Yes we received a lot of water back in November. The Abbotsford / Sumas area was hit hard with the floods.
Back in the 80s I was involved with a project named "Canoe Pass Village" in Ladner which was the first floating community where you owned boat moorage.
For our Island project we I build a floating concrete dock. It measures 40ft x 14ft x 3.5ft.
The foam is encased in concrete with epoxy coated rebar. The dock has 18" freeboard /out of the water.
Same system could be used for a larger footprint for a house.
The connections for serviced could be overcome no issues, sewers a little bit more involved but doable.
Anchors could be lock blocks with chains buried at the corners of the building. Leave enough slack on the chains to allow height of building to go up and down.
We have a two daily tide change up to 16ft with our dock, so no issue.
Was talking to one of my West Vancouver building official who had to go to Abbotsford to help asses the condition of buildings for the city of Abbotsford as the don't have the manpower for such an event.
This area is a lake that was diked and drained over 100 years ago. Not the first time that mother nature reclaimed the lake.
Build on stilts/piles above the highest water level when new buildings are build. Requires building code change.
But after the floods a lot of discussion has been is the this preventable. Yes , but the inaction of our governments over the last 30 years has led to this.
Government reports on the dikes and the systems in place dated 2015 stated that 91% of the dykes in BC were inadequate.
2021 proved the systems failed.........