How to Flip a House: The Step-by-Step Process (With Real Numbers)
How to flip a house in 2026: the complete step-by-step process with real numbers. Covers the 70% rule, how to calculate ARV, building a rehab budget, hard money financing, and a full deal P&L so you know exactly what you are making before you buy.
The average house flip in 2026 takes 161 days from purchase to close. The average gross profit is $70,000 to $90,000 before you subtract holding costs, financing, and taxes. Some investors do this four to six times a year. Others lose money on their first deal because they got the numbers wrong before signing the contract.
The difference is almost always the analysis phase. Most beginners overestimate ARV, underestimate rehab costs, and forget to model holding and selling expenses. Here is the full process, with real numbers at every step.
Step 1: Learn the 70% Rule (Your First Deal Filter)
To flip a house: (1) Apply the 70% rule to screen deals; (2) Find below-market properties; (3) Calculate ARV from comparable sales; (4) Build a detailed rehab budget with contingency; (5) Secure financing (hard money, cash, or HELOC); (6) Manage the renovation to budget and timeline; (7) Sell at market value. Run accurate numbers before you buy, or the math catches you after.
The 70% rule is the quickest filter to eliminate deals that cannot work before you waste hours of due diligence.
The formula: Max Purchase Price = (ARV x 0.70) minus Estimated Rehab Costs
Example: ARV $250,000. Multiply by 70% = $175,000. Subtract $40,000 rehab budget = maximum offer of $135,000. Any offer above $135,000 on this property, at these rehab costs, does not pass the 70% rule.
Why 70%? The remaining 30% of ARV is not profit. It covers selling costs (typically 6-8% of sale price for agent commissions and closing costs), holding costs during the rehab and sales period (2-4% of purchase price), and your target profit margin (10-20% of ARV). A deal at exactly 70% with perfect execution is a thin deal. Strong flips buy well below 70%.
The 70% rule is a filter, not a guarantee. Any deal that passes it still needs a full financial analysis before you make an offer.
Step 2: Find the Right Property
The best flips come from motivated sellers with distressed properties in desirable resale markets. The harder part is finding them before someone else does.
Primary sourcing channels: Direct mail campaigns to absentee owners or tax-delinquent properties, cold calling lists of distressed homeowners, driving for dollars (identifying properties showing physical distress in target neighborhoods), foreclosure and bank-owned listings, and wholesalers who control contracts on off-market deals.
What you are looking for: A property priced 20-35% below its post-renovation value, in a neighborhood with active buyer demand and recent comparable sales. Cosmetic issues (dated finishes, poor landscaping, deferred maintenance) are ideal. Structural issues (foundation problems, severe roof damage, mold, major plumbing failures) require expert assessment before any offer, as costs are hard to estimate and often expand during demo.
Red flags that kill margins: Foundation movement, active mold in unconditioned spaces, knob-and-tube wiring in a jurisdiction requiring full replacement, and properties in zip codes with thin comparable sale activity. If you cannot find three to five closed comps within a half mile in the past 90 days, pricing ARV becomes speculative.
Step 3: Calculate Your ARV
ARV is the number that determines whether a flip works. Every other number is downstream of it.
ARV (After Repair Value) is the price the property will sell for in fully renovated, retail-ready condition. It is not the current listing price, not the assessed value, and not what you paid. It is what a retail buyer will pay in the open market after all work is complete.
How to calculate it: Pull three to five comparable closed sales within half a mile of the target property, sold in the past 90 days, with similar square footage (within 10-15%), bed and bath count, and condition. Adjust for meaningful differences: a comparable with a finished basement adds value; a comparable on a busier road discounts it.
Real estate agents run this analysis daily. Alternatively, ProPilot auto-generates comparable sales for any target property using the same MLS data your agent would pull. You enter the address and get a comp set in seconds rather than spending 30 to 45 minutes cross-referencing Zillow and county records manually. When you are running preliminary analysis on 20 to 30 properties a week, that speed matters.
Try ProPilot free for 7 days.
Where beginners go wrong: Using active listings (not closed sales) as comps. Using comps from outside the immediate neighborhood. Ignoring condition adjustments. All three inflate ARV and make a marginal deal look viable on paper.
Step 4: Build Your Rehab Budget
Underestimating rehab is the most common reason profitable flips turn into break-even or losing deals.
Break the property into major systems and estimate each separately: kitchen, bathrooms, flooring, paint (interior and exterior), HVAC, roof, electrical panel, plumbing, windows, and landscaping. For each system, get two to three contractor bids. Never use a single bid as your budget baseline.
After you have bids, add 15-20% contingency to the total. This is not pessimism; it is project management. Demo reveals hidden problems. Permits create delays. Material costs shift between bid and purchase. Contractors miss line items. The 15-20% contingency covers the category of inevitable surprises, not a specific identified risk.
Common budget killers: Mold discovered during demo (remediation adds $3,000 to $15,000+ depending on scope), HVAC replacement not in the original scope (full system replacement runs $6,000 to $12,000), permitting delays that extend holding costs by 30 to 60 days, and water damage uncovered after flooring is removed.
The rule on contractor payments: Never pay more than one-third of the total contract upfront. Structure payments around completion milestones. A contractor asking for 50% or more before work starts is a risk signal.
Step 5: Finance the Flip
Most house flippers use one of four capital sources: personal cash, hard money loans, private money from individuals, or a HELOC against an existing property.
