Why the 70% Rule Breaks at $100K and $650K: Adjusting Your Flip Offer by Price Point

What the 70% Rule Quietly Assumes About Your Costs

The formula looks simple: MAO = (ARV x 0.70) - repair costs. The 30% you hold back isn't profit, though. It has to cover buying costs, holding costs, financing, selling costs, and your margin, all bundled into one number. On a $200,000 ARV, that reserve is $60,000, and every one of those expenses has to fit inside it.

The rule works because it treats all of those costs as a fixed share of the sale price. If a $200,000 flip needs $60,000 of cushion, the rule assumes a $100,000 flip needs $30,000 and a $400,000 flip needs $120,000. That shortcut is fine in the middle of the market, where most investors learned it. It gets shaky once you notice that only some of those costs actually move with price.

A few costs truly scale with the sale price. Agent commissions typically run 5% to 6% of the sale, so they grow in lockstep with ARV. Transfer taxes and recording fees in many states are charged per thousand dollars of price. Lender points and interest also track price loosely, since a bigger loan costs more to carry.

Other costs are partly or mostly fixed, no matter what the house sells for:

• The minimum profit worth your time, often $20,000 to $30,000 for a full gut flip
• Title, escrow, and closing fees, which might be $2,500 on a cheap house and only somewhat higher on an expensive one
• Utilities, insurance, and lawn care, often $500 to $900 a month regardless of price
• A baseline of 4 to 6 months of holding time for rehab, listing, and closing

This is where the rule starts to bend. On a $110,000 ARV, 30% is just $33,000, and the fixed costs alone can swallow most of it before you see a dollar of profit. On a $650,000 ARV, 30% is $195,000, which can be far more cushion than the deal needs. The rule doesn't account for that difference, so you have to adjust the percentage yourself at both ends of the price range.

Worked Example: A $110K ARV Flip Where 70% Isn't Enough

Say you find a tired three-bedroom ranch in a working-class neighborhood. Solid comps put the ARV at $110,000, and your contractor walkthrough lands on a $30,000 rehab. Run the textbook formula and you get MAO = ($110,000 x 0.70) - $30,000 = $77,000 - $30,000 = $47,000. On paper, that offer looks safe.

Now add the costs the rule assumes will fit inside that 30% cushion. Selling costs (agent commissions, seller concessions, title, and transfer fees) commonly run around 8%, which is $8,800 here. Buy-side closing adds roughly $2,000. Five months of holding (taxes, insurance, utilities, and loan interest) at $900 per month comes to $4,500. Most of these costs barely shrink when the house gets cheaper.

Here is the real math. Your all-in cost is $47,000 + $30,000 + $8,800 + $2,000 + $4,500 = $92,300. Subtract that from the $110,000 sale price and your profit is $17,700. That is before any rehab overrun or an extra month on the market, either of which can cut it fast.

If your minimum profit target is $25,000 (a reasonable floor for the risk and months of work involved), you are $7,300 short. Work backward from the target instead: $110,000 - $25,000 profit - $30,000 rehab - $8,800 selling - $2,000 closing - $4,500 holding = $39,700. That is your real maximum offer.

Convert that back into rule terms and you get ($39,700 + $30,000) / $110,000 = $69,700 / $110,000, or roughly a 63% rule. On a low-ARV flip, your fixed costs eat a bigger slice of the sale price, so the percentage has to drop to protect your margin. If you anchor on 70% at this price point, you will overpay by thousands and only discover it at the closing table.

Worked Example: A $650K ARV Flip Where 70% Leaves Money on the Table

Take a four-bedroom house in a strong suburb with an ARV of $650,000 and a rehab budget of $90,000. The standard formula gives you an MAO of ($650,000 x 0.70) - $90,000, which is $455,000 - $90,000 = $365,000. On paper, that is a disciplined offer. In practice, it is often too low to win the deal.

Run the real costs at that $365,000 price. Selling costs at 7% come to $45,500. Buy-side closing costs are about $5,500. Six months of holding at $4,500 a month (loan interest, taxes, insurance, utilities) adds $27,000. Your all-in cost is $365,000 + $90,000 + $45,500 + $5,500 + $27,000 = $533,000, so you walk away with $117,000 in profit. That is a great result, but most investors don't need that much margin on a deal this size.

Now work backward from a $70,000 profit target. Subtract every cost and your target from the ARV: $650,000 - $90,000 - $45,500 - $5,500 - $27,000 - $70,000 = $412,000. Your true maximum offer is $47,000 higher than the 70% rule suggests. Add rehab back in and divide by ARV, and ($412,000 + $90,000) / $650,000 works out to about 77%. At this price point, a 77% rule fits your actual numbers better than 70%.

This gap matters because other buyers are doing this same math. If you offer $365,000 and a competitor offers $395,000, they still clear roughly $87,000 and you lose the house. A rigid 70% rule on higher-priced flips quietly filters you out of deals that would have paid you well. Fixed costs like closing fees and holding don't scale with the price, so they eat a smaller share of the profit.

The fastest way to see this is to run both offer prices side by side. In FlipSmrt, you can enter $365,000 and $412,000 against the same ARV and rehab budget and watch projected profit update instantly. That shows you exactly how high you can go before the deal stops being worth your time.

