Fix-and-flip financing: the loan, the carrying-cost clock, and the exit

What a flip loan actually is

A fix-and-flip loan is not a small mortgage; it is a different instrument. These are business-purpose loans — credit extended primarily for a commercial purpose, which Regulation Z generally exempts from its consumer-credit coverage — made by private, hard-money, and specialty lenders for terms measured in months. Underwriting centers on the deal: purchase price, renovation budget, the after-repair value, and your track record, more than your tax returns. Interest-only payments during the term are typical, and origination costs are front-loaded.

Structure follows the project. The lender typically funds a share of the purchase at closing and holds the renovation budget in escrow, releasing it in draws as an inspector verifies completed work. That draw structure means you float each stage of the rehab before reimbursement — a cash flow reality first-time flippers consistently underestimate.

The carrying-cost clock

From the day you close, the project burns money independent of any progress: loan interest, property taxes, insurance priced for a vacant property under renovation, utilities, and in Florida often an HOA. Every week of permit delay, contractor slippage, or slow listing activity adds a week of that burn against a sale price that does not rise to match.

Model it as a monthly number before you offer. Hypothetically: if a project carries several thousand dollars a month in combined interest and holding costs, a two-month overrun consumes a five-figure slice of expected profit — and two-month overruns are ordinary, not exceptional. Time is the flip's real currency; the renovation budget merely buys the materials. Experienced flippers pad the timeline, not just the budget, and price both pads into the maximum offer.

Exit risk: the sale you haven't made yet

A flip's entire return is realized at exit, and the exit is exposed to everything: the market's direction during your hold, the appraisal your buyer's lender orders, and the financing rules that govern that buyer. If your likely purchaser uses FHA financing, HUD's Single Family Housing Policy Handbook restricts resales occurring shortly after acquisition and layers requirements on quick resales — timing rules that can shape when you list and to whom you can realistically sell. Check the current provisions while planning the exit, not after an offer arrives.

The disciplined protection is a second exit: underwrite every flip as a rental too. If the property can be leased and refinanced at numbers that survive, a soft market turns a failed flip into an accidental BRRRR instead of a forced loss. If it cannot — if the deal only works as a quick sale at the projected price — you are carrying the full exit risk with no floor under it.

The numbers that decide the offer

Flip math runs backward from the after-repair value, and every input deserves hostility.

• ARV from sold comparables you verified yourself — not the listing agent's optimism and not an average of dissimilar houses.
• Renovation budget from a scoped, contractor-priced estimate with a contingency line — surprises in older Florida housing stock (roofs, electrical, plumbing, moisture) are the rule.
• Carrying costs as a monthly burn multiplied by a padded timeline, including the loan's interest and fees.
• Transaction costs on both ends — acquisition closing costs, and at exit the commissions, seller concessions, and Florida closing customs that come out of the sale price.
• Profit margin sized to the risk actually taken; a flip projected to net a sliver has no room for a single missed assumption. All of it hypothetical until proven — flipping offers no assured return, and no lender or broker can promise one.

Where we fit

Wholesale Mortgage Lending is a mortgage broker. On the front end we arrange short-term renovation and business-purpose financing for acquisition and rehab; on the back end we arrange the exits — the buyer's mortgage when you sell, or your own DSCR or conventional refinance when you keep it. Because we see both ends, we can pressure-test a project's financing plan before you commit: what the acquisition money costs, what the refinance takeout requires, and where the seasoning and appraisal rules will bite. We are not investment advisers or contractors, and we do not underwrite your rehab budget — but we can make sure the financing on both ends of the plan is real before your capital is.