See what's worth buying before the auction even matters.
az_leintool is a research platform for over-the-counter (state-CP) Arizona tax liens. Find, filter, and evaluate OTC positions across Maricopa and Pima counties — with redemption and foreclosure timelines tracked for you. Not legal or investment advice.
Why over-the-counter
You don't have to wait for the annual February auction to put money to work. Over-the-counter (state-held CP) liens are available year-round — and they're sourced from public county treasurer records. az_leintool turns those lists into a workspace: scored, mapped, and tracked, so you can triage an OTC list in minutes instead of tabs.
How it works
Three views over the same data — pick the one that fits the moment.
Every parcel in your active category or filter, dropped as pins — see where the opportunities cluster at a glance.
A dense, sortable triage surface. Rank an OTC list by the numbers that matter to you and work top-down.
One parcel, in depth: tax/CP status, projected economics, transaction history, permits, area context, and county-correct links to act.
Built for how lien investors actually work
Build and save your own filters. Your saved views are the workspace you come back to — not a one-size-fits-all list.
Track the parcels you care about and keep them in front of you as their status changes.
Automatic redemption-status and foreclosure-clock tracking against the three-year window — so a deadline never sneaks up on you.
Maricopa and Pima don’t buy the same way. Each parcel deep-links to the right place to check status or buy — we point you there, we don’t move your money.
Deeper detail-page data — projected ARV and repair-cost ranges (modeled estimates, not appraisals), construction permits, and full transaction history — is available on higher plans and sharpens as the platform's outcome history accrues.
Start researching Arizona OTC liens.
Free to explore. Upgrade when you're ready for deeper outcome history and modeling.
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