Public records, verified
Everything is compiled from public county and state property records — the parcel and assessment data governments publish for public inspection. Aggregated, cleaned, and checked; nothing private, nothing scraped.
A lead line is the weighted rope sailors drop to measure the depth beneath them. Leadline Data does the same for a market: we compile precise, verified property and market records — the public parcel and assessment data counties publish — into things you can use the same day. Mail-ready owner lists, a parcel-intelligence API, and datasets built to your spec.
Productized data, delivered digitally. Every product is built from verified public records and quality-checked before it reaches you — no scraped junk, no invented numbers.
Every waterfront property owner in a county or lake area — owner name, verified mailing address, parcel location, and assessed value — cleaned, deduplicated, and USPS-ready for direct mail. The flagship, built for dock builders, marine contractors, and boat-lift installers.
Live · ships in ~1 business day 02An MCP server and API over a 620k+ waterfront-parcel database across VA, NC, and FL — owner lookups, bounding-box searches, county market stats, and data-freshness checks. Works with Claude and any MCP client.
Early access · request a key 03Need a market we don't list, a different property type, or fields cut to your workflow? We build bespoke, verified datasets to order — the same public-records rigor as our lists, scoped to exactly what you're prospecting or modeling.
Built to order · request a quoteEverything is compiled from public county and state property records — the parcel and assessment data governments publish for public inspection. Aggregated, cleaned, and checked; nothing private, nothing scraped.
Every count and price is derived from the data itself, never estimated to fill a page. If a figure isn't verified, it isn't printed.
You get a file you can use — a CSV, a dataset, an API response — not another portal to learn. Mail it, query it, act on it the same day.
Leadline Data is a data venture owned and operated by Justin George in Kilmarnock, Virginia, on Virginia's Northern Neck. We treat property data the way a surveyor treats a boundary line: measured, verified, and documented — so the people who buy it can act with confidence, whether they're mailing a shoreline, building a tool, or scoping a market.
Questions about a list, an API key, or a custom pull — email us and you'll hear back within one business day.
Kilmarnock, Virginia · United States