Short version: once you are running more than one flip a year, you start wondering whether a fix and flip line of credit is smarter than closing a fresh loan on every deal. A line of credit gives you a pre-approved pool of capital you can draw against as you find properties, which is faster and cleaner than starting an application from zero each time. A deal-by-deal loan is underwritten to one specific property and closes once. Both fund flips. They just meter your capital and your speed very differently, and the right choice depends on your volume, your experience, and how much certainty you need at the offer table.
This guide walks through how each structure actually works, the real math on cost and speed, and a simple way to decide which one fits where you are right now.
What a fix and flip line of credit actually is
A fix and flip line of credit is a revolving or pre-approved facility that a lender extends to you as a borrower, not to a single house. The lender underwrites you once, sizes a maximum you can have outstanding at any time, and then lets you draw against that limit to fund individual purchases and rehabs as you go. When you sell a flip and pay off that portion, the capacity frees back up for the next deal. It behaves more like a business credit line pointed at real estate than like a mortgage.
The appeal is speed and certainty. Because you are approved before you find the property, you can move on a deal the day it appears instead of waiting on a fresh underwrite. That matters most on competitive or time-sensitive purchases, where the ability to close fast is the whole edge. A borrower with an established line can write an offer knowing the capital is already committed, which is a real advantage over a buyer who still has to shop financing.
What a deal-by-deal loan does differently
A traditional fix and flip loan is underwritten to one property. The lender looks at the specific purchase price, the as-is value, the rehab budget, and the after repair value, and sizes leverage to that deal. It closes once, funds that project, and gets paid off when the house sells. Every new flip means a new application, a new appraisal, and a new closing.
That sounds slower, and in raw speed it usually is, but it buys you two things. First, each deal is underwritten on its own merits, so a strong property can carry leverage a blanket view of you as a borrower might not extend. Second, every deal is isolated. The loan lives and dies with that one house, and nothing about it reaches your other projects. For a newer investor, that isolation is worth more than the convenience of a standing line. We break down the full cost of a single closing in our guide to fix and flip closing costs.
The real difference is speed versus flexibility per deal
Here is the tradeoff in one sentence. A line of credit optimizes for speed and repeatability across many deals. A deal-by-deal loan optimizes for maximum leverage and clean isolation on each individual deal. A high-volume operator who does eight or ten flips a year and competes on close speed will usually value the line. An investor doing two or three a year, or still building a track record, is often better served getting each deal underwritten on its own strength.
Pricing is not always dramatically different between the two, because both are asset-backed short-term money. What changes is the friction. With a line, the marginal cost of doing your next deal is low, because the heavy underwriting already happened. With deal-by-deal loans, you pay the full setup on every project, but you also get a fresh, deal-specific leverage decision each time. Lenders tier borrowers by track record, and a line is usually a product you graduate into rather than start with, which we cover in our guide to experience requirements.
A worked example on cost and pace
Put numbers on it. Say you plan to do four flips this year, each with a purchase price around 180,000 dollars and a rehab budget around 45,000 dollars, so about 225,000 dollars of total project cost per deal. On a deal-by-deal loan at roughly ninety percent of purchase and one hundred percent of rehab, the lender might fund about 162,000 dollars of the purchase plus the 45,000 dollars of rehab, leaving you to bring roughly 18,000 dollars down plus your closing costs on each project. You repeat that underwrite and that closing four times across the year.
Now run the same four deals on a line of credit sized at, say, 500,000 dollars outstanding. You get underwritten once. When deal one closes and sells, its balance clears and the capacity returns for deal three, and so on, so you can keep two projects running against the line at a time and recycle the capital as each sells. The leverage on any single draw is similar, but you skipped three full applications and three fresh appraisals of yourself as a borrower. If closing two weeks faster wins you even one deal you would otherwise have lost, the line has already paid for its convenience. If you are only doing two deals a year, that math never gets a chance to work, and the simpler deal-by-deal path wins.
Where a line of credit can bite you
A line is not free of risk, and the risk looks a lot like the risk in pooled portfolio financing. Because the lender is extending capacity against you rather than one isolated house, your projects are more connected than they would be under separate loans. A stall on one flip ties up capacity you were counting on for the next, and a lender watching your whole line will react to trouble on any single project. If you draw the line to its ceiling and two exits slip, you can find yourself unable to fund the next acquisition at exactly the moment you found a good one. The same connectedness that makes a line efficient makes it less forgiving. That is the same tradeoff we describe in our guide to cross collateral and blanket loans, and it is why isolation has real value while you are learning.
There is also discipline risk. A standing pool of capital makes it easy to say yes to a marginal deal simply because the money is sitting there. Deal-by-deal underwriting forces a fresh, sober look at every project’s numbers, and that friction quietly screens out weak deals. Plenty of investors do better work precisely because each loan makes them re-prove the deal.
A simple way to decide
Ask three questions. First, what is my real annual volume? If you are doing five or more flips a year and competing on speed, a line starts to earn its keep. If you are doing one to three, deal-by-deal financing is almost always the cleaner choice. Second, is my track record deep enough that a lender will extend a borrower-level facility on good terms? Lines are usually a graduation, not a starting point. Third, do I have the reserves and the exit discipline to manage connected exposure, so one stalled project does not freeze my capacity? If any of those answers is shaky, take the isolation of separate loans.
None of this is about which product is more advanced. It is about matching the financing to how you actually operate. A newer investor who runs deal-by-deal loans cleanly is in a far stronger position than one who reached for a line before the volume justified it. As your track record and your deal flow grow, the line becomes a genuine accelerator, and the move from one structure to the other is a natural step rather than a leap. Either way, every deal still rests on the same fundamentals of a defensible after repair value and a term sheet you fully understand, which we cover in our guide to reading a term sheet.
The bottom line on lines versus deal-by-deal loans
A fix and flip line of credit trades a little isolation for a lot of speed and repeatability, and it is a strong tool for the higher-volume operator who competes on close time and has the track record to earn good terms. A deal-by-deal loan trades some convenience for maximum deal-specific leverage and clean separation between projects, which is exactly what a newer or lower-volume investor should want. Neither is universally better. The right one is the one that matches your volume, your experience, and your appetite for connected risk.
Trying to decide whether a line or separate loans fit your pace? Send your volume and your goals through our contact page or call 412-990-2941, and we will tell you straight which structure fits where you are. You can see our full short-term options on the fix and flip and bridge loan page, and model any deal on our DSCR deal calculator.
FMC Capital is a Pittsburgh-based licensed mortgage brokerage, NMLS #1840537. This article is for educational purposes only and is not a commitment to lend, an offer of credit, or financial advice. Fix and flip, bridge, and line of credit terms, leverage, and qualification standards vary by lender, project, borrower experience, and market at the time of application.