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Avoid double bookings with a hard lock

Two families want the same week? CasaCal won't allow it, because the lock lives in the database.

Start free for 30 days
  • Refused by the database

    A hard constraint at the database level refuses two overlapping stays outright. Overlaps are technically impossible, not just unlikely.

  • Accurate to the half day

    Departure counts in the morning, arrival in the afternoon. Both fit on the same changeover day without ever counting as an overlap.

  • The calendar shows what's free

    Before anyone logs a stay, they see the current state. Nobody has to check in a chat first.

  • The same rule for every booking

    The lock treats owners and members the same: whoever logs a taken half day second gets rejected.