5 deal killers that don't show up in the listing

The offering memorandum is a sales document. That isn't a criticism — it's a job description. Its job is to present the asset at its best, and it does that job by being selectively silent. It will never volunteer the cracks in the foundation, the 22-year-old roof, the addition built without a permit, the open fire-code violation, or the lien sitting on title.

Here's the part that matters: you inherit every one of them at closing.Real estate doesn't work like buying a used car, where undisclosed defects are the seller's legal problem. Open violations, unpermitted work, and recorded liens transfer with the property. These five deal killers hide in the building itself — and in the public records around it — and each one is findable before you sign.

Settlement and structural issues are the most expensive class of surprise in real estate: foundation underpinning, slab repair, and load-path corrections routinely run into six figures, and unlike cosmetic problems they cannot be deferred — they compound. A building that has moved keeps moving. The OM quietly leaves all of this out, and the listing photos are framed to help it.

But structural problems leave a paper trail long before they leave a visible crack. Past permits for foundation work, engineering inspections triggered by complaints, and repair histories all live in city records — a building that had piers installed in 2017 is telling you something about what the soil under it does. PropHunt checks inspection signals and the permit history for structural red flags, so a quiet six-figure problem shows up as an explicit flag on the deal instead of a line item in your second-year budget.

A roof has a service life of roughly 20–30 years depending on the system; commercial HVAC plants, 15–20. A 22-year-old roof and a tired HVAC plant aren't maintenance items — they are capex bombswith a lit fuse, and replacing both on a mid-size commercial building can erase several years of cash flow. The listing will call this "well-maintained with some deferred maintenance," which is the OM's way of pricing the fuse at zero.

The analytical move is simple: compare the remaining useful lifeof the major systems against the capex reserve the deal actually budgets. If the roof has three years left and the pro-forma reserves $250 per unit per year, the deal is underwriting a fantasy — the shortfall lands on you, in cash, at the worst possible time. PropHunt weighs the remaining useful life of major systems against the capex the deal actually budgeted and flags the gap, which turns "some deferred maintenance" into a number you can subtract from your offer.

That garden-level "bonus unit" adding $18K a year to the rent roll? If it was built without permits, it isn't income — it's liability wearing income's clothes. Unpermitted square footage generally can't be financed and can't be insured: lenders won't count its income in underwriting, insurers can deny claims that touch it, and the city can order it demolished or retroactively permitted at your expense. And because the violation attaches to the property, you inherit it the moment you close.

The tell is a mismatch between what the listing claims and what the city has on file. A building marketed as 24 units sitting on a permit history that only ever describes 22 is a question that needs answering before — not after — your earnest money goes hard. PropHunt cross-checks the building against city permit records, so the gap between marketed square footage and legal square footage surfaces as a flag while you can still reprice the deal around it.

Fire-safety and building-code violations are public enforcement actions, and they don't evaporate when the deed changes hands — open violations transfer to the new owner at closing, along with the fines that accrue on them and the compliance deadlines attached to them. An open fire-code violation can mean sprinkler retrofits, panel upgrades, or occupancy restrictions, and the city doesn't care that the previous owner was the one cited.

Sellers know this, which is why buildings with open violations so often come to market — it's cheaper to sell the problem than fix it. The violations themselves sit in city enforcement databases: what was cited, when, whether it was cured, and what's still open. PropHunt pulls the violation history before you sign, so "sold as-is" reads as the itemized list it actually is rather than a vibe.

A lien is someone else's claim on your building. Tax liens, mechanic's liens, judgment liens — each one is recorded against the property, not the person, and each one survives the sale unless it's cleared at closing. Unresolved permits and recorded liens can freeze a sale outright(your lender won't fund against clouded title) or quietly eat your returns when you're forced to settle them to refinance or exit.

Title insurance catches much of this — at the end of the process, after you've spent weeks and real money on diligence. The better sequence is to know about the cloud before you're emotionally and financially committed. Liens and open permits are recorded in public data, which means they're checkable on day one. PropHunt flags them while you can still walk away — which is the whole point: every deal killer on this list is only a killer if you find it after closing. Found early, each one is just leverage.

Most deal analysis stops at the numbers — DSCR, cap rate, comps. But the five killers above live in the buildingand the public records around it, which is why deals that pencil beautifully still blow up. A full underwrite reads both layers, plus the ones this post didn't cover:

• The numbers: debt coverage, in-place yield, rent roll vs. trailing actuals.
• The building: structural signals, system life, permits, violations, liens.
• The context: location risk, environmental exposure, regulatory posture, market sentiment.

These five checks are a subset of what PropHunt automates. Ten specialist AI agents x-ray the numbers, the comps, and the building — drawing on city open-data records across 20+ sources — in about 30 seconds, with a confidence level on every read so you know which flags are firm and which are worth a closer look.