# NEW YORK | 509 Madison Avenue | 30 FLOORS

**URL:** <https://forum.newyorkyimby.com/t/new-york-509-madison-avenue-30-floors/24865>\
**Category:** New York\
**Created:** [August 24, 2025, 9:11pm UTC](https://forum.newyorkyimby.com/t/new-york-509-madison-avenue-30-floors/24865 "2025-08-24T21:11:19Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Mackensen](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.newyorkyimby.com/mackensen/32/138218_2.png) [@Mackensen](https://forum.newyorkyimby.com/u/Mackensen)\
**Post date:** [August 24, 2025, 9:11pm UTC](https://forum.newyorkyimby.com/t/new-york-509-madison-avenue-30-floors/24865/1 "2025-08-24T21:11:19Z")

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[https://www.crainsnewyork.com/real-estate/kensico-properties-proposes-office-hotel-conversion-madison-avenue-midtown-manhattan](https://www.crainsnewyork.com/real-estate/kensico-properties-proposes-office-hotel-conversion-madison-avenue-midtown-manhattan)

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**Author:** ![Mackensen](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.newyorkyimby.com/mackensen/32/138218_2.png) [@Mackensen](https://forum.newyorkyimby.com/u/Mackensen)\
**Post date:** [August 25, 2025, 8:32pm UTC](https://forum.newyorkyimby.com/t/new-york-509-madison-avenue-30-floors/24865/2 "2025-08-25T20:32:36Z")

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> **[Kensico Properties Eyes Conversion of 509 Madison Avenue Into Hotel](https://commercialobserver.com/2025/08/kensico-properties-conversion-509-madison-avenue-hotel/)**
>
> Development company Kensico Properties has filed plans to convert the office building at 509 Madison Avenue into a 30-story hotel.

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**Author:** ![Waymond\_Womano](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.newyorkyimby.com/waymond_womano/32/7078_2.png) [@Waymond\_Womano](https://forum.newyorkyimby.com/u/Waymond_Womano)\
**Post date:** [August 25, 2025, 9:44pm UTC](https://forum.newyorkyimby.com/t/new-york-509-madison-avenue-30-floors/24865/3 "2025-08-25T21:44:58Z")

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Kensico?

Damn!

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**Author:** ![Mackensen](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.newyorkyimby.com/mackensen/32/138218_2.png) [@Mackensen](https://forum.newyorkyimby.com/u/Mackensen)\
**Post date:** [December 16, 2025, 11:32pm UTC](https://forum.newyorkyimby.com/t/new-york-509-madison-avenue-30-floors/24865/4 "2025-12-16T23:32:01Z")

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![176011742.wz6c3d9y.d2](https://us1.discourse-cdn.com/flex019/uploads/yimby/original/3X/2/4/244968d95a775afaed5428ba0b6f239d3f3ae541.jpeg)  
[NYguy](https://skyscraperpage.com/forum/showpost.php?p=10526306&postcount=11)

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**Author:** ![YIMHudson](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.newyorkyimby.com/yimhudson/32/2304_2.png) [@YIMHudson](https://forum.newyorkyimby.com/u/YIMHudson)\
**Post date:** [December 17, 2025, 2:40am UTC](https://forum.newyorkyimby.com/t/new-york-509-madison-avenue-30-floors/24865/5 "2025-12-17T02:40:27Z")

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welcome to the 1950s and early 60s. Old art deco wedding cake? Throw some glass on it and make it taller.