How to Calculate Profit on a House Flip

What house flipping profit measures

A flip profit estimate asks how much may remain after the renovated property is sold and the modeled project costs are paid. The calculation is project-specific and time-bound. It is not the same as the visible discount between the purchase price and the expected resale price.

The sale price is often represented by after-repair value, or ARV, during planning. ARV is an estimate of what the completed property may sell for under stated market and condition assumptions. It is not a guaranteed contract price, appraisal, or future proceeds figure.

Purchase closing costs can include title, settlement, recording, inspections, and other transaction charges depending on the deal. Rehab costs include the actual construction scope, labor, materials, permits, and a supportable contingency. Financing costs reflect the borrowed amount, rate, time, points, and fees represented by the chosen model.

Holding costs continue while the property is owned: tax, insurance, utilities, security, association dues, lawn or snow service, and other carrying costs. Selling costs may include brokerage commission, seller closing costs, concessions, transfer charges, staging, and final repairs. Omitting any major category turns estimated profit into a misleading spread.

Build the project cost stack step by step

1. 1

   Set the acquisition basis

   Start with the contract purchase price and add buyer closing costs instead of assuming the price is the full acquisition outlay.

2. 2

   Budget the complete rehab

   Tie labor, materials, permits, design, cleanup, and contingency to a written scope and schedule.

3. 3

   Model financing

   Apply the financing method to the borrowed amount and expected duration; add points or fees separately when the model does not include them.

4. 4

   Calculate holding costs

   Multiply recurring tax, insurance, utilities, and other ownership costs by the expected project months.

5. 5

   Estimate selling costs

   Apply commission and seller closing assumptions to the supported sale price, then include known concessions or preparation costs.

6. 6

   Subtract every category

   Deduct the complete project cost from expected sale price, then compare profit with cash invested and project duration.

The YieldRoof model estimates simple financing interest on the acquisition loan across the holding period. That makes the assumption visible, but actual renovation financing may involve draws, interest on changing balances, points, extension fees, minimum interest, or funded interest reserves. Add those items separately when they apply.

Timing connects several categories. A delay can add financing interest, tax, insurance, utilities, and other monthly holding costs at once. It may also push the sale into a different market period. A useful model therefore tests more than one duration rather than treating the planned schedule as certain.

Complete house flip profit example

Consider a property purchased for $200,000 with a $50,000 renovation and a $350,000 expected sale price. The project uses a 20% down payment, a 10% financing assumption, and a 6-month holding period.

The apparent purchase-to-ARV spread is $150,000. That number ignores the renovation and every transaction or carrying cost, so it is not profit.

Buying costs add $4,000.00. Financing adds $8,000.00, while property tax, insurance, utilities, and other carrying expenses total $4,500.00. Selling costs remove another $28,000.00 from proceeds.

After all modeled categories, total project cost is $294,500.00 and estimated profit is $55,500.00. The original $150,000 spread has contracted substantially. This is why “ARV minus purchase and rehab” is not an adequate flip formula.

Profit, ROI, and annualized return answer different questions

Net profit is a dollar amount. It helps show the remaining project margin and the capacity to absorb surprises. ROI is a percentage that relates profit to a defined investment base. The YieldRoof model divides estimated profit by modeled cash invested, which includes down payment, rehab, buying costs, financing cost, and holding costs but not borrowed purchase principal.

Another analyst may divide profit by total project cost or by peak cash exposure. Those percentages are not directly comparable without matching definitions. Label the denominator and include the dollar profit so the percentage cannot conceal a small absolute margin.

Annualized return attempts to express a multi-month result as a yearly rate. Simply multiplying a six-month ROI by two assumes the outcome can be repeated immediately with the same capital, duration, risk, and no idle time. A compounded annualization formula also embeds a reinvestment interpretation. Because those assumptions are rarely neutral, treat annualized return as a separate scenario rather than the project’s basic profit.

Project duration remains important even without annualizing. Two projects with the same profit and cash invested may expose capital for very different periods. Track expected and downside completion dates, including acquisition, construction, listing, contract, and closing—not just active renovation days.

Treat ARV as a range, not a guaranteed sale price

ARV should describe the completed property under a specific scope. Support it with relevant sales and carefully adjust for location, size, condition, layout, features, and timing. A renovated comparable does not support the same value if the planned finish or functional utility is materially different.

Market conditions can change between acquisition and sale. Buyer demand, available inventory, financing conditions, competing listings, and the property’s final presentation may affect price and marketing time. Even a reasonable planning value can differ from the eventual contract and net proceeds.

Run sensitivity cases below the base ARV. Because many selling costs are percentage-based, a lower sale price changes both proceeds and those costs. Also test higher rehab and longer duration together; construction problems often affect both cost and schedule rather than arriving independently.

A project with a healthy margin under several downside cases is different from one that works only at the highest plausible sale price. Sensitivity analysis does not predict which case will occur, but it shows how much assumption error the planned margin can absorb.

Common house flipping calculation mistakes

• Calling the purchase-to-ARV spread profit. Subtract rehab and every transaction, financing, holding, and selling cost.
• Budgeting only visible construction. Include design, permits, cleanup, deliveries, corrections, and contingency when applicable.
• Ignoring time. Financing and carrying costs continue through delays, listing, contract, and closing.
• Applying financing to the wrong base. Model the amount and timing actually borrowed rather than the full project cost by default.
• Omitting sale friction. Commission, seller closing costs, concessions, staging, and final preparation can materially reduce proceeds.
• Using ROI without a denominator. State whether it uses cash invested, project cost, or another base.

Do not treat a contingency as expected profit. It is a planning allowance for uncertainty. If it remains unused, the realized result may improve; removing it at acquisition merely transfers known uncertainty out of the visible budget.

Use the profit model to control the project

Before acquisition, connect the purchase offer to a written scope, supportable ARV range, financing terms, and a complete sale-cost assumption. Confirm that enough liquidity remains for contingency and schedule risk rather than committing every available dollar to the base budget.

During the project, update committed costs and forecast-to-complete instead of comparing only cash spent with the original rehab budget. A project can appear under budget halfway through while already carrying signed change orders and delayed work that will exceed it.

Before listing, replace ARV with a current pricing range and refresh the selling-cost estimate. Compare accepting a lower price sooner with the cost and uncertainty of additional holding time. The model should support that tradeoff rather than anchoring the decision to the earliest optimistic estimate.

The final decision combines profit dollars, cash-based ROI, duration, downside exposure, workload, and the reliability of every major assumption. No single rule or percentage can replace property-specific due diligence and a realistic execution plan.