Real Estate

House Flipping Calculator

Estimate your house flip profit, ROI, profit margin, and annualized return. Enter all costs to see if the deal pencils out.

Quick Answer

Profit = Selling Price - Purchase Price - Rehab Costs - Holding Costs - Selling Costs. A typical house flip with a $200,000 purchase, $50,000 in rehab, 6 months of holding costs, and a $320,000 sale price yields approximately $35,000-$50,000 in profit, depending on holding and selling costs. Target a minimum 15-20% ROI.

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$
$

Loan payments, taxes, insurance, utilities

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%

Agent commissions + seller closing costs

Net Profit
$35,800
ROI
13.5%
Profit Margin
11.2%
Annualized Return
28.8%
6 month hold

Deal Breakdown

Purchase Price
-$200,000
Rehab / Renovation
-$50,000
Holding Costs (6 mo x $2,500)
-$15,000
Selling Costs (6%)
-$19,200
Total Costs
-$284,200
Selling Price
+$320,000
Net Profit
$35,800

70% Rule Check

Maximum purchase price per the 70% rule: $174,000 (70% of $320,000 ARV minus $50,000 rehab). Your purchase price of $200,000 exceeds the 70% rule by $26,000. This deal carries higher risk.

Disclaimer: This calculator provides estimates for informational purposes only. Actual house flipping profits depend on accurate cost estimation, market conditions, contractor performance, timeline, and many other variables. Unexpected repairs, market downturns, and extended holding periods can significantly impact returns. Real estate investing involves substantial risk including the potential loss of your entire investment. This is not financial or investment advice. Consult qualified professionals before making real estate investment decisions.

About This Tool

The House Flipping Calculator helps real estate investors analyze the profitability of a potential flip deal before committing capital. By entering the purchase price, renovation costs, holding period, monthly holding costs, expected selling price, and selling cost percentage, you get an instant picture of the deal's net profit, ROI, profit margin, and annualized return.

House flipping involves buying a property below market value, renovating it to increase its worth, and selling it for a profit. While the concept is straightforward, the financial analysis behind a successful flip is complex. This calculator simplifies that analysis by giving you a clear, itemized cost breakdown and multiple profitability metrics so you can evaluate deals quickly and objectively.

Understanding the Key Metrics

This calculator provides four profitability metrics. Net Profit is the raw dollar amount you earn after all costs. ROI (Return on Investment) measures your profit as a percentage of your total investment (purchase + rehab + holding costs), showing how efficiently your capital is deployed. Profit Margin shows your profit as a percentage of the selling price. Annualized Return converts your ROI to an annual basis, allowing you to compare flips of different durations on equal footing. A 20% ROI on a 4-month flip is far more attractive than 20% over 12 months.

The 70% Rule

The 70% Rule is the most widely used rule of thumb in house flipping. It states that you should pay no more than 70% of the After Repair Value (ARV) minus estimated repair costs. The 30% buffer accounts for selling costs (8-10%), holding costs, and your desired profit margin. While the rule is a useful screening tool for quickly evaluating deals, it is not a substitute for detailed analysis. Some deals that fail the 70% rule can still be profitable, and some that pass it can lose money if costs are underestimated.

Why Holding Costs Matter

Holding costs are the silent profit killer in house flipping. Every month you own the property, you incur costs for financing, taxes, insurance, utilities, and maintenance. On a $200,000 property with a hard money loan, monthly holding costs can easily reach $2,000 to $4,000. A flip that was supposed to take 4 months but stretches to 8 months can see $8,000 to $16,000 in additional costs erode your profit. This is why experienced flippers focus intensely on minimizing the renovation timeline and listing the property quickly.

Common Mistakes New Flippers Make

The most frequent mistake is underestimating renovation costs. Always add a 15-20% contingency to your contractor bids to cover the unexpected issues that inevitably arise, such as hidden water damage, outdated wiring, or foundation problems. Another common error is overestimating the ARV by comparing to the best comparable sales rather than realistic ones. Be conservative in your projections and your actual results will more often exceed your estimates.

Frequently Asked Questions

What is the 70% rule in house flipping?
The 70% rule is a guideline used by house flippers to determine the maximum purchase price. It states that you should pay no more than 70% of the After Repair Value (ARV) minus the estimated repair costs. For example, if a property's ARV is $300,000 and repairs will cost $50,000, the maximum purchase price should be ($300,000 x 0.70) - $50,000 = $160,000. This rule provides a buffer for unexpected costs and ensures a reasonable profit margin.
What are typical holding costs for a house flip?
Holding costs are the monthly expenses incurred while you own the property. They typically include mortgage or hard money loan payments (often 10-15% interest), property taxes (prorated monthly), homeowners insurance, utilities (electric, water, gas), HOA fees if applicable, and property maintenance. For a $200,000 property with a hard money loan, monthly holding costs typically range from $2,000 to $4,000. Minimizing the holding period is crucial to maximizing profit.
What percentage should selling costs be?
Selling costs typically total 8-10% of the selling price. This includes real estate agent commissions (5-6% split between buyer's and seller's agents), closing costs (1-3% including title insurance, transfer taxes, and escrow fees), staging costs, and any buyer concessions. In this calculator, 6% covers agent commissions, but you may want to increase it to 8-10% for a more conservative estimate that includes all seller-side closing costs.
What is a good ROI for a house flip?
Most experienced house flippers target a minimum ROI of 15-20% on their total investment. After accounting for all costs including purchase, renovation, holding, and selling costs, a net profit of $30,000-$50,000+ per flip is common for successful investors. The annualized return is often more meaningful than raw ROI since flip timelines vary. A 20% ROI on a 6-month flip equals a 44% annualized return, while the same ROI on a 12-month flip equals just 20% annualized.
How do I estimate rehab costs accurately?
Accurate rehab cost estimation requires a detailed inspection and itemized scope of work. Walk through the property with a contractor and get bids for each major category: structural/foundation, roofing, HVAC, plumbing, electrical, flooring, kitchen, bathrooms, paint, landscaping, and permits. Add a 10-20% contingency buffer for unexpected issues. Common cost ranges: kitchen remodel ($15,000-$40,000), bathroom remodel ($5,000-$15,000), roof replacement ($8,000-$15,000), HVAC replacement ($5,000-$10,000). Getting multiple contractor bids is essential.
Should I finance a house flip or pay cash?
Both approaches have tradeoffs. Cash purchases avoid interest costs and speed up closing, but tie up large amounts of capital and limit how many projects you can run simultaneously. Hard money loans (common in flipping) typically charge 10-15% interest and 2-4 points upfront but let you leverage your capital across multiple deals. If a flip generates 25% ROI, financing at 12% still nets you a positive spread while preserving capital for other opportunities. Most successful flippers use financing and factor the cost into their holding costs.

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