The short answer
Fix and flip lending is short-term, asset-based and priced on the project rather than on you. Lenders underwrite the purchase price, the renovation budget and the after-repair value, usually releasing renovation money in draws against completed work. The most common failure is an optimistic renovation budget rather than an optimistic sale price.
Fix and flip financing has almost nothing in common with a residential mortgage, and investors coming from a homeowner background consistently misjudge it. A mortgage is long-term debt underwritten primarily on the borrower. Flip financing is short-term debt underwritten primarily on the project.
That difference runs through everything: the timeline, the documentation, how money is released, and what actually gets you declined.
The three numbers that decide it
- Purchase price. What you are paying, and whether it represents genuine value against comparable sales.
- Renovation budget. Itemised, realistic, and ideally supported by contractor quotes rather than estimates.
- After-repair value. What it sells for when finished, supported by comparables that actually resemble the finished product.
Lenders size the facility against these, typically lending a proportion of purchase and a proportion of renovation cost, with the after-repair value setting the ceiling. Your credit and experience affect terms and confidence; the project affects whether there is a deal at all.
Draws, and why they surprise people
Renovation money is almost never handed over at closing. It is released in draws against completed, inspected work. That means you fund each stage first and get reimbursed after, which requires working capital of your own that many first-time flippers have not planned for.
This catches people out constantly. Budget for the gap between doing the work and being reimbursed, in the same way a contractor budgets for the gap between mobilising and being paid. Running out of cash between draws is the most common way a viable project stalls.
Where Treasure Valley projects go wrong
Not usually on the sale price. Investors tend to be reasonably disciplined about comparables and cautious about what a finished house will fetch. They are far less disciplined about what it costs to get there.
Renovation budgets go over for predictable reasons: what is found once walls are open, trade availability in a market where contractors are busy with new construction, permitting timelines, and material lead times. Every one of those costs money twice — once directly, and again in carrying costs on short-term debt while the project sits.
Build a contingency into the budget and into the financing conversation. A lender who sees a contingency reads it as competence; one who sees a budget with no slack reads it as inexperience.
The exit is part of the underwriting
Short-term financing has to be repaid by something, and the lender will want to know what. Selling is the obvious answer. Refinancing into a rental hold is the other, and it is a different conversation that should happen before you start rather than when the term is running out.
Investors who intend to keep the property should say so at the outset, because the financing path is different and switching late is expensive.
Experience changes the terms
A first project is financeable, and it is financed on less favourable terms than a fifth. Document everything you complete: before and after, actual costs against budget, timeline, sale price. A track record is the cheapest thing you will ever build, and it directly reduces what your next project costs to finance.
For anyone coming into flipping from a real estate background, that experience counts more than people expect. Say it clearly rather than assuming a lender will infer it.
Common questions
How much deposit do I need for a flip?
Can I finance a flip with no experience?
What happens if the project runs long?
Can I use a fix and flip loan for a rental property?
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