LienScout Pro is not an auction list. An auction list tells you a parcel is being sold. Underwriting answers the only two questions that decide whether you keep your capital: should I bid on this property, and what is the maximum bid that still makes economic sense?
This page publishes the methodology in full. It applies across 25 active counties in five states (AZ, CA, FL, GA, TX), whether the sale is a tax lien, a tax deed, or a redeemable deed.
Every defensible bid follows the same sequence. Skip a stage and the number at the end is a guess wearing a decimal point.
What am I actually bidding on?
Parcel identifier, situs, legal description, land versus improvement, assessor characteristics, and whether the record you are bidding on matches a real, identifiable parcel on the ground. A tax-sale list line item is a claim about a parcel — not proof of one.
How does this jurisdiction's tax-sale mechanism work?
Lien, deed, or redeemable deed. What the winning bidder receives, what redemption window applies, what the statutory return mechanism is, who conducts the sale, and how the sale is scheduled. LienScout carries county-level verified jurisdiction facts with the statute, source, and read date behind each one.
What could impair value, ownership, access, marketability, or return?
Flood zone, natural hazards, wetlands overlap, environmental contamination proximity, code enforcement, permits, recorder liens, and access indicators — each carried at its real coverage status rather than as a blanket promise. Where a layer has not resolved, it is reported as unknown, not as a clean result.
What is the property realistically worth?
Assessor values, market context, condition signals, and comparable activity build an estimate of realistic value in its current condition and after any planned work. This is an underwriting estimate to support a bid decision — it is not an appraisal and does not replace one.
How does this investment actually return capital?
A tax lien usually returns capital through redemption at a statutory rate or penalty, with foreclosure as the fallback. A tax deed returns capital through resale, rental, or hold. A redeemable deed can go either way, and the redemption premium is a flat statutory figure — not an annualized interest rate. The exit determines which costs are real.
What does owning this actually cost?
Bid amount, known surviving obligations, rehabilitation, carrying costs during the redemption or resale period, legal and title work including any quiet-title action, plus transaction and selling costs where a resale exit is assumed.
What return does this risk deserve?
Required profit, required equity cushion, or required yield. Two investors can underwrite the same parcel correctly and reach different maximum bids because they price risk differently. The requirement is an input you set — not a number we impose.
At what price does the deal stop working?
Maximum Bid is the highest modeled acquisition price at which the deal still satisfies your value, cost, exit, and return assumptions. Everything discovered upstream pushes this number in one direction or the other.
Bid, review, or pass?
BID when the modeled ceiling clears the expected clearing price. REVIEW when a material input is unknown, stale, or unresolved. PASS when the economics or risk profile fail. These are analytical outputs of your own assumptions, not investment advice.
The county's minimum bid is a recovery figure: delinquent taxes, interest, and administrative fees. It reflects what the taxing authority is owed. It carries no information about condition, surviving obligations, resale cost, or the return you require. Maximum Bid is the highest modeled acquisition price at which the investment still satisfies your assumptions and return requirements. Everything discovered during underwriting moves it.
| What underwriting finds | Effect on maximum bid |
|---|---|
| Higher rehab estimate | Lower Maximum Bid |
| Higher selling and transaction costs | Lower Maximum Bid |
| Obligations that survive the sale | Lower Maximum Bid |
| Lower expected value | Lower Maximum Bid |
| Higher required return | Lower Maximum Bid |
| A material unknown input | REVIEW — not a falsely precise number |
Illustrative only. These figures are made up to show the shape of the arithmetic. They are not tied to LienScout Pro's production calculators, and they are not a recommendation.
If the county's minimum bid on that parcel were $22,000, nothing about that number makes $22,000 the right bid — and nothing makes an arbitrary percentage of value the right bid either. The ceiling here is $73,000 because that is where the modeled deal stops satisfying the assumptions above. Bidding past it does not buy a worse deal; it buys a deal that no longer meets the investor's own requirements.
The most expensive underwriting error is treating a missing input as a clean one. An unresolved lien search is not "no liens." A parcel with no coordinates is not "no access problem." A stale value is not a current value. LienScout Pro carries the confidence of an input alongside the input itself, and an unresolved material input pushes a deal toward REVIEW rather than toward a falsely precise number.
Deal Score answers which properties deserve attention. Underwriting answers should I commit capital, and at what maximum price. Screening never decides a bid; it only decides where to spend diligence.
A 0–100 prioritization signal that orders an auction list so diligence time goes to parcels that deserve it.
Scoring methodology →What due diligence actually found on the parcel, with the source behind each finding and explicit gaps where a layer did not resolve.
Risk layers covered →Wetlands overlap, contamination-site proximity, FEMA flood zone, and the FEMA National Risk Index hazard composite.
Environmental risk library →Modeled return under the jurisdiction's actual return mechanism — statutory interest, flat redemption premium, or resale margin.
Lien vs. deed economics →Compares how capital comes back under redemption, resale, rental, or hold — and which costs each path actually incurs.
How it works →The culmination: the modeled highest price at which the deal still satisfies your assumptions and return requirement.
Plans and trial →Access Risk Screening flags properties with incomplete or suspicious access indicators for additional review. Current screening does not establish legal ingress or egress rights. Missing coordinates, a missing situs address, or a failed parcel lookup mean the evidence is insufficient — they do not mean a parcel is landlocked. Those cases are reported as UNKNOWN or NEEDS REVIEW.
