Screen properties before you spend on deeper due diligence.
GroundRules helps professionals decide which properties deserve more time — and which need verification before relying on public records.
How batch screening works.
Submit 5–20 addresses
Paste a batch of LA properties into the screening tool. No account required for your first screen.
GroundRules checks the public record
Source-backed facts from assessor data, GIS parcels, zoning, hazard layers, and jurisdiction records are surfaced for each address.
Properties are sorted by outcome
Clean, risky, missing-source, or verification-needed properties are distinguished so you can triage the batch quickly.
Escalate only what deserves it
Order a $149 human-reviewed packet for the addresses with contradictions, hazard flags, or jurisdiction ambiguity.
Built for professionals who screen multiple properties.
If you regularly review properties before committing time and money, batch screening is designed for your workflow.
Investor-friendly agents
Screen a short list before accepting a listing or making an offer. Quickly flag addresses with contradictions or hazard layers.
Small infill investors & flippers
Compare multiple addresses in a single pass before spending on site visits, title searches, or professional consultations.
Small builders & contractors
Qualify leads before quoting. Know which properties have unresolved source questions before committing to site visits.
Architects & designers
Identify property-level signals — zoning, overlay, parcel match — before taking on a new engagement.
Submit your first batch of 5–20 addresses and get source-backed screening results at no cost.
- ✓Up to 20 addresses per batch
- ✓Source-backed public-record check
- ✓Contradiction and hazard flags
- ✓Known / unknown / verify framing
Human-reviewed packet for a flagged property. Ordered after the batch screen identifies something worth a closer look.
- Human reviewer checks source-backed findings
- Contradictions and unknowns called out clearly
- Source links and retrieval dates included
- Available for contradictions, missing sources, hazard flags, jurisdiction ambiguity, or overlay constraints
Screen a batch before your next site visit.
Free first batch screen. No account required. LA properties.