About AuctionSift
Tax auction intelligence for serious real estate investors. Discover, analyze, and act on auction opportunities with data, not guesswork.
What we do
Tax auction investing requires hours of manual research. For a typical county auction with 900+ properties, investors spend 40+ hours cross-referencing county assessor records, Zillow listings, FEMA flood maps, and Google Earth — before they even start evaluating.
AuctionSift automates that research. We pull 64 data points per property from county records, valuation APIs, and hazard databases. Every property gets scored A–D across six dimensions. Flood zones, fire risk, title issues, and occupancy indicators are flagged automatically.
The result: instead of spending a week on a spreadsheet, you spend an evening with a filtered, scored, enriched dataset that shows you exactly which properties are worth investigating.
Built by an investor who got tired of the manual process. This isn't a course, a membership, or a guru product. It's a tool that does the research part of tax auction investing.
Data sources
Each data source is queried independently and cross-referenced. No single source is trusted in isolation.
Owner name, legal description, assessed value, lot size, and parcel data directly from county databases.
Flood zone classifications (A, AE, X, etc.) pulled from the official FEMA NFHL dataset for every parcel.
Automated valuations and comparable sales from third-party AVM providers, cross-referenced for accuracy.
Tax bill line items, delinquency history, and special assessments including Mello-Roos and CFD charges.
Permit history for unpermitted work, major renovations, and open permits that could affect title.
Parcel boundaries, current condition, street-level context, and historical imagery for change detection.
How scoring works
Every property receives a composite score from 0 to 100 across six sub-scores, mapped to letter tiers.
The six sub-scores are Financial, Condition, Title, Location, Regulatory, and Occupancy — each scored 0–100. Weights are adjusted by property type:
- —Improved properties (SFR, condo): heavier weight on Condition and Financial
- —Land: heavier weight on Location and Regulatory
- —Manufactured homes: heavier weight on Condition and Title
The composite score maps to four tiers: A (80–100), B (60–79), C (40–59), D (0–39).
Scoring weights, data sources, and methodology are transparent. You can see exactly how a score is calculated and decide if you agree.
Data, not advice
We enrich properties with facts — valuations, hazard zones, comparable sales. We don't tell you what to buy. You already know how to invest.
Transparent methodology
Scoring weights, data sources, and methodology are documented. You can see exactly how a score is calculated and decide if you agree.
No email gates
Auction previews are fully accessible without login. The map, score distributions, and sample data are visible before you create an account or pay anything.
Unlock what you need
Starter plans include 1 auction credit per month at $49/mo — unlock auctions as you need them, with credits that roll over. Upgrade to Pro for full state access.
Data freshness
Analysis runs when the auction list is published, typically 2–4 weeks before the sale date. We re-check for redemptions and withdrawn properties in the days leading up to the auction. After the sale, the dataset is frozen as a historical snapshot.
Current coverage
We currently cover tax deed and tax lien auctions in 4 states: Florida, California, Texas, and Georgia. Coverage expands weekly as we add new counties and states.
Each auction is enriched 2–4 weeks before the auction date, giving you time to research before the bidding starts.
We're adding new counties and states weekly. If your target county isn't listed, sign up for notifications and we'll email you when it's available.