Same-day bookings for transient houses are possible in many cases, particularly during off-peak periods when availability is higher, but they are not guaranteed and depend entirely on whether the host can accommodate an immediate check-in. It is best to contact the host directly through Transienthome.com as early in the day as possible to confirm availability, coordinate check-in logistics, and complete payment before arriving. For important trips, same-day bookings carry more risk, so advance reservations are always the safer and more reliable option.