Hard money is the most common vehicle for first-time and active flippers who are not using all-cash. Hard money lenders are asset-based: they lend against the property value (typically 65-80% of ARV), not your income or credit score. Approval takes five to ten days. Typical terms in 2026: 10-12% annual interest, 1-3 origination points, six to eighteen month term.
Model your holding costs before you close. The number that surprises most beginners is how quickly interest, taxes, insurance, and utilities compound over a 4-6 month hold.
Full deal P&L example (using the $250,000 ARV property from Step 1):
| Cost Item | Amount |
|---|---|
| Purchase price | $135,000 |
| Rehab costs | $40,000 |
| Hard money interest (11%, 6 months on $150k) | $8,250 |
| Origination points (2 points on $150k) | $3,000 |
| Insurance + property taxes (6 months) | $2,200 |
| Utilities during rehab (6 months) | $1,200 |
| Agent commission (5.5% of $250k) | $13,750 |
| Seller closing costs (1% of $250k) | $2,500 |
| Total costs | $205,900 |
| Sale price (ARV) | $250,000 |
| Gross profit before income tax | $44,100 |
This deal passes the 70% rule and generates a 17.6% return on total costs. It is not exceptional, but it is real. At a higher ARV (or a better purchase price), the profit margin widens significantly.
For a deeper breakdown of how to finance your flip with hard money, see our fix and flip loans guide.
Step 6: Manage the Rehab
Once you own the property, the rehab phase is where timeline and budget discipline determine your outcome.
GC vs. self-managing subs: A general contractor handles scheduling, subcontractor coordination, and quality control in exchange for 15-25% of the total rehab cost. Self-managing subs reduces cost but adds significant time and requires you to coordinate electricians, plumbers, framers, and finish crews simultaneously. For a first flip, a GC reduces risk even at the cost of margin.
Weekly check-ins are the minimum standard. Photo-document every stage: pre-demo, rough-in, rough inspection, and finish. This documentation protects you in disputes, helps with insurance claims, and builds the project record that future appraisers and buyers will want.
Track every expense from day one in a dedicated project ledger. Budget creep is how $40,000 rehabs become $52,000 rehabs. The only way to catch it early is to log every payment as it happens.
Step 7: Sell or Keep It
When the renovation is complete, you have two options: sell at retail value or evaluate whether the property is worth keeping as a rental.
Selling: Hire a local agent who sells in that specific neighborhood. The commission (typically 5-6%) is almost always worth it. Agents with neighborhood expertise price more accurately, market to qualified buyers, and negotiate better than most first-time FSBO sellers. Price at or slightly below the top comparable, not at your cost basis. Buyers do not know or care what you paid.
The BRRRR alternative: If the property cash flows after a refinance, consider the BRRRR strategy instead of selling. You do a cash-out refinance at the post-renovation value, pull out most of your capital, and hold the property as a rental. The rent covers the mortgage and expenses. You keep the asset without tying up capital long-term. Before going this route, calculate your cap rate on the post-refi numbers to confirm the deal works as a hold.
Tax note: Flip profit on a property held under twelve months is taxed as ordinary income, not at the long-term capital gains rate. On a $44,000 profit, the difference between a 22% marginal rate and a 15% capital gains rate is roughly $3,000. If you are near the twelve-month threshold, the tax math may favor holding until the one-year mark before selling.
Frequently Asked Questions
How much money do you need to flip a house?
Most first-time flippers need $30,000 to $60,000 in liquid capital minimum, enough to cover a hard money down payment (typically 20-35% of purchase price), the rehab budget contingency that falls outside the hard money draw schedule, and six months of holding costs. Markets with lower purchase prices allow lower entry. Undercapitalization is the most common cause of failed flips; running out of money mid-rehab is far more costly than not starting.
What is the 70% rule in house flipping?
The 70% rule says your total acquisition and rehab costs should not exceed 70% of the property's after-repair value. The formula is: maximum purchase price = (ARV x 0.70) minus estimated rehab costs. The remaining 30% of ARV covers selling costs (6-8%), holding costs (2-4%), and your profit margin (15-20%). The rule is a screening filter, not a guarantee; deals that pass still need a full cost analysis.
How long does it take to flip a house?
The average flip in 2026 took 161 days from purchase to resale close, roughly 5.5 months. This breaks down as 30 to 45 days to close the purchase, 60 to 90 days of active renovation, and 30 to 45 days on market and in escrow. Markets with thin buyer demand can extend the sales period significantly. Model at least six months of holding costs even if you expect to move faster.
Is house flipping worth it in 2026?
Flipping is profitable in markets where the spread between distressed and retail pricing is meaningful enough to support the 70% rule. In high-cost coastal markets where distressed prices are already near retail, the math rarely works. In secondary markets with older housing stock and active retail demand (Midwest cities, parts of the Southeast and Sun Belt) the spreads remain workable. The profitability depends less on the market cycle and more on whether you bought correctly.
What is the biggest mistake first-time flippers make?
Overestimating ARV and underestimating rehab costs, in that order. Most first-time flippers use optimistic comparable sales (active listings rather than closed sales, or comps from a better neighborhood) and low-ball contractor estimates (one bid, no contingency). Both errors are front-loaded: you sign the contract based on wrong numbers, and then spend the next six months discovering what the real numbers are.
The Bottom Line
Flipping a house is a project management business with a real estate wrapper. The investors who do it consistently are not taking big risks; they are running disciplined processes: buying below the 70% threshold, budgeting with contingency, modeling full costs before they close, and pricing to the market when they sell.
The analysis phase is where most first flips fail. If your deal P&L only works when every number hits its best-case value, it does not work.
Try ProPilot free for 7 days.