My first commercial tie-up died on a rollover schedule I never asked for
14,000 sf flex building, four tenants, seller's rent roll showed $118k NOI. He wanted $1.35M, call it an 8.7 going in. I got it at $1.31M with a 20 day inspection and $5k that went hard on day 15. Figured I'd assign around $1.40M and make my first fee.
The first buyer who actually looked pulled the leases (I'd only had the rent roll, which was a spreadsheet the seller's bookkeeper made). Two of the four tenants were month to month. The biggest one, 5,200 sf, expires in seven months at $11.50/sf while the broker's own comps in that submarket were $8 to $9. No TI or leasing commission reserve anywhere in the numbers.
He re-ran it at market rent, $6/sf of TI on the rollover space, four months of downtime, and got to about $94k of NOI. At the 9.25 he wanted he was at roughly $1.02M. Everyone else after him landed in the same zip code. Seller wouldn't move off $1.31M because he'd been told 8.7 by a broker who used the same spreadsheet.
Cost me the $5k plus about $900 in legal review and two trips. Six weeks.
Next time I don't let earnest money go hard until I've read every lease and amendment myself, and I underwrite market rent first with in-place as the upside case.