How OSINT works for off-market real estate.
OSINT — open-source intelligence — is the practice of assembling a clear picture from information that's already public. In real estate, that means one thing: every off-market deal is visible in public records before it ever becomes a listing. Here's the method, end to end.
What's public is a lot
A county recorder's office holds the financial biography of every parcel: deeds showing who owns it, deeds of trust showing the loan type and origination date, tax assessments showing value and delinquency. The assessor knows the square footage, the build year, the owner-occupancy status. Code enforcement knows about the tall grass and the boarded windows. Probate courts know when an heir just inherited a house they never wanted. None of this is secret. It's public by law — sitting in databases and PDFs, waiting for someone to connect it.
One record is trivia. Hundreds of records, composed around a single parcel, is a story. OSINT is the discipline of reading the story before the listing agent does.
The signal stack
shinnslist runs hundreds of public-record signals against every parcel — each one a small, verifiable fact. The power is in the combination:
financing signals
Loan origination dates, FHA/VA loan fingerprints, lender patterns, equity estimates. This is how sub-4% assumable loans get flagged years before anyone thinks to sell.
motivation signals
Absentee ownership, tax delinquency, code violations, probate filings, pre-foreclosure notices. Distress leaves a paper trail long before it becomes a listing.
value signals
Assessment gaps, flood maps, well costs, mineral records, nearby development. The hidden upside — and downside — that never shows up in a listing description.
A worked example
Say you're hunting assumable mortgages. Here's how the signals compose into an offer you make first:
- Rate fingerprint. Deeds of trust originated between 2020 and 2022 with FHA or VA loan markers get flagged — that's the low-rate window where sub-4% loans live.
- Assumability check. FHA/VA fingerprints mean the loan is likely assumable. Conventional loans with due-on-sale clauses are filtered out.
- Equity estimate. Current assessment minus estimated remaining balance reveals the equity gap you'd need to cover — so you only chase deals where the gap is financeable.
- Motivation overlay. Absentee owner, a recent code violation, a tax bill two quarters late — any one of these suggests the owner would take your call.
- The offer, before the listing. You reach out with the math already done: their loan stays, your payment is locked, everyone wins. No bidding war, because there is no listing.
compose — hundreds of signals into one parcel story
output — an offer you make first, with the math already done
What this isn't
No hacking. No leaked data. No gray-area skip tracing, no purchased private files. If it isn't a public record — a deed, an assessment, a court filing, a permit — it doesn't go into the stack. That's a feature, not a limitation: public records are verifiable, defensible, and they never dry up. The moat isn't secret data. It's doing the boring work of connecting public data that everyone else is too lazy to read.
Exit strategy
Intel is only worth what it becomes. The exit for OSINT is the purchase: information converts to an off-market offer made before competition exists. Every signal in the stack is scored against one question — does this get a buyer closer to a signed contract? If a signal can't answer that, it doesn't ship. You make your money on the purchase, and the purchase starts with knowing what nobody else knows.
Hidden insight
Sellers don't price their own signals. The owner with the 2.9% FHA loan and the overgrown lawn doesn't think of themselves as holding a distressed asset with premium financing — they think of themselves as someone who needs to sell a house. Distress is public months before it becomes a listing. The listing is the end of the information advantage, not the beginning.
The story
The quants find what the buyer doesn't know. That's the whole pitch, and it's the whole product: hundreds of public-record signals, composed into a story about a specific parcel, delivered with the analysis already done — exit strategy, hidden upside, and why it's a match for what you said you want. The 3rd-property buyer isn't buying a house. They're buying peace of mind: all the math, all the digging, all the what-ifs, handled before they ever pick up the phone.
And the interface for all of it is a conversation. Tell the shinnslist chatbot what you want — "assumable loans under 4% near Denver," "absentee owners with tax trouble," "parcels with mineral rights" — and it mixes and matches the signals to find your parcels. Start the conversation.
educational content, not financial advice. all signals described are derived from public records. shinnslist is off-market only: we never cover on-market listings, where the competition has already priced the spread away.