The Houston Fire Department responded within six minutes of receiving the call to the 7100 block of Buffalo Speedway near Maroneal.
Two people were pulled out of the 10-foot trench between two apartment buildings at the Camden Vanderbilt at 3:13 p.m. HFD said one person was taken to the hospital in unknown condition.
A resident said there has been construction on the property for about a month and orange fencing around the area.
About 41 members of HFD responded to the call, and a member of the Occupational Safety and Health Administration (OSHA) arrived on the scene at about 5 p.m.
It is unclear if the individuals were working when the incident occurred.
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