Build the record with us.
Better data makes better values. We're looking for partners on both sides of it.
Parclines values the exact car against real evidence — and that depends entirely on data: realized sales, registries, build records, and market signals, gathered the right way. We partner with the people and organizations who hold that data, and with those who want to put our valuation intelligence to work inside their own tools.
Every well-sourced dataset makes these sharper and the coverage wider.
The data is the moat — so we grow it with partners, not guesses.
Parclines values the exact car, not a model-line average, and positions every value against real, recorded sales. That precision is only as good as the evidence behind it — and the collector-car world's best data is scattered across auction houses, registries, clubs, specialists, and owners. We'd rather bring it together — properly, with permission — than fill the gaps with assumptions.
The car community should be an open data exchange for the good of the whole market. It isn't yet. We're trying to change that.
Bring data in — or put our data to work.
Bring data in
If you hold data about collector-car sales, builds, or history — auction houses, registries and marque clubs, appraisers, dealers, insurers, or specialist platforms — we'd like to talk. We ingest it, process it internally, de-identify whatever needs it, and position it as evidence behind a value. It is never resold as raw data, and forensic markers never set a price. You keep your terms; contributors get credit.
Put our data to work
If you want to use Parclines valuation intelligence inside your own product — insurers, lenders, marketplaces, appraisal firms, or platforms — we license our valuations and market-data output for your external processing. You get rigor and a defensible method behind every number, with its range, confidence, and as-of date. We keep the engine and the underlying data; you get evidence you can stand behind.
Results and records — not asking prices.
Realized sales
Hammer prices and closed private sales — the number a car actually changed hands for, not an asking price or an unmet high bid.
Registry & club records
Marque registries, club rosters, and authentication records — production data, build sheets, option codes, and chassis histories.
Build & restoration documentation
Owner-opt-in receipts and build files — the work, the parts, and the provenance that separate two cars wearing the same badge.
De-identified transaction records
Price-and-spec records with the identity stripped — a clean signal of what real cars actually sell for, shared under terms that protect everyone involved.
Market & condition signals
Inventory, listing, and condition data from dealers and platforms — breadth that tells us where a segment is moving before the auctions do.
How any partnership runs.
The same discipline that governs every value on the site governs how we handle partner data. Nothing here is negotiable.
Partnerships & sponsorships.
Data isn't the only way to work together. We're open to partnerships and sponsorships that fit the collector-car world honestly — car clubs and shows, event and media collaborations, builders and registries, museums and marques, and platforms that share our respect for the culture. If you're putting on something worth seeing, or building something the community should know about, we'd like to hear about it.
Tell us what you've got — or what you want to build.
Whether you're sitting on data the market should benefit from, or you want Parclines intelligence inside your own tools, start with an email. We read every inquiry.