So the condo market is saturated, you say? That brand-new apartment your pal bought last year is poised for a plunge? The numbers disagree. Each colored line you see above indicates the change between an apartment’s initial sale price and its resale price in the past month. Two facts emerge: For one thing, every apartment in our review has at least held its value, and nearly every one has seen some substantial appreciation. And second, nothing has gained value like an apartment in 15 Central Park West, the Robert A.M. Stern extravaganza just above Columbus Circle. Its resold apartments have gained an average of 92 percent in price—several of them in a matter of months. For comparison’s sake, we’ve also shown sales at the Plaza (where resellers are doing nicely, but not in the same league, with an average increase of 41 percent) and the Orion, a big tower at 42nd and Ninth. The latter may be the best indicator of the condo market at large, since it’s well appointed but not spectacular, the kind of building that has popped up all over Manhattan during the past decade.

Data provided by Streeteasy.com.

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• Archive: “Real Estate”
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