Fix and Flip Guide — A Real Operator's Playbook
End-to-end: how to find deals, how to underwrite them with real math, how to run the rehab without the budget eating your profit, how to sell, and the five ways flips actually die. Written by an operator running an active flip company alongside a 70+ unit rental portfolio.
By Cam Burke · May 17, 2026 · 10 min read
What Fix and Flip Actually Is
A flip is a short-cycle real estate operation: buy a distressed property below retail, renovate to a finish level the local market accepts, sell at the after-repair value, walk away with the spread. Six to nine months from purchase to closed sale. Profit per deal is lump-sum, taxed as ordinary income, and only hits the bank when you sell.
Flipping is operationally different from BRRRR even though they share the buy and rehab phases. A flip optimizes for retail-ready finishes and curb appeal — the property has to compete on the MLS against move-in-ready listings. A BRRRR optimizes for durable rental-grade finishes and refi-ready appraisal. Different finish levels, different scope of work, different exit strategy. Don't underwrite one and execute the other.
Who flipping works for: operators who can stomach lumpy income, who have liquidity to absorb a deal that runs over, who can manage contractors, and who treat it as a business — not a side project. It does not work for people looking for passive income; the work is anything but passive. It does not work for people who need a steady paycheck; flips pay on closing, not on hours.
When flipping works: when you have a tight buy box, repeatable contractor relationships, and a market with enough deal flow to keep one to four properties moving at a time. When the spread between distressed and retail in your market is wide enough to absorb 6–10% in transaction costs plus rehab plus your profit. When flipping doesn't work: in markets where every property already trades at retail (most coastal metros in a bull run), or in markets where retail demand has softened and days-on-market has stretched past 90.
Where flips win as a strategy: capital velocity. A clean flip recycles capital in 7 months. Two flips a year per $80k of operator capital produces $50k–$100k of taxable income — funds a rental portfolio, funds your operating costs, funds the next acquisition. Flips fund the rest of the business. They're rarely the destination on their own.
The free fix-and-flip calculator models the full deal — purchase, hard money, rehab, holding costs (time-weighted), sale costs (commission, closing, transfer tax), and base / best / worst case profit scenarios. Plug in the numbers, see if the deal pencils.
The MAO Formula
Maximum Allowable Offer is the most useful number in flipping. It tells you the highest price you can pay and still hit your profit target. The textbook version is the 70% rule:
MAO = (ARV × 70%) − Rehab
The 30% spread is supposed to cover hard money, holding, sale costs, and profit. It works as a first-pass filter on a list of 50 properties. It does not work as the final decision rule on the deal you're about to write a contract on, because it's too coarse for the real cost structure.
The honest version expands the spread:
MAO = ARV − Rehab − Holding − Sale Costs − Target Profit
Plug in actual numbers. Sale costs in most markets run 7–8% of ARV (3% buyer agent commission + 3% listing commission + 1–2% seller closing costs and concessions). Holding costs run $400–$800/mo across taxes, insurance, utilities, and HOA on a typical single-family. Hard money runs another $4k–$8k on a 6-month flip. Target profit is whatever you require to do this deal — for me it's $35k minimum on anything I take on, because below that the operational time exceeds the return.
When to deviate from the 70% rule: you almost always tighten it, rarely loosen it. Tighten when ARV comps are softer than you'd like, when rehab has more unknowns than usual, when the market is cooling and days-on-market is stretching, when hard money rates are at the high end. Loosen — slightly — when you have a buyer already lined up (a wholesale partner, a local agent with cash buyers), when the property is already mostly stabilized and rehab risk is low, when you're running cash and the HM line item disappears. Even when you loosen, the discipline is the same: write down the math, defend the number to yourself, walk if it doesn't hold.
For the formal definitions of ARV, MAO, hard money points, holding cost, and the rest, the investor glossary covers them in plain English. For an interactive calculator that handles all scenarios automatically, run the flip math here.
Finding Deals Worth Flipping
Sourcing is the bottleneck for most operators.
The two reasons flippers don't do more deals: they can't find them, or they're paying too much for them. Both come back to sourcing. A flip business is a sourcing business attached to a renovation business.
Where deals actually come from, in rough order of cost and effort: wholesaler dispositions (cheap, low effort, deals are usually picked over); MLS listings that have sat 60+ days (free, requires daily monitoring, harder in hot markets); direct-mail campaigns to absentee owners or pre-foreclosure lists (high effort, high cost, owns the seller relationship); driving for dollars + skip tracing (high effort, low cost, scales poorly past one person); foreclosure auctions (cheapest deals, highest risk — title issues, no inspection, cash only).
Each channel suits a different operator. A new flipper starting solo should start with MLS and one wholesaler relationship — concentrate on underwriting speed rather than sourcing volume. A scaling operator with $5k–$10k/mo marketing budget should layer direct mail on top. A team with 3+ people and 8+ deals/year should run all of it.
