Analyze Rental, Flip, Rehab & ADU Deals with Confidence.
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.
Use PropStream’s calculators together to fully evaluate any property:

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.

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.

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.

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.

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.
Need help? Use the PropStream Intelligence Assistant to help navigate the calculators.
Calculate Rental Property Returns Instantly
The Rental ROI Calculator helps you quickly evaluate any rental property investment.
Best for: Buy-and-hold investors, landlords, and real estate agents analyzing rental properties
Estimate Profit on Your Next Flip
Quickly determine a fix-and-flip deal is worth pursuing on your next property investment.
Best for: Fix-and-flip investors and wholesalers evaluating deal margins
Estimate Renovation Costs with Precision
Build detailed rehab budgets using localized cost data.
Best for: Real estate investors, contractors, and flippers planning renovations
Evaluate ADU Costs & Investment Potential
Analyze the cost and value of adding an ADU to a property.
Best for: Investors and homeowners exploring additional income opportunities

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

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.
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.
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.
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.
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.
They assist with the comping process during the property research stage. These tools can help you evaluate the potential of a property.
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.
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.
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.
Stop guessing and start making data-driven investment decisions.
Use PropStream’s real estate calculators to evaluate deals faster, reduce risk, and maximize returns.
