How wide can a rehab range be before the deal becomes too uncertain?

Question

When analyzing a deal, I’m starting to think the repair number itself matters less than the width of the repair range.

A $50k rehab estimate is one thing. But a $40k–$60k range feels very different from a $25k–$85k range, even if the midpoint is similar.

Same ARV. Same purchase price. Completely different risk profile.

So I’m curious how other investors think about this during deal analysis. At what point does the repair range become too wide for you to trust the MAO?

Example:

• Light cosmetic: $20k–$30k
• Moderate rehab: $45k–$65k
• Heavy unknowns: $70k–$120k

Would you still make an offer on all three if the conservative MAO works? Or does a wide range make you pause because it means the scope is not clear enough yet?

I’m especially interested in how people handle this with older houses where the inspection report lists a lot of “monitor,” “recommend further evaluation,” or “end of useful life” notes. Those don’t always become repairs, but they can change the way the deal should be priced.

Do you underwrite from the midpoint, the high end, or some kind of risk-adjusted number?

Tyler Ruppert · Answer

Spreadsheet guy here, not a contractor, but I'd underwrite from the high end every time. If the deal still works at the top of the range, you've already got your safety margin for when the scope comes in wrong. If it only works at the midpoint, the range is telling you the scope isn't clear enough to offer on yet. I'd tighten it in the option period or pass.

Richard Golding · Answer

If you are underwriting using a wide repair range with a massive gap between the low and the high end, you do not actually have a budget yet. You just have an admission that you do not know what is happening behind the walls.

A wide range completely castrates your Max Allowable Offer (MAO). If you calculate your MAO using the hopeful midpoint of a $25k–$85k range, you are practically guaranteeing that a single systemic surprise will wipe out your entire equity margin before you even finish drywall. In this game, a wide variance isn't just a number on a spreadsheet it is a direct reflection of missing information.

When an inspection report is packed with notes like monitor or end of useful life, you have to stop treating those items as future variables. You price them as immediate, worst-case liabilities right now. If the roof is twenty years old but not actively leaking, you do not write down a $0 repair cost and hope it lasts. You budget the full $12,000 replacement into your upfront numbers or you walk away from the asset.

Never make a binding, non-contingent offer on a property with a massive repair variance. Use the wide range as a red flag to slow down. You use your option period to bring in specialized trades to scope the sewer and pull the electrical panel and check the heat exchanger so you can turn that wild $60k variance into a tight, predictable $5,000 window. If a seller won't give you the time to clear up the unknowns, you underwrite exclusively from the brutal high end of the range and let the discount cover your risk.

Jason Wray · Answer

Ali,

Never Underwrite a property on your own build a team of seasoned professionals like an Agent, Banker, GC, PM.  The term underwrite essetially should stay as a term used within the Bank or Investor.  Your asking a loaded question in regard to the Math.  Your ARV is going to fluctuate if you do not identify the actual "Cost" difference between a Repair, Renovation or Replacement of a homes needed item.

The range could be due to a "Rookie Agent" or could be as confusing as a range to identify the Quick fix, or Permanent repair or Replacement option.  As a Federal Banker who looks at several deals a day I would say it differs with every investor based on the actual property.  Some people just want to buy and get the property "Rent ready". While others want to sink thousands into cosmetic garbage that they "Think" an appraiser will award them a higher value (Never Going to happen).

Its not just about the range of repairs its about ARV and Cash flow whats the NOI?  The NOI could be $20K a year that allows the buyer to recoup the up front costs within a 12, 24 or 36 month time period making it worth the cost.  Especially if the ARV allows you to pull the cash back out within the first 6-12 months.

I would tell you to evalute the costs based on more than the purchase price and ARV.  Look at the ability to "value ad" and decide how long it will take to recoup the initial Down payment, Rehab or Reno costs.  Then look at Rent styles LTR, STR, MTR or can the Lot fit an ADU or Carriage or Mother in law suite.