A stronger conclusion about legal access requires documentary evidence: recorded easements, plats, deeds, or title work. Our planned spatial work — parcel geometry, road proximity, apparent frontage — will improve the screen, but geometry alone will never be converted into a statement that a parcel is legally landlocked.
Generated from our jurisdiction and data-source configuration, last verified 2026-09-04. Limited and Beta layers are labelled as such rather than presented as nationwide coverage.
| Layer | Status | Coverage |
|---|---|---|
| Auction data & calendars | Active | All 25 active counties in AZ, CA, FL, GA, TX. |
| Property risk scoring (Deal Score) | Active | All 25 active counties. Score components populate as each risk layer resolves. |
| FEMA flood zone screening | Active | All 25 active counties — FEMA's National Flood Hazard Layer is national. |
| Natural hazard composite (FEMA NRI) | Active | All 25 active counties — FEMA National Risk Index is national by census tract. |
| Wetlands screening | Active | All active counties via the USFWS National Wetlands Inventory. Florida adds the FDEP statewide FLUCCS overlay for parcel-level overlap. |
| Environmental due diligence (contamination sites) | Active | All active counties — Superfund, brownfield, petroleum, and storage-tank proximity via each state's environmental agency plus EPA national layers (FDEP, GA EPD, TCEQ, ADEQ, CalEPA/DTSC). |
| Access Risk Screening (Beta) | Beta | All active counties. Flags properties with incomplete or suspicious access indicators for additional review. Current screening does not establish legal ingress/egress rights; insufficient evidence is reported as UNKNOWN / NEEDS REVIEW, never as "landlocked". |
| Code enforcement & municipal liens | Limited coverage | Confirmed in Texas metros (Dallas, Harris, Tarrant, Bexar, Travis, Collin) and Florida metros (Miami-Dade, Broward, Hillsborough, Orange). Arizona, California, and Georgia city portals are connected but still verifying. |
| Permit history & open permits | Limited coverage | Confirmed in Texas (Harris, Tarrant, Dallas, Bexar, Travis, Collin). Accela, Tyler EnerGov, ArcGIS, and Socrata connectors are live for FL, AZ, CA, and GA cities and are backfilling. |
| Recorder liens — HOA, UCC, judgments | Limited coverage | HOA lien detection confirmed in Dallas, TX. Recorder/clerk pipelines are live for Harris, Tarrant, and Collin (TX) and Broward and Hillsborough (FL); statewide UCC coverage in Florida. Other counties are in build. |
| Redemption tracking & statutory expiry | Active | All 5 active states — statutes modeled for AZ, CA, FL, GA, TX. |
| Auction countdown alerts (30 / 7 / 1 day) | Active | All active counties — alerting is jurisdiction-independent. |
| Bulk assessor (CAMA) baselines | Limited coverage | Florida statewide via the DOR NAL roll; Collin and Dallas (TX); Maricopa and Pima (AZ). Georgia and California rely on parcel-level assessor enrichment instead. |
| County inventory | Active | 25 active counties across 5 states (AZ, CA, FL, GA, TX). |
| Direct-from-county sourcing | Active | All active counties — every field of record traces to a county office source. |
| CRM export (HubSpot, Salesforce) | Active | Available on qualifying plans in every active county — not geography-dependent. |
| Full title search / title insurance | Unavailable | Not offered. LienScout Pro surfaces recorded-lien and risk signals; it is not a substitute for a title search or title commitment. |
Tax-sale underwriting is the process of deciding whether to commit capital to a tax lien or tax deed and, if so, at what maximum price. It moves from verifying the parcel, to verifying the jurisdiction's rules, to identifying risks, estimating value, modeling the exit, totaling all-in cost, applying a required return, and finally calculating a maximum bid. It is distinct from screening, which only decides which parcels deserve attention.
Start from the realistically expected value of the property, then subtract rehabilitation cost, obligations that survive the sale, holding, closing, and selling costs, and the profit or return you require for the risk. What remains is the highest acquisition price that still satisfies your assumptions. If a material input is unknown, the correct output is a review flag rather than a precise number.
No more than your modeled maximum bid. A common mistake is anchoring to the county's minimum bid or to a rule of thumb such as a fixed percentage of assessed value. Neither reflects rehabilitation cost, surviving obligations, carrying and selling costs, or the return you require, so neither produces a defensible ceiling.
The bid itself, known obligations that survive the sale, rehabilitation, carrying costs across the expected hold or redemption period, legal and title costs including any quiet-title action, and transaction and selling costs where the exit is a resale. Which of these apply depends on whether you are buying a lien, a deed, or a redeemable deed.
A tax lien is primarily a yield instrument: the base case is redemption at a statutory rate or premium, and the property matters mainly as collateral if redemption never happens. A tax deed is a property acquisition: condition, marketability, and resale cost drive the outcome from day one. Redeemable deeds sit in between, and their statutory redemption premium is a flat figure, not an annualized interest rate.
Minimum bid is what the county needs to recover — typically delinquent taxes, interest, and fees. Maximum bid is what the deal can bear given your value estimate, costs, exit, and required return. They are unrelated numbers, and a low minimum bid says nothing about whether a parcel is worth buying.
Start a 14-day trial and run this process against live inventory in AZ, CA, FL, GA, TX.