Here is a short timeline of the facility under IBM and TechCity.

IBM built the 257 acre site over the late 50s, 60s, 70s, and 80s. IBM built, tested, loaded software, and burned in mainframes before delivery to customers worldwide during those years. Up to $1 billion in computers underwent mission critical testing at a time. As a result, the facility was IBM's highest rated for power reliability. IBM scaled back and closed the majority of the facility in the early 1990's as part of a number of large scale costing cutting measures. These difficult measures helped them turn the company around later in the 1990s.

• 1998 - Alan Ginsberg acquires the site in February 1998 from IBM. Alan renames the site TechCity.
• 1998 - Fleet Bank signs a lease with TechCity for an entire building, over 400,000 square feet.
• 1998 - IBM signs a lease with TechCity for a 200,000 square foot building.
• 1998 - Hunter Panel signs a lease with TechCity for 168,000 square feet.
• 2000 - Planar Semiconductor signs a lease with TechCity, Governor Pataki welcomes them.
• 2001 - Firm Support signs a lease with TechCity.
• 2001 - GolfLink signs a lease with TechCity.
• 2001 - CSIG signs a lease with TechCity.
• 2001 - TechCity announces an agreement with Hudson Valley DataNet to bring Fiber to the Campus.
• 2002 - First Annual TechCity Fall Golf Classic is held in New Paltz.
• 2003 - Image Technology Labs, Inc. signs a lease.
• 2003 - The new TechCityNY.com Website by Imagine.com is launched.