Commercial real estate

Every Manhattan office condo, from public record.

Registry totals: 639 buildings, 4,507 units, 38,326 recorded documents, 1972 to 2026, from ACRIS, the Digital Tax Map and the DOF assessment roll

A Manhattan broker can now ask who owns 110 East 40th, what the units there last traded for, and who has been buying this year, and get the answer straight from the public record. We built it for brokers who specialize in Manhattan office condominiums. Behind it sits the whole segment: 639 buildings, 4,507 units, 38,326 recorded documents reaching back to 1972.

All of that has always been public. It is spread across three separate New York City systems that were never built to be read together, which is why the market either pays a subscription for it or rebuilds it by hand every time somebody asks. We assembled it once, joined it, and made it answerable in ordinary English.

It installs as a single Claude Desktop extension file (.mcpb). The records travel inside it, so there is no database to run, no server to host, and nothing to configure. The broker opens Claude and starts asking.

What a broker actually asks it.

The registry is built around the two moments that matter: finding the call, and being ready for it.

Who should I call?

Owners come back ranked by the things that precede a sale: how long they have held, what they paid, what else is in the portfolio. The call list is ordered before anyone opens a spreadsheet.

Who is actually buying?

Every recorded purchase is in here, so the buyer side is as visible as the seller side. When a unit comes up, the shortlist of people who have bought others like it already exists.

Owners you can reach.

A name is not much use on its own. The registry carries the part that makes it actionable.

3,321 mailable owners

Nearly three quarters of the registry resolves to an address confirmed against the city assessment roll, rather than assumed from the deed alone.

478 held in a real name

Most of the market sits behind an LLC. These units are owned in a person’s or an institution’s own name, which is the shortest path from a building to a conversation.

Your market keeps its records in public too.

Every city publishes a different set of facts, and almost nobody reads them together. We find what yours holds and build the thing that answers questions from it.

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