Numbers to know: Office sales reach new heights, prices at 15 Madison Square North skyrocket … and more

50 Central Park West penthouse
50 Central Park West penthouse

“Numbers to know” is a weekly web feature that catalogues the most notable, quirky and surprising real estate statistics. Office sales reach an all-time high, 15 Madison Square North’s prices increased drastically this year, and Queens apartments are selling like hotcakes.

$2.7 million
Sale price of the most expensive townhouse sold in Harlem in the third quarter of the year at 363 West 120th Street [Harlem Lofts]

5,252
Size in square feet of the apartment with the biggest price tag that went into contract last week — a four-bedroom at 56 Leonard listed for $29.5 million [Olshan Luxury Market Report]

$1,734
Average price per square foot of closed sales at 15 Madison Square North condos in the past year — a 25.3 percent price increase over closed sales six months ago [CityRealty]

$1,008
Median price per square foot of a new development condo in Carroll Gardens in the third quarter of 2013 — the highest in Brooklyn [MNS]

Sign Up for the undefined Newsletter

$990
Average sale price per square foot of Manhattan Class A office buildings this year to date — the highest all-time mark [Colliers International]

95
Average days a Manhattan apartment was on the market in the third quarter in 2013, a 27.8 percent year-over-year decrease [StreetEasy]

70
Percentage of Chinese real estate buyers that pay all-cash for purchases in New York City [Juwai]

45
Windows in activist and philanthropist Jon Stryker’s 50 Central Park West penthouse, which was listed this past week for $48 million by John Burger of Brown Harris Stevens [StreetEasy]

11
Percentage of first-time homebuyers nationwide that are single males [DoorSteps]

5.7
Months it took the average Queens home to sell in the third quarter of 2013, a stunning 47.2 percent year-over-year decrease [Miller Samuel]