Edge Cases That Shift Your Percentage Up or Down

Price is only one lever. Rehab risk matters just as much. A cosmetic refresh (paint, LVP flooring, light fixtures, a kitchen face-lift) has predictable costs, so you can often stretch toward 75% safely. A full gut with new electrical, plumbing, permits, and possible foundation work hides surprises behind every wall. On those jobs, drop toward 65% or add a 15% contingency to your rehab line.

Market speed and financing compound each other. In a hot market where flips sell in 30 days, your holding costs stay small. In a slow market averaging 90 or more days on market, every extra month costs you. With hard money at 12% interest plus 2 points on a $300K loan, you pay $6,000 upfront and roughly $3,000 per month in interest alone. A cash buyer carries less monthly cost and can push the percentage higher, while a hard money borrower in a slow market should pull it lower.

Luxury flips bring their own timeline problems. The buyer pool for a $900K home is smaller, many buyers need jumbo loans, and appraisals get stricter, so plan for longer exits. Price-capped neighborhoods are the other trap. If the highest comp on the street sold for $650K, spending an extra $80K on designer finishes will not get you $730K. Over-rehabbing past the comps ceiling erases whatever extra margin a higher percentage seemed to give you.

The better rule of thumb is to drive your percentage from a minimum dollar profit and a realistic month count. Say the ARV is $400K, you want at least $50K profit, selling and closing costs run 8% ($32K), rehab is $60K, and holding costs are $3,500 per month for 6 months ($21K). Your max purchase is $400K minus $50K, $32K, $21K, and $60K, which comes to $237K. That works out to ($237K + $60K) / $400K, or about 74%. Stretch the timeline to 9 months and holding jumps to $31,500. Your max purchase falls to $226,500, which equals roughly 71.6%. The percentage becomes an output of your real costs, not a fixed input.

Common Mistakes When Adjusting the 70% Rule

Stretching to 75-80% on cheap houses. Investors in low-price markets often decide the rule feels too strict and loosen it to win deals. That runs backward. On a $100K ARV, moving from 70% to 80% raises your offer by $10,000, which is often your entire profit once fixed closing costs and commissions take their share. Fix: on sub-$150K flips, tighten toward 60-65% unless your line-item costs prove otherwise.

Applying 65% to expensive houses and never winning a bid. Some flippers learn the cheap-house lesson and carry it everywhere. On a $650K ARV, 65% versus 72% is a $45,500 gap in your offer, and competing buyers will close that gap every time. Months without an accepted offer is a signal, not bad luck. Fix: build your percentage from actual cost line items at each price point, not from fear.

Changing the percentage but not the holding months. Higher-priced homes often sit longer on market, and bigger rehabs take longer to finish. If you move to 75% on a $600K project but still budget four months of carry, you have understated interest, taxes, insurance, and utilities. At $5,000 a month, two extra months costs $10,000. Fix: re-run holding costs every time you change the percentage.

Letting an inflated ARV hide behind a higher percentage. A generous percentage multiplies whatever ARV you feed it, including a wrong one. Use a $700K comp when the real value is $650K, and 72% turns that $50K error into a $36K overpayment. The percentage felt justified, but the input was broken. Fix: lock the ARV from three or more recent, nearby, similar sold comps before touching the percentage.

Confusing profit as a percent of ARV with return on cash invested. A $40K profit on a $650K ARV is only about 6% of ARV, which looks thin. But if you put in $100K of your own cash, that is a 40% return on the money you invested. The reverse trap exists too, since a healthy margin on a cheap all-cash flip held nine months can still be a weak return. Fix: track both numbers and decide based on return on the cash you actually put in.

FAQ: Price-Adjusted 70% Rule Questions

Is the 70% rule still useful at all? Yes, as a first filter rather than a final offer. It tells you in ten seconds whether a deal is in the right neighborhood, so you know whether to spend an hour on real numbers. Just treat 70% as a starting point that moves down for cheap houses and up for expensive ones.

What minimum profit should a flipper target? Set a dollar floor and a percentage floor, and require both. Many flippers won't touch a deal under $25,000 to $30,000 in profit, because one surprise (a sewer line, a two-month price cut) can wipe out anything thinner. On higher price points, aim for roughly 10% to 15% of ARV so your cushion grows with your risk.

Should I ever go above 75%? Sometimes, on high-ARV deals with light rehab and fast-moving comps. At a $650,000 ARV with a $60,000 rehab, a 78% offer is ($650,000 x 0.78) - $60,000 = $447,000. If selling costs run about $52,000 and holding plus financing about $30,000, you still clear around $61,000, which is roughly 9.4% of ARV.

How do I set my own percentage for my market? Work backward from your last few flips. Add up actual selling, closing, holding, and financing costs as a percentage of sale price, then add your target profit percentage. If costs averaged 18% and you want 12% profit, your number is 100% - 30% = 70%. On a $110,000 house where fixed costs eat a bigger share, the same math often lands you at 60% to 65%.

How do I check the adjusted offer quickly before calling a seller? Paste the address into FlipSmrt to pull an ARV from real comparable sales and a line-item rehab budget in seconds. Then plug in the offer price you're considering and see the projected profit right away. If it falls short of your floor, you know your walk-away number before the conversation starts.