Sourcing tools: DealMachine for driving-for-dollars + skip tracing, PropStream for nationwide list-pulls (absentee, pre-foreclosure, tax delinquent, equity filters). Both compared against Value Add Calculator's downstream deal underwriting — sourcing tools find the property; you still have to run the math to know if it's a deal.
The metric that matters: deals offered to deals accepted to deals closed. If you're writing 20 offers a month and closing 2, your sourcing is healthy. If you're writing 3 offers a month and closing 0, your sourcing pipeline is too thin. Volume of underwrites matters more than perfection on any single one.
Scope of Work
Line-item or you're going to get cooked.
The scope of work is the contract between you and reality. Vague SOWs invite scope creep, change orders, and budget drift. Line-item SOWs hold contractors and your own future self accountable to a number.
A real scope is room-by-room, trade-by-trade, with material specs and labor allocations written down. Kitchen example: cabinets ($X), countertops ($Y, specify material), flooring ($Z, specify product), backsplash, hardware, paint, plumbing rough-in, electrical rough-in, fixtures, appliances, demo, install labor. Twelve line items, not "kitchen — $9,000." The granularity is the point. When the kitchen bid comes back, you can see exactly which line the contractor is marking up and negotiate it.
Contingency is non-negotiable. 10% on standard rehabs, 15% on properties built before 1970 or with visible plumbing/electrical concerns. The contingency exists because plumbing under slabs, wiring behind walls, foundation issues, and roof decking damage hide until demo. They're not risks — they're statistical certainties over the course of a flipping career. Budget for them or get blindsided by them.
Match finish to comps, not to taste. If the $200k comps in the neighborhood have laminate floors and builder-grade tile, you don't need engineered hardwood and marble. Over-finishing is the most common rookie mistake. The appraisal won't reward it; the buyer won't pay for it; you just bought yourself a more expensive rehab without a corresponding ARV bump.
The fastest way to a starting scope: take property photos, run them through the AI scope-of-work generator inside the Value Add Calculator, and get back a line-item starting point in minutes. I wrote up how that workflow actually runs — where it's strong, where you still need to verify in person. The AI doesn't replace a contractor walkthrough; it shortens the time to a defensible starting budget from days to minutes.
Hard Money and Financing
Every month over schedule has a price tag.
Hard money is the default funding source for flips. Short term (6–12 months), high rate (10–13% in 2026), points up front (1–3% of loan), and structured to lend on purchase plus rehab as draws. The cost is meaningful — typically $4k–$10k on a six-month flip — and most beginner pro formas understate or skip it entirely.
The math: hard money interest accrues on the principal balance each month. Purchase loan principal stays mostly constant. Rehab draws disburse incrementally against work completed, so on average about 50% of the rehab loan balance is outstanding across the project. Points come out of closing — typically 1–3% of total loan amount, paid up front. Add HM fees ($500–$1,500 for underwriting and processing) and you have the full cost.
On a $130k purchase + $45k rehab at 11% with 2 points over 6 months, you're looking at roughly $3,500–$4,500 of interest plus $3,500 of points plus $1,000 of fees — call it $8k–$9k all in. That number sits on top of the all-in cost. If your spread between MAO and the property's asking price doesn't absorb it, you don't have a deal. I wrote up the full HM cost breakdown in hard money cost on a 6-month deal — same math applies to flips.
How to shop hard money: get quotes from at least three lenders. Rates vary by 0.5–1.5%, points by 0.5–1.5%, fees by hundreds. Local lenders sometimes beat national platforms; private money from individual lenders can beat both if you've built a relationship. The cheapest paper isn't always the winner — terms matter (rehab draw speed, extension flexibility, prepayment penalties). A 100bps higher rate from a lender that closes in 14 days beats a lower rate from a lender that takes 30.
Schedule discipline pays in real money. Every month the project runs over budget, you pay another month of hard money interest plus holding. A flip that slips from 6 months to 9 months can lose $3k–$5k of profit to schedule alone. The flippers who scale aren't necessarily the ones with the lowest rehab costs — they're the ones who finish on time.
Managing the Rehab
Where the deal you underwrote becomes the deal you actually have.
GC vs. self-GC vs. in-house crew — three operating models, three sets of tradeoffs. Hire a GCand you trade 10–20% markup for single-point accountability. Best for new flippers and operators running multiple projects who can't be on site daily. Self-GC (you hire subs directly) saves the markup but requires you to actually run the job — sequence trades, schedule materials, handle change orders, deal with no-shows. In-house crew captures the most margin but requires steady deal flow to keep them busy; an idle crew is cash flow negative.
Whichever model you run, the financial discipline is the same: track expenses against the line-item budget weekly. Not monthly. Weekly. By the time a monthly review catches drift, you've already burned through the contingency on something you would have caught two weeks earlier. The full Value Add Calculator tracks budget vs. actual receipts on every line item — the receipt drops in, the line updates, the variance is visible at a glance.
Draw requests are the lifeblood of cash flow during rehab. Hard money lenders release rehab funds in stages tied to completed work — you submit photos and a scope of completed items, the lender approves, the funds release. Fast draws keep crews paid; slow draws stall projects and erode contractor relationships. The quality of your draw package matters: organized, photo-documented, line-item, dated. A clean draw clears in 3–5 days. A messy one takes 10–14.
