Basement parking is usually the largest risk, and a barrier that raises itself suits it best. Choose the automatic barrier where the building has power and a control point, or the passive barrier where you want no electrical system involved.
For lobbies, an aluminum set gives a made-to-measure closure that building staff or a resident volunteer can place. Residents of ground-floor units can keep an Oxford barrier for their own door.
Send the ramp and door widths, photos, and how deep water has reached in past events. Tell us whether the building has a manager or caretaker on site.