The 10 largest office blocks available for sublease in Houston are all on the market from energy companies. Of the top 10, Cushman & Wakefield is marketing the most with four, according to Commercial Gateway.

The 10 largest spaces available for sublease range from 189,285 square feet to 504,327 square feet, the latter being Four Westlake Park, which was put on the sublease market by BP last year.

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