Pre-foreclosure begins when a lender files a Notice of Default (NOD) or Lis Pendens — the formal public filing that the borrower is behind on payments. The owner still holds title; no auction has occurred. The typical pre-foreclosure window runs 3-6 months in non-judicial states (California, Texas) and 6-18 months in judicial foreclosure states (Florida, New York, Illinois), where the foreclosure must go through the court system.

During this window, the owner can: (1) cure the default (catch up on payments), (2) refinance, (3) execute a short sale (bank accepts less than owed), (4) deed in lieu of foreclosure, or (5) sell the property outright if equity exists above the debt. As a buyer, your target is option (5) — and the seller's motivation is urgency, because option (6) is the auction where they lose everything and their credit is wrecked.

The short sale alternative: when the owner owes more than the property is worth (underwater), a pre-foreclosure sale requires lender approval — making it a short sale. Short sales take 60-120+ days to close due to lender review. They are a legitimate path to a discounted property, but the timeline is unpredictable and the lender sets the price floor.

NOD filings are public record, filed with the county recorder/clerk. Several sources aggregate them:

• PropertyRadar, ATTOM Data, CoreLogic: professional-grade pre-foreclosure data by county; subscription-based; used by investors and agents
• RealtyTrac, Foreclosure.com: consumer-accessible pre-foreclosure listings with varying data freshness
• PACER (judicial states): federal and state court filings for judicial foreclosure states
• County recorder website directly: free, current, and authoritative — search recent NOD/lis pendens filings by date

The practical approach: identify the pre-foreclosure address, then research the owner's contact information through county property records, skip-trace services, or a licensed agent's MLS/title system access.

Approach matters as much as discovery in pre-foreclosure:

• Written letter (first contact): a respectful, non-pressure letter introducing yourself as a buyer — not a foreclosure rescue company — stating your interest and phone number. No urgency language, no threats.
• Agent-to-owner contact: a licensed agent can approach the owner professionally; many distressed sellers respond better to an agent than to an investor
• Never: doorstep pressure, multiple letters per week, rescue-company language. Foreclosure consultants who charge upfront fees for "saving" distressed homeowners are regulated as predatory in most states

The transaction itself: if equity exists (property worth more than the debt), a traditional purchase is possible. Get a title search immediately to identify all liens, including junior liens (second mortgages, HELOCs, tax liens, mechanics' liens) that must be paid from proceeds. Traditional financing works if the title can be cleared and the property condition supports appraisal.