The market dropped and I had not renovated yet, so the question was whether to push forward or stop
The assumption most people build a live-in flip around is that the market at least holds while they work. When it drops before the first wall comes down, you are suddenly solving a different problem, and the answer changes depending on how much you paid relative to what the street can support at the top of the range.
Take a house bought at 280k on a street where fully renovated comparables were selling at 360k at purchase. That 80k spread is the working budget before carrying costs. If values fall 8 percent across the board, those same comps are now printing at 331k. The spread compresses to 51k, and carrying costs on a 24 month hold, say 1,400 a month in taxes, insurance and interest on renovation financing, run 33,600. That leaves 17,400 before a dollar of renovation spend. A kitchen alone can exceed that.
The first thing that matters at that point is whether the drop is the street or the whole market. A market-wide correction usually means your purchase price also reflects a world that has since repriced, so your basis looks better than it feels. A street-specific drop, a big employer leaving, a new commercial use nearby, is structural and the renovation does not fix it.
The second thing is renovation scope. A live-in flip where you have not started yet gives you something a committed flip does not: the ability to stop renovating at a livable level and simply wait. You are paying to live somewhere regardless. If the monthly cost of staying is close to what renting an equivalent place would cost, you have not lost the carry, you have just converted it to housing expense. The loss only crystalizes at sale.
What tends to go wrong is when someone responds to the drop by cutting the renovation budget in a way that produces a house that is neither fully renovated nor fully original. That house sits. Buyers at the low end want a deal and buyers at the high end want move-in ready. A half-finished presentation gets neither group interested.
The version of this worth studying is a purchase at 265k with an 85k renovation budget, bought when the top of the street was 410k. Market falls 10 percent during month three of the project. Owner keeps the full renovation scope because the spread at the new ceiling of 369k still clears costs, finishes in month 19, lists at 359k and sells in six weeks. The drop hurt the number but did not kill the deal because the original spread was wide enough to absorb it. That is the underwriting question before you buy, not after the market moves.
What does your current spread look like between your basis and the top of your street's comparable range, before renovation costs come out?