Enter your purchase price, rehab budget, and after-repair value (ARV). You'll instantly see your projected profit, ROI, and the 70%-rule maximum offer — so you know the most you should pay before you ever make an offer.
Pre-filled with an example Phoenix flip — edit any field. Estimates are for screening; verify with your own comps and a contractor bid.
This calculator only works if your ARV and rehab estimates are right. DevelopmentIntelligence estimates both automatically — ARV from real comparable sales, rehab from regional construction costs — and surfaces the off-market Phoenix teardown and fix-and-flip deals the MLS never lists, already scored and ready to run through this calculator.
A profitable flip comes down to four numbers: what you pay, what you spend on the rehab, what it sells for (the ARV), and the costs of selling and holding it in between. This house flipping calculator combines them into the figures that actually decide a deal:
The 70% rule is the classic house-flipping guardrail: never pay more than 70% of the after-repair value, minus your rehab costs. In other words, MAO = (ARV × 0.70) − rehab. That 30% spread is your buffer — it covers selling costs, holding costs, financing, and your profit. If the asking price is above your MAO, the deal is telling you to negotiate or walk. The calculator flags this automatically: green means you're at or below the 70% rule with a healthy margin; amber means you're over the rule or the margin is thin; red means the deal loses money at these numbers. (When rehab tops 70% of ARV the rule no longer applies, so the calculator says so instead of showing a negative max offer.)
ARV is what the home is worth after the renovation, and it's the single most important input — get it wrong and every other number is wrong. The right way to estimate it is with recently sold comparable properties ("comps"): similar size, age, and condition, sold in the last few months within about a mile. Average their price per square foot and apply it to your renovated home. This is exactly what DevelopmentIntelligence's comps engine does automatically for every parcel in a market, so you're not guessing.
For a screening number, estimate rehab by scope and square footage: a light cosmetic refresh runs far less per square foot than a full gut. Regional labor and material prices matter too — the same scope costs more in some metros than others. Our regional cost model prices a rebuild or renovation per parcel using current construction costs, but for a real budget always confirm with a contractor walkthrough and bids.
A calculator tells you whether a deal works. It doesn't find the deal. That's the real bottleneck for flippers — sourcing properties priced below their MAO before everyone else does. DevelopmentIntelligence scores every parcel in your market for teardown, value-add, rental, and commercial upside from public county data, then hands you the mispriced, often off-market ones — with the ARV, rehab, and deal math already filled in. Browse scored Phoenix value-add deals →