Ìt looks very nice.
I'm not sure if it would stand up to a "worst in recorded history" tsunami. I think the concrete pillars would be damaged from a boat hitting the house or something.
I basically don't think there is any way to defeat weather unless you live in a bunker.
I'm probably being over negative because I don't like to taunt nature.

The downstairs area with its rollup windows looks like a converted garage. If I was designing a house for these weather conditions. I would use the ground floor only as a garage.backspace, for a car and a boat. Any furniture get washed away in a severe storm.
There is no reason not to have a proper staircase. Who wants to climb up the ladder, every time they want to go upstairs?
There is such a large frontal area, which in the event of a tsunami would act like a sail and the whole house would get washed away. I would certainly make the sea-facing wall pointed like the bow of a ship. Hopefully the windows would be made of polycarbonate.
No doubt this house is very expensive, and to my mind not fit for purpose. Caveat emptor!

The ladder to the bedroom with no bath makes this otherwise excellent design impractical. I won't question the makers claim to storm worthiness but I believe future storms will be much more energetic than the past.

Small house. And yea, the ladder would be annoying. I would think a spiral staircase might be better suited, even though it'd have a slightly larger footprint.
In reality, this house is a modern version of a house built on stilts like you'd find down in the Keys.
I think the house would quell most storm surges, given it's concrete wall oceanside that would block the brunt of the impact and you'd have to remember to open the garage doors to let the water flow through.
The wind from a hurricane would be an interesting factor, though. I'm guessing the "wedge" built for the oceanside wall on the main living area is supposed to deflect some of that impact?
Not sure how well it'd go against a tsunami though, given the relatively recent images from Japan.

Totally agree with windykites1. Everything seaward should be ship's prow shape, including the pillars. Vertical posts should be structural steel pilings at every corner of the bldg, with diagonal bracing. Roll-up steel doors are mandatory. I'd make the "flood room" taller, as 5' headroom is pretty worthless, even if used for storage. I'd also have a seaward deck incorporating more tall steel pilings that would serve to block or divert incoming heavy debris.
Polycarbonate windows sound good but are visually fragile, i.e. scratch easily unless protected with replaceable ? film.
Another design would be a Noah's Ark approach - a v. sturdy ferro-cement hull made to float in high water, moored with cables for normal use.
Bucky Fuller talks about design for rare events in "No More Second-Hand God".

Nice house but not so nice for a storm shelter. Low level flooding proof yes, tsunami or hurricane proof no. You can see in the drawings where normal sea level is and also see the 2nd floor is only about 10-12 ft above high tide. Not so tsunami or hurricane proof if all it can handle is a 10-12 ft tidal surge. Nor does the 2nd floor appear to be built with materials that are reinforced and tied to the foundation. House looks nice and elegant but I wouldn't stay in it during any kind of significant storm surge. Good luck with that.

I'm also skeptical of this design standing up to tsunami forces, in fact, I giggle thinking about it because of the immense speed and weight of tsunami force. The claim is really not to be believed.

Tsunami proof sounds definitely an overstatement. If the architect studied the aftermath of the massive Tohoku earthquake, they might think twice to call it tsunami proof.
-A few meters thick and 5-6m (15-18ft) high concrete wave breakers were broken completely at some places. The force hitting the concrete is literally tons, I understand. Many houses were swept away from the concrete foundation on up. Tsunamis can easily cave underneath.
-Washington State shows it was hit by a massive tsunami before humans settled there, and if I remember right, the height of the tsunami would have easily swallowed this house.
-There were many earthquake proof houses in Tohoku that stood gutted after the tsunami. Since glasses will be broken regardless of what they are made of, if the second floor is filled up with water, you have no chance of survival.

As a fellow washington coaster, I really like this house. I would want stairs to the loft, and a bathroom up there, too, make it a master loft. I'd also want either a roof deck, or a second floor deck for watching the ocean (camano doesn't have an ocean view, it has sound view). As far as height for tsunami protection, camano island is buried behind other islands, and already sheltered. I'm on the long beach peninsula, the only shelter I have from a tsunami is outrunning it.

The opening photo of the article makes it quite clear that the house in question IS NOT ready for nature's worst. Come on!
First, notice the clear material on the bottom floor.
Unless that clear material (possibly glass) is not ultra strong and ultra reinforced it certainly is NOT going to stand up to a wall of water moving at 50 miles an hour.
Get real. Write better, more honest, articles. Don't you care to have pride in your work? Please stop telling the masses falsehoods. Thanks, so much.