We get that on a regular basis. It’s called high tide.
What happens if it's high tide on top of high tide?
So do we. And if you built your house between low and high tide and the water rose meters per second (like in the historic Hilo tsunami), you'd have a problem.
What, you live on the Bay of Fundy or something, lol?
High tide takes 6 hours to peak. This will peak in minutes. And, as noted, if it’s on top of high tide, that’s well above what the shore-dwellers are prepared for.
The Indonesian “Christmas Tsunami” was about 35 feet and killed a quarter-million people. The Japanese tsunami causing the Fukushima nuclear meltdown was 10-30 ft and killed some 18,000 with vast property damage.
Your tidal change would do a lot of damage if it were all at once.