After funding over 1,000 fix-and-flip loans since 2013, we've watched investors win and lose. These are the ten mistakes we see new flippers make most often — and the concrete fix for each one.
There's no shame in being new to this. Every flipper in every market once did their first deal. But there's a real difference between investors who make rookie mistakes and learn, and investors who make rookie mistakes and lose their capital. This guide is here to make sure you stay in the first camp.
1
Overpaying because you "feel" the deal
The mistake
You walk a property, fall in love, and start convincing yourself the numbers work.
The cost
$20K-$80K of unrecoverable spread on a single deal.
The fix
Set your max offer in writing before you walk the property. Use 70% of ARV minus rehab as a hard cap. If you can't get the deal under that, walk. There will be another one.
2
Underestimating the rehab
The mistake
You eyeball the kitchen, guess $20K, and skip the contractor walk.
The cost
Rehab overruns are the #1 reason flips fail. Most rookie projects come in 20-40% over budget.
The fix
Walk every property with a contractor before you offer. Get a written scope of work with line items. Add a 10-15% contingency on top. If your contractor is too busy, find one who isn't — they'll save you ten times their hourly rate.
3
Falling in love with cosmetic upgrades the market doesn't reward
The mistake
Quartz countertops in a $250K starter neighborhood. Imported tile in a $350K market.
The cost
$8K-$25K in over-improvement you can't recoup.
The fix
Match the rehab to the resale price. In a $300K market, do laminate counters that look like quartz. In an $800K market, splurge. Pull comps in the same neighborhood and finish to comparable level — no higher.
4
Ignoring the holding cost meter
The mistake
"I'll be in and out in 3 months."
The cost
$400-$1,200/month in property taxes, insurance, utilities, HOA, and lawn care. Multiplied by the months you didn't budget.
The fix
Assume your hold will be 9 months, not 3. Budget all holding costs from day one. If you exit faster, that's gravy — not the plan.
5
Hiring the cheap contractor
The mistake
"He's $15/hour cheaper than the other bid."
The cost
A 6-week project that turns into 6 months. Permit failures. Re-work. A contractor who walks off the job mid-rehab.
The fix
Hire the contractor with the best references in the price range you're working in, not the cheapest bid. Cheap contractors are cheap for a reason. Ask for three recent projects you can drive by. Call those clients.
6
Skipping the inspection
The mistake
"It's an as-is deal, why pay $400 for an inspection?"
The cost
A surprise foundation crack, sewer line, or roof structural issue that destroys the deal economics.
The fix
Always inspect. Even on as-is deals where you can't renegotiate, the inspection tells you what you're walking into. A $400 inspection that catches a $40K problem is the best ROI in real estate.
7
Underwriting on a vibe, not the comps
The mistake
"Zillow says $580K so I'll list at $620K."
The cost
A property that sits for 90+ days, gets price-cut twice, and exits at $560K.
The fix
Pull 3-5 SOLD comps (not active listings) within 0.5 miles in the last 90 days. Average them. That's your ARV — minus 5-10% for safety. If your projected ARV is higher than every comp, you're dreaming.
8
Going to a high-fee lender to save 1% on the rate
The mistake
You shop for the lowest rate and pick a lender with junk fees in the fine print.
The cost
$2K-$8K in surprise fees at closing. Plus delays that blow your contractor schedule.
The fix
Compare the total cost — rate + points + processing + doc fees + underwriting + appraisal — not just the rate. A 12% lender with no fees can beat a 10.5% lender with $5K in junk fees on a 6-month hold. Use our free deal calculator to see the math.
9
Trying to manage the project from out of state (or just from email)
The mistake
You buy the property, fly home, and try to run the rehab via text message.
The cost
Slow decisions, missed details, contractor freelancing, scope creep, blown timeline.
The fix
Either be local, hire a project manager who is, or partner with a local investor who'll babysit the project for a profit share. There is no remote-only fix-and-flip that works at scale.
10
Not having an exit plan B
The mistake
"I'll just flip it" — with no backup plan if the market shifts.
The cost
When the market softens and your flip doesn't sell at your number, you're forced to dump it or hold it without a plan.
The fix
Underwrite to TWO exits before you close: (1) the flip exit at your projected ARV, and (2) a rental exit at the market rent. If the rental yields 6%+ on total invested capital, you have a built-in plan B. If both flip and rent don't pencil, don't do the deal.
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