u/tglotzb

TLDR: Curious if everybody is still grinding through Excel or using personal tools they're building

I’ve been digging into more flip deals recently and I keep running into the same issue of having to manually grind through Excel spreadsheets

I talked to a few investors and everyone seems to have their own spreadsheet with slightly different assumptions, but no one feels super confident in them.

What’s been tripping me up:

• Rent growth / exit assumptions seem overly optimistic in a lot of deals
• Rehab estimates swing wildly (especially on older homes)

Out of frustration I actually built a quick tool for myself that:

• standardizes assumptions (vacancy, rehab ranges, etc.)
• lets me plug in a deal and run multiple scenarios (cosmetic vs full gut)
• gives me a quick “would I actually buy this?” answer

How are you all underwriting flips today?

• Still Excel?
• Rules of thumb?
• Something more systematic?

And what’s the piece you trust the least when you run a deal?

If people are interested I can share an example of how I’m breaking deals down now, would love to sanity check it against how others are doing it.