Photo documentation is non-negotiable. Before photos, during photos, after photos on every room. Time-stamped, geo-tagged. They serve three jobs: draw requests to the lender, dispute resolution with contractors, and marketing assets when the property goes to market. CompanyCam is a popular photo-doc tool — solid for photos alone but stops there; the comparison breaks down where it overlaps with VAC and where you'd run both.
Project management software for renovations is its own category. Buildertrend is the most-cited heavyweight in the space and overshoots most flip operators by 10x — I wrote up the Buildertrend alternative comparison for operators running 3–15 flips a year who don't need full GC-grade scheduling software.
Selling the Flip
Days on market is a real cost.
The exit is where flip profit shows up — or doesn't. Selling well is its own discipline. Three things drive sale outcome: pricing, staging, days on market.
Pricing.Comp the recent solds tightly, not the active listings. Active listings are aspirational; recent solds are reality. Price at the comp ceiling if your finishes justify it; price 1–2% under comp midpoint if you want to drive a fast offer pile. Overpricing kills momentum — by week three, the property goes stale and you're negotiating from a weaker position. Most rookie flippers list at the top of comps because that's what they need to hit profit. The market doesn't care what you need.
Staging.Vacant houses sell slower and lower. Staged houses photograph better, show better, sell faster, sell for more. Staging cost runs $1,500–$3,500/month in most markets — pays for itself if it shaves two weeks off market time. Virtual staging is a cheaper alternative for MLS photos but doesn't help in-person showings. On premium product, real staging is worth the spend.
Commission and closing costs.Listing commission typically 3% (negotiable in slower markets, less negotiable in hot ones). Buyer agent commission 2.5–3%. Seller closing costs 1–2% of sale price for title work, transfer tax, prorated property tax, owner's title policy. Buyer concessions are a wildcard — in cooling markets buyers ask for $5k–$10k toward closing costs or interest rate buydowns. Bake that into your underwrite as a 1% contingency on top of standard sale costs.
Days on market.Every day on market is another day of holding cost and another day of hard money interest. A 30-day DOM flip and a 90-day DOM flip with the same sale price have materially different net profits. Real cost runs roughly $50–$100 per day of DOM on a typical flip — if you can shave 30 days off market time through better pricing, better staging, or better marketing, that's $1,500–$3,000 of recovered profit.
Negotiation discipline: have a number you walk at. The flip already happened — your sunk costs are sunk. If a buyer's offer plus reasonable counter still clears your minimum, take it. Holding out for $4k more while the next month of carrying costs eats $1,500 is bad math. Flippers who hold out for max price on every deal tend to leave more on the table than they capture.
The Five Ways Flips Actually Die
After enough deals, the failure modes cluster into five categories. They're the same five every time. Knowing them in advance is most of the protection.
1. Scope creep.The $40k rehab becomes $58k by month four. Every line item got "upgraded a little." The bathroom needed a full re-plumb. The kitchen layout got opened up because "it'll comp better." Fix: line-item SOW, contingency baked in, weekly budget reviews. Catch the drift in week three, not month four. I broke down a real $58k rehab line by line including where it went over.
2. Soft ARV.You underwrote $220k, the appraisal comes back at $208k. The buyer's lender won't fund the gap. You either drop price $12k or wait for a cash buyer that may not show up. Fix: conservative comps from the start. Pull recent solds within a half-mile and the last 90 days, not aspirational comps from the prior bull market. Build in a 3–5% appraisal buffer in underwriting.
3. Holding cost runaway. The flip timeline slipped from 6 months to 9. Three extra months of hard money interest ($1,500–$2,500), three months of taxes and insurance and utilities ($1,500), three months of opportunity cost on your capital. Roughly $4k–$6k of unbudgeted carrying cost on a deal you already budgeted tightly. Fix: aggressive schedule with weekly milestones; treat schedule slippage as a budget problem, not a calendar problem.
4. Contractor issues.The drywaller walked off. The HVAC sub disappeared for two weeks. The cabinet maker delivered three weeks late. Every flipper has these stories. Fix: stronger contractor relationships, pay on time, second-source critical trades, run a smaller crew of people you trust over a larger crew you don't. Cheap contractors are the most expensive contractors.
5. Market shift mid-flip.You bought when comps were $235k and rates were 6.5%. You list when comps are $222k and rates are 7.8%. Both happened in 2023 and parts of 2024. Fix: shorter cycle times, tighter margins built in (so a 5% market move doesn't erase profit), monitor your specific market monthly rather than relying on aggregate national data.
Fix and Flip FAQ
How much money do you need to flip a house?+
What is the 70% rule in house flipping?+
How long does it take to flip a house?+
Are house flips still profitable in 2026?+
What is MAO in real estate?+
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Underwrite your next flip with math that actually holds.
Real MAO. Real hard money. Real holding cost. Base / best / worst scenarios. The free calculator runs the deal — the paid tool runs the project, end to end.
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