Vehicle body rear portion structure

A vehicle body rear portion structure, comprising:

• a vehicle body floor having a tire storage area that is hollowed downward in a recess shape;
• and
• a fuel tank that is supported by a lower surface of the vehicle body floor on a forward side of the tire storage area,
• wherein a stiffener that extends along a vehicle body forward/rearward direction and reinforces an upper region of the fuel tank of the vehicle body floor is attached to the vehicle body floor at a forward position of the tire storage area,
• wherein a cross member that extends along a vehicle width direction is joined to an upper surface of the vehicle body floor at a forward position of the tire storage area,
• wherein the stiffener is joined to a lower surface of the vehicle body floor at a position that intersects the cross member,
• wherein a bulkhead member that reinforces, from an inside, a closed cross-section along the vehicle width direction formed of the vehicle body floor and the cross member is attached to the closed cross-section at a position that intersects the stiffener,
• wherein an outer end in the vehicle width direction of the cross member is joined to a reinforcement member that extends upward along a rear wheel house, and
• wherein an anchor bracket that supports a seat belt anchor is attached to the cross member at a vehicle body forward side of a position that intersects the stiffener.