Jumping into a fix and flip without doing your homework first is one of the fastest ways to lose money in real estate. The numbers have to work before you ever call a lender, and that means running a real estate deal analysis that covers every cost, every assumption, and every risk before you put a dollar on the table.
Thank you for reading this post, don't forget to subscribe!This guide walks you through exactly how to do that, step by step.
Analyzing a fix and flip deal means working through all the financial moving parts of a property before you buy it. You are trying to answer one question: Will this project make money after all costs are covered? That includes the purchase price, renovation expenses, financing costs, holding costs, and closing fees on both ends of the transaction.
The analysis starts with the end in mind. You figure out what the property will sell for after repairs, then you work backward to see what you can afford to pay for it today. If the math works, you move forward. If it does not, you move on.
ARV calculation is the foundation of every fix and flip deal. The after-repair value is what the property will be worth once all renovations are complete and it is ready to sell on the open market. Everything else in your analysis depends on getting this number right.
To calculate ARV, you need to find comparable sales, also called comps, within the same neighborhood. Look for homes that are similar in size, age, layout, and condition that have sold within the last three to six months. The closer the comp, the better.
Fast Fact: According to data from the fix and flip lending industry, around 83% of flips sell for less than the investor’s initial estimate. A conservative ARV protects your margins when reality does not match projections.
Step 2: Estimate Your Rehab Costs Accurately
Rehab cost estimation is where most new investors get into trouble. Underestimating the renovation budget is one of the single most expensive mistakes you can make on a flip, because every dollar over budget comes directly out of your profit.
There are generally three categories of renovation scope, and lenders look at them differently:
| Renovation Type | Estimated Cost Range | Notes |
| Light cosmetic | Under $30,000 | Paint, flooring, fixtures, landscaping |
| Mid-level rehab | $30,000 to $75,000 | Kitchen/bath updates, HVAC, windows |
| Heavy structural | Over $75,000 | Foundation, roof, full gut renovation |
Before you submit any deal to a lender, get a contractor estimate in writing. Lenders scrutinize renovation budgets closely, and inflated or vague numbers cause problems later in the draw schedule.
Walk the property room by room with a checklist. Inspect every outlet, switch, door, window, and appliance. Identify what must be done to make the house livable, what should be done to maximize sale price, and what could be done if the budget allows. Prioritize accordingly.
Always add a contingency buffer of at least 10% to your rehab cost estimate. Cost overruns are common, and this cushion is the difference between a project that stays profitable and one that does not.
Your real estate deal analysis cannot stop at purchase price plus renovations. There is a full layer of costs that happen while you own the property and when you sell it, and they add up faster than most people expect.
Holding costs to include in your analysis:
Closing costs on both ends:
Project timelines average around 180 days, and financing costs consume a significant portion of your margin during that period. If you underestimate how long the project takes, holding costs alone can turn a good deal into a break-even or a loss.
The 70% rule is a widely used shorthand in the fix and flip world. It says you should not pay more than 70% of the after-repair value, minus your estimated rehab costs.
The formula:
(ARV x 0.70) minus Rehab Costs = Maximum Purchase Price
Example:
This is a starting point, not a final answer. In competitive markets, deals that meet the 70% rule exactly are rare. Use it as a quick filter to decide whether a property is worth deeper analysis, not as a substitute for a full real estate deal analysis.
Fix and flip loans work differently from traditional mortgages. Lenders focus on the ARV and the investor’s ability to execute the project, not primarily on personal income or credit score. Loan amounts are typically based on a percentage of the ARV and the expected rehab costs.
Fun Fact: Unlike traditional mortgages, fix and flip loans are typically interest-only during the project, which keeps monthly payments lower while you work. But that interest is still accumulating, so every extra week on the timeline costs money.
Hard money lenders can often approve and close in days rather than weeks, which matters in competitive markets where sellers favor investors who can move fast.
Once you have your ARV, rehab costs, holding costs, financing costs, and closing costs lined up, you can calculate your expected return and back into a maximum purchase price.
The core equation:
Profit = ARV minus (Purchase Price + Rehab Costs + Holding Costs + Financing Costs + Closing Costs)
If the profit number is not acceptable, you have two options: lower your maximum offer or walk away from the deal. Experienced investors target a minimum return of 15% or more, though current market conditions have compressed margins. Median gross profits on flips dropped to around $66,000 in 2025, with average returns at roughly 25%, the lowest level in years. That makes disciplined analysis more important now than ever.
Never negotiate your profit margin down to make a deal work on paper. If the numbers only work under best-case assumptions, the deal is not ready.
Even experienced investors make errors in their real estate deal analysis. Here are the ones that hurt the most:
Knowing how lenders evaluate your deal helps you prepare a stronger submission and move through underwriting faster.
| What Lenders Review | What They Want to See |
| Purchase price vs. ARV | Strong spread with a buffer built in |
| Rehab budget | Contractor-validated, line-item detail |
| Borrower experience | Track record of completed projects |
| Reserves | Proof of liquidity to cover down payment and overruns |
| Exit strategy | Clear plan to sell or refinance by a specific date |
Having a property inspection, contractor estimate, and preliminary scope of work ready before you approach a lender speeds up pre-qualification and signals that you are serious about closing.
At Private Money Capital, we work with real estate investors who know how to analyze a fix and flip deal and need a lending partner who moves as fast as they do. Whether you are running your first flip or scaling a portfolio, our team can help you structure financing that fits your project timeline and profit targets.
