The road standard changed mid review and I closed the file $193k down
This one got away from me because I trusted a comp set that was doing work I didn't understand.
62 acres, edge of a growth corridor, two road frontages, in a county that had been approving major subdivisions at a steady clip for years. Paid $540k, about $8,700 an acre. Plan was 14 lots of three to four acres each, retail $62k to $75k, gross around $940k. My engineer's early number for the road, drainage, and entrance work was $210k. I underwrote $260k to be safe and 22 months.
Where it went wrong: eight months into preliminary review, the county adopted an updated road and stormwater standard. My submittal was in, and it was not vested. The revised requirements pushed the internal road from a 20 foot gravel section to 24 feet paved with curb returns at the entrance, added a detention basin sized for a bigger storm event, and required a sight distance improvement at the intersection. The engineer's revised number came back at $520k. That alone is survivable at a lower lot count.
The sight distance improvement is what actually ended it. Meeting the new standard meant cutting into the bank on the adjoining parcel. The adjoining owner had no interest in selling a strip at any price I could justify, and there was no other point on my frontage that worked. I spent four more months and about $22k on alternative alignments before accepting that 14 lots was gone.
What I did instead: withdrew the major plat, did a four lot minor split off the existing frontage where no new road was required, and sold the residual 46 acres to a farm operator.
In: $540k purchase, $86k engineering, survey, legal and application fees, $78k of interest over 29 months, $19k of property taxes. $723k. Out: four lots for $268k, residual for $290k, less $28k of selling costs. $530k.
Down $193k, plus 29 months.
What I'd do differently. I bought the land outright with a 60 day due diligence period and no entitlement contingency, because everyone in that county told me approvals were routine. I'd structure the next one as a longer option or a contract contingent on preliminary approval, and pay the seller for that time rather than pay a lender for it. I'd also read the planning commission and board agendas going back two years before I offered, because the ordinance rewrite had been discussed in public for a while and I never looked. And I'd underwrite the exit comps as post-approval lots, which is what they were, instead of treating them as evidence that my approval would arrive.