwelling Unit)

Evaluate ADU Costs & Investment Potential

Analyze the cost and value of adding an ADU to a property.

  • Estimate construction costs by size, type, and quality
  • Add features like HVAC, laundry, and more
  • Review cost breakdowns based on regional data
  • Evaluate potential rental income and ROI

Best for: Investors and homeowners exploring additional income opportunities

Professional Real Estate Toolbox

The market has changed.

Inventory is tighter, competition is stronger, and waiting for deals to appear on the MLS is no longer enough.

Today’s most successful real estate investors are:

  • Finding off-market properties before they hit the market
  • Targeting motivated sellers directly
  • Building repeatable lead generation systems
  • Creating consistent deal pipelines instead of relying on chance

PropStream helps you make that shift from searching for deals to creating them.

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Why Use PropStream’s Real Estate Calculators?

  • All-in-one platform — No need for multiple tools
  • Real-time data — Instantly updated calculations
  • Scenario testing — Compare multiple investment strategies
  • Faster decision-making — Analyze deals in minutes, not hours
  • Built for investors — Designed for real-world deal evaluation

FAQs: Your Guide to the ADU Rehab Calculator

What is the ADU Calculator used for?

The ADU Calculator is meant to give real estate professionals an estimate of what it would cost to establish an ADU on a subject property. This information can then be used to calculate any potential returns on investment.

What is the Rehab Calculator used for?

The Rehab Calculator is a tool designed to help estimate the costs associated with renovating or rehabilitating a property. It takes into account various factors such as materials, labor, and other expenses to provide a comprehensive cost estimate, making it easier for property investors, homeowners, or renovators to budget and plan their rehab projects.

 

How are the calculations provided?

Your calculations are an estimate based on the zip code for the property, and the figures are based on popular and most common square footage sizes. 

What is the difference between the Rehab and ADU Calculators?

In short: The Rehab Calculator offers estimates for a wide variety of renovation projects for an entire property, while the ADU Calculator specializes in pricing out the addition of a separate dwelling on a subject property.

How can I find a property that will accommodate an ADU?

Before using PropStream to find a property for your ADU, we recommend researching local regulations to ensure they’re legal in your region and speaking with other professionals to see if the property layout and structure can suit an ADU.

Why are ADU and Rehab Calculators useful?

They assist with the comping process during the property research stage. These tools can help you evaluate the potential of a property.

What is the Rental ROI Calculator used for?

The Rental ROI Calculator is used to evaluate the financial performance of a rental property by calculating cash flow, cap rate, and long-term ROI based on income, expenses, and financing inputs.

How does the Fix & Flip Analyzer help investors?

The Fix & Flip Analyzer helps investors estimate total costs, projected profit, and ROI for a flip, while also calculating the maximum allowable offer (MAO) to avoid overpaying on a deal.

Can I use these calculators directly within PropStream?

Yes, the Rental ROI Calculator, Rehab Calculator, ADU Calculator, Fix & Flip Analyzer, and LoanGeek integration are built into the Property Details page, allowing you to analyze deals, adjust assumptions, and make decisions without leaving your workflow.

Start Analyzing Deals Today

Stop guessing and start making data-driven investment decisions.

Use PropStream’s real estate calculators to evaluate deals faster, reduce risk, and maximize returns.

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