Category Archives: [CSGP] CoStar Group


[CSGP] CoStar

One way to make money is to start with transactions and monetize the data exhaust. Intercontinental Exchange disseminates data from the trading activity on its exchanges. Amazon’s ad business relies on first party data spawned by e-commerce. CoStar instead made the less common reverse commute, brute force curating commercial real estate data and then building […]

[CSGP – CoStar Group; REIS – Reis Inc.] Tale of Two Data Providers

Before CoStar came onto the scene in 1987, getting clean and current data on rental rates, vacancies, absorption, and precedent comps needed to transact in commercial real estate was a vexing, ad hoc process.  In the early/mid-90s, juniors staffed across various financial institutions devoted significant chunks of their workweeks collecting and scrubbing this information.  Or […]

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