A major new office tower is proposed for Downtown Denver: 1144 15th Street.

To be developed by Hines, 1144 15th will provide 640,000 square feet of office space in a 40-story glass tower rising up from 15th Street between Arapahoe and Lawrence Streets, sharing the block with the Four Seasons. Here’s a Google Earth aerial with the site outlined:

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Here are a few renderings from the project’s website. Pickard Chilton is the project architect.

View looking west from a few blocks to the east:

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Skyline panorama also looking west:

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Nighttime view looking east from Auraria Parkway:

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Wide skyline panorama looking east:

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According to the Denver Business Journal, Hines is planning to build the tower as a 100% speculative project based on the strength of the Downtown market. Construction is scheduled to begin May 2015 with completion in mid-2017.

This isn’t the first time Hines has proposed this project. Twice since the early 2000s, Hines had marketed a tower at this location, but with a pre-leasing requirement that never materialized. From our DenverInfill archives, here is an image of the proposed tower (then known as 1100 15th) from 2001:

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What an exciting project! We will keep you posted as more details about the project become available over the coming months.