Press & media coverage.

A proprietary index of Manhattan apartment pricing — median condo price per square foot and co-op price per room, Manhattan-wide, by neighborhood, and along the named Park and avenue corridors — computed from 250,000+ index-eligible sales screened out of 330,000+ recorded Manhattan transactions. Series run from 2004; small samples are suppressed rather than smoothed. Latest release: July 2026.

Exact figures, latest release: 253,455 index-eligible sales drawn from 334,376 recorded residential transactions across 13,239 Manhattan buildings; 2,213 of those buildings carry dedicated public research profiles.

Suggested citation: “The Roebling Index, The Roebling Team at Compass” with a link to theroeblingteam.com/roebling-index. Custom cuts of the data are available on request.

An evidence-first estimate of a Manhattan apartment’s value, built from the subject building’s own comparable record — same-line and same-bedroom sales first, the neighborhood only when necessary, and the unit’s own prior sale as an anchor where one exists. The methodology was backtested against more than 220,000 historical Manhattan sales, with every estimate computed only from records dated before the sale it predicts; rules were adopted only when they improved out-of-sample accuracy, and the methodology file logs the rejected rules alongside the adopted ones.

On its largest validated segments the median error runs roughly 10–11%, shown to users as explicit ranges rather than false precision. About 86% of validated historical cases receive an on-screen estimate; the rest — townhouses, penthouses, thin records, $4M+ co-ops — route to a personally reviewed analysis instead of an automated number.