Amazon AWS IAD – Mason Campus
7505-7610 Mason King Ct, Manassas, VA, 20109, US
Amazon has held 7505 Mason King Court since 1 August 2003, which makes this Manassas parcel one of the oldest data-centre holdings in the company's Virginia estate. Prince William writes the building's own name into the tax mailing line — real estate manager, AWS-IAD7 — and classes the 7.656-acre lot under use code 191, data centre and technology services. Amazon Data Services Inc is the owner of record on GPIN 7597-72-1867, acquired under deed instrument 200308010140858 and reconveyed on 26 March 2026. The street is short and mixed: five addresses in all, with a GI Partners entity holding the data centre next door at 7510 and Iron Mountain at 7500.
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Frequently asked questions
Which AWS building does the county record here?
IAD7. Prince William's tax mailing line reads 'ATT: REAL ESTATE MANAGER AWS-IAD7', addressed to 410 Terry Avenue in Seattle, which puts Amazon's own building designation on the public record.
How long has Amazon owned the parcel?
Since 1 August 2003, under deed instrument 200308010140858. A further conveyance was recorded on 26 March 2026, and the county last edited the parcel record in October 2019.
What else sits on Mason King Court?
Five addresses in total: 7455, 7500, 7505, 7510 and 8011. The neighbouring data centre at 7510 belongs to GI TC 7510 Mason King Ct LLC and 7500 to Iron Mountain Information Management LLC.
How large is the holding?
7.656 acres by deed acreage. Prince William's public assessment layer returns zero above-grade square footage for the building, as it does for every data-centre parcel in the county.