A cover assembly for enclosing a utility unit having a housing forming a chamber and having an open bottom. The chamber is of a size to accommodate the utility unit. An articulated connecting structure having two hinges secures the housing to a support, as a base or the ground. The articulated connecting structure permits the housing to be moved from a closed position to an open position to provide access to the utility unit. The housing rests on an annular base supported on the ground. A releasable lock can be provided to hold the housing in a closed position in engagement with the base.
